C8051F040/1/2/3/4/5/6/7
Rev. 1.5 41
P4.4 94 D I/O Port 4.4. See Port Input/Output section for complete
description.
P4.5/ALE 93 D I/O ALE Strobe for External Memory Address bus (multi-
plexed mode)
Port 4.5
See Port Input/Output section for complete description.
P4.6/RD 92 D I/O /RD Strobe for External Memory Address bus
Port 4.6
See Port Input/Output section for complete description.
P4.7/WR 91 D I/O /WR Strobe for External Memory Address bus
Port 4.7
See Port Input/Output section for complete description.
P5.0/A8 88 D I/O Bit 8 External Memory Address bus (Non-multiplexed
mo
de)
Port 5.0
See Port Input/Output section for complete description.
P5.1/A9 87 D I/O Port 5.1. See Port Input/Output section for complete
de
scription.
P5.2/A10 86 D I/O Port 5.2. See Port Input/Output section for complete
de
scription.
P5.3/A11 85 D I/O Port 5.3. See Port Input/Output section for complete
de
scription.
P5.4/A12 84 D I/O Port 5.4. See Port Input/Output section for complete
de
scription.
P5.5/A13 83 D I/O Port 5.5. See Port Input/Output section for complete
de
scription.
P5.6/A14 82 D I/O Port 5.6. See Port Input/Output section for complete
de
scription.
P5.7/A15 81 D I/O Port 5.7. See Port Input/Output section for complete
de
scription.
P6.0/A8m/A0 80 D I/O Bit 8 External Memory Address bus (Multiplexed mode)
Bit 0 External Memory Address bus (Non-multiplexed
mo
de)
Port 6.0
See Port Input/Output section for complete description.
P6.1/A9m/A1 79 D I/O Port 6.1. See Port Input/Output section for complete
de
scription.
P6.2/A10m/A2 78 D I/O Port 6.2. See Port Input/Output section for complete
de
scription.
P6.3/A11m/A3 77 D I/O Port 6.3. See Port Input/Output section for complete
de
scription.
Table 4.1. Pin Definitions (Continued)
Name
Pin Numbers
Type Description
F040/2/4/6 F041/3/5/7
