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Appendix C: Board Schematics
4-16 AT89STK-06 Demo Board User Guide
4339B–CAN–11/04
Figure 4-4. AT89STK-06 Board Schematics (2 of 4)
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
P3.2
P3.3
P3.1
P1.6
P1.4
P3.6
P3.0
P1.3
P1.0
P1.2
P3.5
P1.7
P1.1
P1.5
P3.4
P3.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P4.1
P4.0
P2.1
P2.2
P2.7
P2.0
P2.6
P2.4
P2.3
P2.5
P4.2
P4.3
P4.4
VCC
VCC
/BUZZER
TWI_scl
TWI_sda
P1.[0..7]
P3.[0..7]
/EA
XTAL2
/RST_IO
A16
CS_RAM
/PSEN
ALE
P0.[0..7]
P2.[0..7]
P4.0
VPOWER
CS_FLASH
P4.1
P4.2
P4.3
P4.4
ISP_FLASH
/INT0
/INT1
Title
Size Document Number Rev
Date: Sheet
of
<Doc> 1.0.0
CC0x_demob/Generic_board
A4
24Thursday, January 08, 2004
Title
Size Document Number Rev
Date: Sheet of
<Doc> 1.0.0
CC0x_demob/Generic_board
A4
24Thursday, January 08, 2004
Title
Size Document Number Rev
Date: Sheet of
<Doc> 1.0.0
CC0x_demob/Generic_board
A4
24Thursday, January 08, 2004
RAM
External RAM Mapping
FLASH
/ISP_F
/CS_RAM 1
110
0X
R3
4.7 K
R3
4.7 K
D2
LED PWR ORANGE
P1.5
D2
LED PWR ORANGE
P1.5
Vss
2
Vss
4
Keyb.7
6
Keyb.6
8
Keyb.5
10
Keyb.4
12
Keyb.3
14
Keyb.2
16
Keyb.1
18
Keyb.0
20
ALE
22
Vss
24
/PSEN
26
Spare8
28
Spare9
30
Spare10
32
Spare11
34
Spare12
36
/ISP_F
38
CS_FLASH
40
Vss_out
42
Vss
44
4.35_12V
46
4.35_12V
48
P4.7
1
P4.6
3
P4.5
5
P4.4
7
P4.3
9
P4.2
11
P4.1
13
P4.0
15
P2.7
17
P2.6
19
P2.5
21
P2.4
23
P2.3
25
P2.2
27
P2.1
29
P2.0
31
P0.7
33
P0.6
35
P0.5
37
P0.4
39
P0.3
41
P0.2
43
P0.1
45
P0.0
47
J2
Connector Generic Board Right
J2
Connector Generic Board Right
SW2
INT0
SW2
INT0
R4
4.7 K
R4
4.7 K
P5.7
2
P5.6
4
P5.5
6
P5.4
8
P5.3
10
P5.2
12
P5.1
14
P5.0
16
/RD
18
/WD
20
P3.5
22
P3.4
24
P3.3
26
P3.2
28
P3.1
30
P3.0
32
P1.7
34
P1.6
36
P1.5
38
P1.4
40
P1.3
42
P1.2
44
P1.1
46
P1.0
48
Vss
1
Vss
3
/Buzzer
5
Spare7
7
Spare6
9
Spare5
11
Spare4
13
Spare3
15
Spare2
17
Spare1
19
Spare0
21
Vss
23
Xtal2
25
Vss
27
CS_RAM
29
A16
31
/BP1
33
/EA
35
/RST
37
/TWI_IT
39
TWI_scl
41
TWI_sda
43
Vss
45
Vcc_CPU
47
J1
Connector Generic Board Left
J1
Connector Generic Board Left
R7
1.2 K
R7
1.2 K
R6
10 K
R6
10 K
SW3
INT1
SW3
INT1
12
JP2 MUTEJP2 MUTE
R5
10 K
R5
10 K