AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 14

• Manufacturer Part Number: AT89C5122
• Description: MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
• Manufacturer: ATMEL [ATMEL Corporation]

Table 2. Pin Description (Continued)
14
Port
P2.6
P2.7
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P5.0
P5.1
P5.2
P5.3
P5.4
49
46
45
48
43
41
39
44
36
26
42
40
38
37
35
33
14
13
11
10
8
AT8xC5122/23
22
24
20
19
18
21
17
13
7
-
-
-
-
-
-
-
-
-
-
-
-
62
57
56
59
54
52
50
55
47
37
53
51
49
48
46
44
23
22
20
19
17
24
25
23
22
21
20
16
-
-
-
-
-
-
-
-
-
-
-
-
-
-
49
46
45
48
43
41
39
44
36
26
42
40
38
37
35
33
14
13
11
10
8
22
24
20
19
18
21
17
13
7
-
-
-
-
-
-
-
-
-
-
-
-
Internal
Supply
Power
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
ESD
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
2KV
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Reset
Level
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MISO
MOSI
INT0
INT1
RxD
SCK
A14
A15
TxD
KB0
KB1
KB2
KB3
KB4
Alt
WR
RD
T0
T1
Config
Reset
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Port51
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Push-pull
Conf 1
KB_OUT
KB_OUT
KB_OUT
KB_OUT
KB_OUT
KB_OUT
KB_OUT
KB_OUT
KB_OUT
Conf 2
WPD
WPD
Input
MPU
Input
MPU
Input
MPU
Input
Input
Conf 3
4202D–SCR–06/05
Input
WPU
Input
WPU
Input
WPU
Input
WPU
Input
WPU
Input
WPU
Input
MPU
Input
MPU
Input
MPU
Input
WPU
Input
WPU
Input
WPU
Input
WPU
Input
WPU
LED2
LED3
LED0
LED1
LED4
LED5
LED6
Led