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7.12
Port B
7.12.1
Overview
Port B is an 8-bit input/output port that is also used for output (TP
programmable timing pattern controller (TPC), input/output (TMIO
the 8-bit timer, and CS
A reset or hardware standby transition leaves port B as an input/output port. For output of CS
CS
in modes 1 to 5, see section 6.3.4, Chip Select Signals. Pins not assigned to any of these
4
functions are available for generic input/output. Figure 7.11 shows the pin configuration of port B.
Pins in port B can drive one TTL load and a 30-pF capacitive load. They can also drive darlington
transistor pair.
212
to CS
output. See tables 7.23 and 7.24 for the selection of pin functions.
7
4
to TP
) from the
15
8
, TMO
, TMIO
, TMO
3
2
1
) by
0
to
7
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