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AT89STK-11 Starter Kit..............................................................................................
Hardware User Guide
Table of Contents
AT89STK-11 Hardware User Guide 1
7676B–8051–08/07
Section 1
Introduction ........................................................................................... 1-1
1.1 Features ....................................................................................................1-1
1.2 Supported Devices....................................................................................1-2
Section 2
Hardware Description ........................................................................... 2-4
2.1 Board Overview.........................................................................................2-4
2.2 Block Diagram...........................................................................................2-5
2.3 Power Supply ............................................................................................2-5
2.4 Reset.........................................................................................................2-6
2.5 Features ....................................................................................................2-7
2.6 Interfaces ..................................................................................................2-7
2.7 Board Settings ..........................................................................................2-9
Section 3
ISP Programming ............................................................................... 3-12
3.1 Manual ISP Mode ...................................................................................3-12
3.2 Auto ISP Mode........................................................................................3-12
3.3 FLIP Software .........................................................................................3-13
3.4 Batchisp Software ...................................................................................3-13
Section 4
Appendix A: Board Layout .................................................................. 4-14
Appendix B: Bill of Materials ............................................................... 4-15
4.1 Bill of Materials Table..............................................................................4-15
Appendix C: Board Schematics .......................................................... 4-17
Appendix D: References/Acronyms.................................................... 4-22
4.2 References..............................................................................................4-22
4.3 Acronyms ................................................................................................4-22
Section 1
Introduction
This document describes the AT89STK-11 board dedicated to the standard C51 micro-
controllers with in-system programming.
All of the microcontroller I/Os are made available in an expansion area with prototyping
facilities.
1.1 Features � Stand-alone Board
� In-System Programmable (ISP) including ‘Auto ISP’ feature
� On-board Voltage Regulator
� Microcontroler on its sockets
– PLCC44-pin package
� On-board 3V or 5V power supply circuitry
– from an external power connector
– from an external battery
� On-board RESET
� Leds : Power, ALE, RS232 Rx and Tx
� External MCU clock connector
� External PCA clock connector
� TWI, SPI and RS232 connectors
� INT0 & INT1 Push-button
� Expansion area with prototyping facilities
� Commercial Temperature Range: 0 to +70°C Operating Temperature
� Dimension: 95 mm x 120 mm
AT89STK-11 Hardware User Guide 1-1
7676B–8051–08/07
Introduction
1.2 Supported Devices
� AT89C51RE2
� AT89C51RB2
� AT89C51RC2/IC2
� AT89C51RD2/ID2/ED2
AT89STK-11 Hardware User Guide 1-2
7676B–8051–08/07
Section 2
Hardware Description
2.1 Board Overview Figure 2-1 shows the AT89STK-11 board.
Figure 2-1. AT89STK-11
This photo is not contractual and may be modified without notification by Atmel.
AT89STK-11 Hardware User Guide 2-4
7676B–8051–08/07
Hardware Description
2.2 Block Diagram Figure 2-2 shows the functional block diagram of the AT89STK-11, with the I/O usage.
Figure 2-2. Block Diagram of AT89STK-11
2.3 Power Supply The on-board power supply circuitry allows various power supply configurations. This
gives the user the capability to power the devices in the 3V and in the 5V voltage range.
2.3.1 Power Supply
Sources
The power supply source can come from two different and exclusive sources:
� either from the JACK PWR connector
� either from the 2-point sip EXT connector.
2.3.1.1 JACK PWR
Connector
The Jack power connector implemented on board is a female Jack connector with inter-
nal 2.1mm conductor. It requires a male JACK outlet with 2.1mm capability.
No specific polarization is mandatory as on-board diode rectifier gives a protection
against inadvertent polarization invertion.
When using the JACK power supply, the board is powered with a 5V voltage.
Power Supply
Full UART
External
Power
PC Host
C51P2
P3
EARSTISP
Expansion
TWI
P0
P1
SPI
INT0
Leds:PWRALE
16MHzQuartz
PLCC44
3V or 5V
INT1
Area
User LEDs User Push Buttons
2-5 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Hardware Description
Figure 2-3. Male JACK Outlet and Wires
Note: Do not mount more than one power supply source on AT89STK-11 Board.
Note: There is a diode voltage level between the negative output of the power supply and the “GND”. This could introduce some voltage gap during measurement and instrumentation.
2.3.1.2 External EXT
connector
The battery power connector implemented on board is a male two point SIP connector.
It requires an external power cable with a female 2 points connector.
When powered though this interface, polarization is mandatory as no protection is given
on board.
The EXT power supply circuitry support input supply from 2.7V up to 5.5V DC.
Figure 2-4. EXT PWR Female Connector / Cable
Note: Do not mount more than one power supply source on board.
Note: Keep SP1 closed when using the EXT input
2.4 Reset To be compatible with Atmel microcontrollers which have (or not) its on-chip RESET cir-
cuitry (c.f.microcontroller datasheet), the board provides a RESET signal witch can
come from 2 different sources:
2.4.1 Power-on RESET The on-board RC network acts as power-on RESET.
2.4.2 RESET Push Button By pressing the RESET push button on the board, a warm RESET of the microcontroller
is performed.
AT89STK-11 Hardware User Guide 2-6
7676B–8051–08/07
Hardware Description
2.5 Features This section presents the various features such as leds, buttons, etc... available on the
board.
2.5.1 Push-Buttons � RESET can be used to apply warm reset to the MCU
� ISP can be used with RESET to apply hardware conditions resulting in bootloader
start
� INT0 push-button can be used to activate INT0 input
� INT1 push-button can be used to activate INT1 input
2.5.2 User Push buttons � PB0, PB1, PB2 and PB3 are four push-buttons available for user application
They are made available on a 6 pins socket and in the expansion area so user can use
them according to the application needs.
2.5.3 Indicator LEDs � PWR led is driven by input of voltage regulator
� Rx led is connected to Rx of UART MCU (SP3 jumper can be soldered or not)
� Tx led is connected to Tx of UART MCU (SP4 jumper can be soldered or not)
� ALE led is connected to ALE of MCU
2.5.4 User LEDs � LED0, LED1, ... LED7 are height leds available for user application
They are made available on a 10 pins socket and in the expansion area so user can use
them according to its application needs.
2.5.5 Ports Port 0 and Port 2 are made available on two 10 pins sockets to ease user interconnec-
tion to the MCU.
The are also available on the expansion area.
2.5.6 Clocks An external clock can be connected to the board to control externally XTAL1 input clock
of MCU by using the XTAL1 from the expansion area.
In the same way, another external clock can be connected to control externally the PCA
clock (P1.2/ECI).
2.6 Interfaces
2.6.1 TWI The TWI connector is controlled by hardware TWI I/O of MCU (for Product including this
feature). The signals sda and scl are controlled by the TWI ports of MCU.
This TWI bus is also connected to the expansion area.
External TWI pull-ups are not provided on the AT89STK-11.
2.6.2 SPI The SPI connector is directly connected to SPI I/O of the MCU.
2.6.3 RS-232 The DB9 connector is connected to on-chip UART peripheral through a standard RS232
driver/receiver. Two leds are provided to indicate activity on Rx and Tx lines (They can
be disconnected removing solder pad SP3 and SP4).
2.6.4 OCD The On-Chip Debug interface (OCD) is provided on a 6-pin connector.
2-7 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Hardware Description
This interface enables the debug of the application through ATMEL OCD dongle for
AT89C51RE2/IE2/RD3/IE3 only.
2.6.5 Expansion Area In addition to a 16x29 pad array, two rows of pads are given on the right side of the
board to offer all the MCU signals tu user application. Any application expansion can be
built on board through this interface.
2.7 Board Settings
The C51 Demo Board has the following settings:
� Jumpers
� Solder straps
� Test points
2.7.1 Jumpers The following table provides an overview of the jumpers, the solder straps and their
default configuration.
Figure 2-5. Jumper Setting Definition
2.7.2 Solder Straps Solder straps allow to modify the board configuration for specific usage.
Table 2-1. Jumpers and Switches Overview
Reference PCB Label Function Default
Jumper J11 J11 RTS of RS232 OFF
Jumper J12 J12 DTR of RS232 OFF
Jumper J13 J13 OFF
Table 2-2. Solder Straps Overview
Reference PCB Label Function Default
Solder strap SP1 SP1 External Power Supply Isolation Soldered
Solder strap SP2 ICC Consumption measurement Soldered
Solder strap SP3 SP3 Rx Led Soldered
Solder strap SP4 SP4 Tx Led Soldered
AT89STK-11 Hardware User Guide 2-8
7676B–8051–08/07
Hardware Description
Figure 2-6. Solder Strap Definition
2.7.3 Test Points
Test points are used to check the internal power supply of the microcontroller.
Table 2-3. Table of Test Points
Reference PCB Label Function
TP1 VCC Test point for Vcc
TP2,TP3 GND Test point for GND
2-9 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Section 3
ISP Programming
The On-Chip memories and configuration bytes can be programmed using the ISP
mode of the device and Atmel's FLexible In-system Programmer Software (FLIP)
described below.
3.1 Manual ISP Mode See Section “FLIP Software”, page 11.
3.1.1 Board Configuration To use ISP mode, no specific configuration is necessary on the board. Only make sure
that the EA pin of the product is tied to Vcc (internal code execution only).
3.1.2 Operating Mode To enter in ISP mode, press both the RESET and ISP buttons simultaneously.
First release the RESET button and then the ISP button. The device enters in
ISP mode.
3.2 Auto ISP Mode It allows the host PC application (Atmel Flip software for example) to control the hard-
ware conditions from the serial lines RTS and DTR.
Thus with the Auto ISP mode, the user does not need to push the ISP and RESET
buttons.
3.2.1 Board Configuration To use Auto ISP mode, put the board in the same configuration as ISP mode and also:
� Close RTS (J11) jumper
� Close DTR (J12) jumper
AT89STK-11 Hardware User Guide 3-10
7676B–8051–08/07
ISP Programming
3.3 FLIP Software FLIP software runs on Windows® and Linux® Operating Systems. FLIP supports in-sys-
tem programming of Flash C51 devices through RS232. The latest version of FLIP
software can be downloaded from the Atmel web site, www.atmel.com.
3.4 Batchisp Software
Batchisp is an In-System Programming application which can perform the same opera-
tions as FLIP but is designed to be launched from the DOS command window.
The main purpose of batchisp is to automate ISP operations on several parts. It may
also be launched from an IDE like Keil's uVision®2 one : you can compile and link your
embedded program, generate the HEX file and download it to the target hardware with-
out leaving the Keil's IDE. This makes embedded software development and test faster.
Autoisp function is an operation which allows to enter in ISP mode without any hardware
handling.This is done thanks to DTR and RTS RS232 signals which can control on the
Board the RST and PSEN I/O of MCU.
3-11 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Section 4
Appendix A: Board Layout
Figure 4-1. Board Components View Diagram
AT89STK-11 Hardware User Guide 4-12
7676B–8051–08/07
Appendix B: Bill of Materials
4.1 Bill of Materials Table
Item Q.ty Reference Part Tech. Caracteristics Package Manufacturer
1
29
CD1,CD2,C2,CD3,C3,C4,
100n 50V-10% Ceramic CASE 0805 PHYCOMP
CD5,C5,CD6,C6,CD7,C7,C8,
C9,C10,C11,C12,C13,C16,
C17,C18,C19,C20,C21,C22,
C23,C24,C25,C26
2 1 C1 1µF 10Vmin ±10% Case A AVX
3 2 C14,C15 22pF 10Vmin ±10%EIA/IECQ
3216PHYCOMP
4 1 D1 Red Led I=10 mA Agilent®
5 11 D2,D3,D4,D5,D6,D7,D8,D9,Green Led I=10 mA Agilent
D10,D11,D12
6 1 J1 SIP2 SOCKET . Pitch 2.54mm Molex®
7 1 J2 CONNECTOR JACK PWR Int.Diam=2.1mmInt. Diam.
2.1mmCliff
®
8 1 J3 HEADER 31x2/SM
9 2 J4,J8 HEADER 3X2 BARRETTE SECABLE Pitch 2.54mm Tyco Elec. / AMP
10 3 J5,J6,J10 HEADER 5X2 BARRETTE SECABLE Pitch 2.54mm Tyco Elec. / AMP
11 1 J7 CONNECTOR SIP6 RA . . .
12 1 J9 SIP4 . . .
13 3 J11,J12,J13 JUMPER Pitch 2.54mm Tyco™ Elec. / AMP
13bis 3 JUMPER shunt Pitch 2.54mm Arwin
14 1 P1 SUB-D9 FEMALE 90° with harpoons Tyco Elec. / AMP
15 1 R1 270 1/16W-5% SMD Case 0603 Multicomp
16
14
R2,R5,R14,R15,R16,R17,
1K 0.06W, 5% Case 0603 MulticompR18,R19,R20,R21,R22,R23,
R24
17 1 R3 820 1/16W-5% SMD Case 0603 Multicomp
18 8 R4,R6,R8,R9,R10,R11,R12,10k 0.06W, 5% Case 0603 Multicomp
R13
19 4
SP1,SP2,SP3,SP4,SP5, SP6,
SP7, SP8, SP9, SP10, SP11,
SP12
SolderPad
20 8 SW1,SW2,SW3,SW4,SW5,SW6,PUSH-BUTTON SMD, rectangular See DS ITT Canon
®
SW7,SW8
AT89STK-11 Hardware User Guide 4-13
7676B–8051–08/07
Appendix B: Bill of Materials
21 3 TP1,TP2,TP3 TEST POINT Through Hole Pad Hole 1.1mm Vero
22 1 U1 DF005S TO269AA Vishay®
23 1 U2 LM317 SOT-223 National®
25 1 U6 AT8xC51_PLCC44 Socket
25bis 1 U6 AT8xC51_PLCC44
26 2 U7,U8 SIPEX-SP3232ECA Ref=SP3232ECA SSOP16 Maxim®
27 1 U9 74HC125/SO SOIC texas
28 1 Y1 CRYSTAL HC49 . .
28bis 2 Y1 CRYSTAL tulip . .
29 8R100, R101, R102, R103,
4,7K 0.06W, 5% Case 0603 MulticompR104, R105, R106, R107
Item Q.ty Reference Part Tech. Caracteristics Package Manufacturer
AT89STK-11 Hardware User Guide 4-14
7676B–8051–08/07
Appendix C: Board Schematics
AT89STK-11 Hardware User Guide 4-15
7676B–8051–08/07
Appendix C: Board Schematics
Figure 4-2. AT89STK-11 Schematics (1 of 4)
P3
.3/I
NT
1P
3.2
/IN
T0
Vcc
Vcc
Vcc
Vcc
Vcc
/EA
P3
_2
/IN
T0
/AL
E
P3
_3
/IN
T1
Default State : Closed
R2
1K
R2
1K
CD
5
10
0n
CD
5
10
0n
R3
82
0R
38
20
R8
10
KR
81
0K
Vin
Vo
ut
ADJ
U2
LM
31
7E
MP
/SO
T2
23
SO
T2
23
U2
LM
31
7E
MP
/SO
T2
23
SO
T2
23
R4
10
K
R4
10
K
1
TP
1V
cc T
PT
P1
Vcc T
P
D2
AL
E
D2
AL
E
1
TP
3T
P3
1 2
J1
SIP
2 S
OC
KE
T
Alte
rna
te P
ow
er
Su
pp
ly
J1
SIP
2 S
OC
KE
T
Alte
rna
te P
ow
er
Su
pp
ly
1
3
2
4-
+
U1
DF
00
5S
-+
U1
DF
00
5S
1
TP
2G
ND
TP
TP
2G
ND
TP
SW
3
INT
1
SW
3
INT
1S
W2
INT
0
SW
2
INT
0C
D3
10
0n
CD
3
10
0n
SP
1S
P1
R9
10
KR
91
0K
D1
Po
we
r
D1
Po
we
r
R1
27
0R
12
70
R5
1K
R5
1K
CD
1
10
0n
CD
1
10
0n
3 2 1
J2
CO
NN
EC
TO
R J
AC
K P
WR
Po
we
r S
up
ply
J2
CO
NN
EC
TO
R J
AC
K P
WR
Po
we
r S
up
ply
C1
1µ
FC
11
µF
AT89STK-11 Hardware User Guide 4-16
7676B–8051–08/07
Appendix C: Board Schematics
Figure 4-3. AT89STK-11 Schematics (2 of 4)
Vss
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
P1
.1/T
2E
X/S
SP
1.5
/CE
X2
/MIS
O
P1
.7/C
EX
4/M
OS
IP
1.6
/CE
X3
/SC
K
P0
_0
P0
_2
P0
_4
P0
_6
P0
_1
P0
_3
P0
_5
P0
_7
P2
_6
P2
_0
P2
_2
P2
_4
P2
_1
P2
_3
P2
_5
P2
_7
LED_0
LED_1
LED_2
LED_3
LED_4
LED_5
LED_6
LED_7
PB
_0
PB
_1
PB
_2
PB
_3
LE
D_
6
LE
D_
1L
ED
_3
LE
D_
5L
ED
_7
LE
D_
0L
ED
_2
LE
D_
4
PB
_2
PB
_0
PB
_1
PB
_3
TW
I_h
ard
_scl
TW
I_h
ard
_sd
a
OC
D_
Rx
OC
D_
Tx
/PS
EN
RS
T
Port P0
Port P2
LEDs
Buttons
OCD
TWI
C1
11
00
nC
11
10
0n
R1
9
1K
R1
9
1K
R1
01
0k
R1
01
0k
C5
10
0n
C5
10
0n
D6
D6
2 4 6 8 10
1 3 5 7 9
J5
HE
AD
ER
5X
2
J5
HE
AD
ER
5X
2
C6
10
0n
C6
10
0n
246
135
J4
HE
AD
ER
3X
2
J4
HE
AD
ER
3X
2
R2
0
1K
R2
0
1K
D3
D3
C2
10
0n
C2
10
0n
D7
D7
D1
0D
10
SW
7S
W7
R2
1
1K
R2
1
1K
2 4 6 8 10
1 3 5 7 9
J1
0
HE
AD
ER
5X
2
J1
0
HE
AD
ER
5X
2
D5
D5
R1
6
1K
R1
6
1K
R1
5
1K
R1
5
1K
2 4 6 8 10
1 3 5 7 9
J6
HE
AD
ER
5X
2
J6
HE
AD
ER
5X
2
R1
4
1K
R1
4
1K
C9
10
0n
C9
10
0n
R1
31
0k
R1
31
0k
SW
6S
W6
C7
10
0n
C7
10
0n
SW
5S
W5
1 2 3 4
J9
SIP
4
J9
SIP
4
C8
10
0n
C8
10
0n
C1
01
00
nC
10
10
0n
D9
D9
C4
10
0n
C4
10
0n
D8
D8
C3
10
0n
C3
10
0n
C1
21
00
nC
12
10
0n
2 4 6
1 3 5
J8
HE
AD
ER
3X
2
J8
HE
AD
ER
3X
2
R1
11
0k
R1
11
0k
R1
8
1K
R1
8
1K
R1
7
1K
R1
7
1K
SW
4S
W4
R1
21
0k
R1
21
0k
1 2 3 4 5 6
J7
SP
I M
ale
J7
SP
I M
ale
D4
D4
4-17 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Appendix C: Board Schematics
Figure 4-4. AT89STK-11 Schematics (3 of 4)
XT
AL2
XT
AL1
Vcc
Vcc_cpu
Vcc_cpu
Vcc
Vcc
Vcc
P0_0
P0_1
P0_2
P0_3
P0_4
P0_5
P0_6
P0_7
P1.0
/T2
P1.1
/T2E
X/S
SP
1.2
/EC
IP
1.3
/CE
X0
P1.4
/CE
X1
P1.6
/CE
X3/S
CK
P1.7
/CE
X4/M
OS
I
P2_0
P2_1
P2_2
P2_3
P2_4
P2_5
P2_6
P2_7
P3_0/R
xD
P3_1/T
xD
P3_2/IN
T0
P3_3/IN
T1
P3_4
P3_5
P3_6
P3_7
/ALE
/PS
EN
/EA
RS
TT
WI_
hard
_sda
TW
I_hard
_scl
P1.5
/CE
X2/M
ISO
OC
D_R
x
OC
D_T
x
XT
AL1
XT
AL2
P0_0
P0_1
P0_2
P0_3
P0_4
P0_5
P0_6
P0_7
TW
I_hard
_scl
TW
I_hard
_sda
/EA
XT
AL1
XT
AL2
/ALE
P0_0
P0_1
P0_2
P0_3
P0_4
P0_5
P0_6
P0_7
OC
D_R
xO
CD
_T
x
RS
T
P1.0
/T2
P1.1
/T2E
X/S
SP
1.2
/EC
IP
1.3
/CE
X0
P1.4
/CE
X1
P1.5
/CE
X2/M
ISO
P1.6
/CE
X3/S
CK
P1.7
/CE
X4/M
OS
I
/PS
EN
P3_0/R
xD
P3_1/T
xD
P3_2/IN
T0
P3_3/IN
T1
P3_4
P3_5
P3_6
P3_7
PB
_1
PB
_0
PB
_3
PB
_2
LE
D_6
LE
D_1
LE
D_3
LE
D_5
LE
D_7
P2_0
P2_1
P2_2
P2_3
P2_4
P2_5
P2_6
P2_7
LE
D_0
LE
D_2
LE
D_4
Expansion Connector
R105
4.7
KR
105
4.7
KR
104
4.7
KR
104
4.7
K
Y1
Y1
R103
4.7
KR
103
4.7
K
SP
6S
P6
RS
T10
XT
AL2
20
XT
AL1
21
GND22
PS
EN
32
ALE
/PR
OG
33
EA
/VP
P35
VCC44
P1.0
2
P1.1
3
P1.2
4
P1.3
5
P1.4
6
P1.5
7
P1.6
8
P1.7
9
P2.0
/A8
24
P2.1
/A9
25
P2.2
/A10
26
P2.3
/A11
27
P2.4
/A12
28
P2.5
/A13
29
P2.6
/A14
30
P2.7
/A15
31
P3.0
/RX
D11
P3.1
/TX
D13
P3.2
/IN
T0
14
P3.3
/IN
T1
15
P3.4
/T0
16
P3.5
/T1
17
P3.6
/WR
18
P3.7
/RD
19
P0.0
/AD
043
P0.1
/AD
142
P0.2
/AD
241
P0.3
/AD
340
P0.4
/AD
439
P0.5
/AD
538
P0.6
/AD
637
P0.7
/AD
736
Rx_O
CD
1
RxD
_1/S
DA
12
TxD
_1/S
CL
34
Tx_OCD23
U6
AT
8xC
51_P
LC
C44
U6
AT
8xC
51_P
LC
C44
R102
4.7
KR
102
4.7
K
SP
2S
P2
R101
4.7
KR
101
4.7
K
C13
100n
C13
100n
R100
4.7
KR
100
4.7
K
SP
12
SP
12S
P11
SP
11
CD
6
100n
CD
6
100n
CD
7
100n
CD
7
100n
C15
22pF
C15
22pF
C14
22pF
C14
22pF
2 4 6 8 10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
1 3 5 7 911
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
J3
HE
AD
ER
31x2/S
M
J3
HE
AD
ER
31x2/S
M
SP
8S
P8
R107
4.7
KR
107
4.7
K
SP
10
SP
10S
P7
SP
7
R106
4.7
KR
106
4.7
K
SP
9S
P9
SP
5S
P5
AT89STK-11 Hardware User Guide 4-18
7676B–8051–08/07
Appendix C: Board Schematics
Figure 4-5. AT89STK-11 Schematics (4 of 4)
DS
R
Vcc
RT
SR
x_P
C
CT
S
CT
SR
TS
Tx_M
CU
DT
R
Tx_P
C
Rx_M
CU
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
P3_0/R
xD
P3_1/T
xD
/PS
EN
RS
T
"grain de café"
"grain de café"
Vcc
SP
4S
P4
C26
100n
C26
100n
CD
2
100n
CD
2
100n
C16
100n
C16
100n
C23
100n
C23
100n
SW
1
RE
SE
T
SW
1
RE
SE
T
R22
1K
R22
1K
23
141
7
U9A
74H
C125/S
O_5
U9A
74H
C125/S
O_5
SP
3S
P3
C21
100n
C21
100n
12
J11 R
TS
J11 R
TS
R24
1K
R24
1K
C22
100n
C22
100n
SW
8
ISP
SW
8
ISP
R23
1K
R23
1K
C18
100n
C18
100n
C17
100n
C17
100n
C25
100n
C25
100n
56
144
7
U9B
74H
C125/S
O_5
U9B
74H
C125/S
O_5
12
J13
J13
C20
100n
C20
100n
C1+
1
C1-
3
C2+
4
C2-
5
VCC16
GND15
V+
2
V-
6
R1O
UT
12
R2O
UT
9
T1IN
11
T2IN
10
R1IN
13
R2IN
8
T1O
UT
14
T2O
UT
7
U8
SIP
EX
-SP
3232E
CA
U8
SIP
EX
-SP
3232E
CA
12
J12 D
TR
J12 D
TR
D11
Gre
en L
ed
Rx L
ED
D11
Gre
en L
ed
Rx L
ED
R6
10K
R6
10K
C24
100n
C24
100n
C1+
1
C1-
3
C2+
4
C2-
5
VCC16
GND15
V+
2
V-
6
R1O
UT
12
R2O
UT
9
T1IN
11
T2IN
10
R1IN
13
R2IN
8
T1O
UT
14
T2O
UT
7
U7
SIP
EX
-SP
3232E
CA
U7
SIP
EX
-SP
3232E
CA
C19
100n
C19
100n
594837261
P1
SU
B-D
9 F
EM
ALE
RS
232
P1
SU
B-D
9 F
EM
ALE
RS
232
D12
Gre
en L
ed
Tx L
ED
D12
Gre
en L
ed
Tx L
ED
4-19 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Appendix D: References/Acronyms
4.2 References � AT89C51RD2/ID2/ED2/RB2/RC2/IC2/RE2/IE2 and AT89C51RD3/IE3 Product
Datasheet.
4.3 Acronyms � FLIP: FLexible In-system Programming
� ISP: In-System programming
AT89STK-11 Hardware User Guide 4-20
7676B–8051–08/07
Appendix D: References/Acronyms
Document Revision
History
Changes from 7676A to 7676B
1. Section 1.2, page 1-2 : AT89C51RE3/ID3/IE2 not supported.
2. Section 2.3.1.2, page 2-5 : SP1 must be kept closed.
3. Section 3.1.1, page 3-11 : SW1 switch and EA jumper do not exist.
4. Appendix A, page 4-13 : the given board layout was wrong. Replaced by the
right one.
5. Appendix C, page 4-19 : there was an error on page 4 of the schematic.
Pin5 of U9B is now connected to Vcc instead of GND.
4-21 AT89STK-11 Hardware User Guide
7676B–8051–08/07
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