HD6475348R Datasheet, PDF (176/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

P47 (input/output)
P46 (input/output)
P45 (input/output)
Port
P44 (input/output)
4
P43 (input/output)
P42 (input/output)
P41 (input/output)
P40 (input/output)
Figure 9-10 Port 4 Pin Functions in Single-Chip Mode
9.6 Port 5
9.6.1 Overview
Port 5 is an 8-bit input/output port with the pin configuration shown in figure 9-11. In the
expanded modes that use the on-chip ROM (modes 2 and 4), the pins of port 5 function either as
general-purpose input pins or as bits A15 – A8 of the address bus, depending on the port 5 data
direction register (P5DDR).
Port 5 has built-in MOS pull-ups that can be turned on or off under program control.
Outputs from port 5 can drive one TTL load and a 90 pF capacitive load. They can also drive a
Darlington transistor pair.
Pin
Modes 1 and 3 Modes 2 and 4
Single-Chip Mode
P57 / A15 A15 (output)
P57 (input) / A15 (output) P57 (input/output)
P56 / A14 A14 (output)
P56 (input) / A14 (output) P56 (input/output)
P55 / A13 A13 (output)
P55 (input) / A13 (output) P55 (input/output)
Port
P54 / A12 A12 (output)
P54 (input) / A12 (output) P54 (input/output)
5
P53 / A11 A11 (output)
P53 (input) / A11 (output) P53 (input/output)
P52 / A10 A10 (output)
P52 (input) / A10 (output) P52 (input/output)
P51 / A9 A9 (output)
P51 (input) / A9 (output) P51 (input/output)
P50 / A8 A8 (output)
P50 (input) / A8 (output) P50 (input/output)
Figure 9-11 Pin Functions of Port 5
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