C8051F040/1/2/3/4/5/6/7
Table 4.1. Pin Definitions (Continued)
Name
Pin Numbers
Type Description
F040/2/4/6 F041/3/5/7
P1.0/AIN2.0/A8 36
29
A In ADC1 Input Channel 0 (See ADC1 Specification for com-
D I/O plete description).
Bit 8 External Memory Address bus (Non-multiplexed
mode)
Port 1.0
See Port Input/Output section for complete description.
P1.1/AIN2.1/A9 35
28
A In Port 1.1. See Port Input/Output section for complete
D I/O description.
P1.2/AIN2.2/
34
A10
27
A In Port 1.2. See Port Input/Output section for complete
D I/O description.
P1.3/AIN2.3/
33
A11
26
A In Port 1.3. See Port Input/Output section for complete
D I/O description.
P1.4/AIN2.4/
32
A12
23
A In Port 1.4. See Port Input/Output section for complete
D I/O description.
P1.5/AIN2.5/
31
A13
22
A In Port 1.5. See Port Input/Output section for complete
D I/O description.
P1.6/AIN2.6/
30
A14
21
A In Port 1.6. See Port Input/Output section for complete
D I/O description.
P1.7/AIN2.7/
29
A15
20
A In Port 1.7. See Port Input/Output section for complete
D I/O description.
P2.0/A8m/A0
46
37
D I/O Bit 8 External Memory Address bus (Multiplexed mode)
Bit 0 External Memory Address bus (Non-multiplexed
mode) Port 2.0
See Port Input/Output section for complete description.
P2.1/A9m/A1
45
36
D I/O Port 2.1. See Port Input/Output section for complete
description.
P2.2/A10m/A2
44
35
D I/O Port 2.2. See Port Input/Output section for complete
description.
P2.3/A11m/A3
43
34
D I/O Port 2.3. See Port Input/Output section for complete
description.
P2.4/A12m/A4
42
33
D I/O Port 2.4. See Port Input/Output section for complete
description.
P2.5/A13m/A5
41
32
D I/O Port 2.5. See Port Input/Output section for complete
description.
P2.6/A14m/A6
40
31
D I/O Port 2.6. See Port Input/Output section for complete
description.
P2.7/A15m/A7
39
30
D I/O Port 2.7. See Port Input/Output section for complete
description.
Rev. 1.6
39