TS87C51RC2 ATMEL Corporation, TS87C51RC2 Datasheet - Page 9

• Manufacturer Part Number: TS87C51RC2
• Description: High Performance 8-bit Microcontroller 32 Kbytes Otp
• Manufacturer: ATMEL Corporation

5.1. Pin Description for 64/68 pin Packages
Port 4 and Port 5 are 8-bit bidirectional I/O ports with internal pull-ups. Pins that have 1 written to them are pulled
high by the internal pull ups and can be used as inputs.
As inputs, pins that are externally pulled low will source current because of the internal pull-ups.
Refer to the previous pin description for other pins.
Rev. C - 06 March, 2001
VSS
VCC
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P3.0
P3.1
Table 2. 64/68 Pin Packages Configuration
PLCC68
51
17
15
14
12
11
19
21
22
23
25
27
28
29
54
55
56
58
59
61
64
65
34
39
9
6
5
3
SQUARE VQFP64
9/40
1.4
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
64
61
60
59
10
12
13
14
16
18
19
20
43
44
45
47
48
50
53
54
25
28
8
6
5
3
2
TS80C51RA2/RD2
9