HD6475328CG Datasheet, PDF (181/459 Pages) Hitachi Semiconductor – Manual Gives a Hardware Description

Pin
Mode 3
Mode 4
P63 / A19 A19 (output) P63 (input) / A19 (output)
Port
P62 / A18 A18 (output) P62 (input) / A18 (output)
6
P61 / A17 A17 (output) P61 (input) / A17 (output)
P60 / A16 A16 (output) P60 (input) / A16 (output)
Figure 9-15 Pin Functions of Port 6
9.7.2 Port 6 Registers
Register Configuration: Table 9-10 lists the registers of port 6.
Mode 1 and 2 and
Single-Chip Mode
P63 (input/output)
P62 (input/output)
P61 (input/output)
P60 (input/output)
Table 9-10 Port 6 Registers
Name
Port 6 data direction register
Port 6 data register
Abbreviation
P6DDR
P6DR
Read/Write
W
R/W
Initial Value
H'F0
H'F0
Address
H'FF89
H'FF8B
1. Port 6 Data Direction Register (P6DDR)—H'FF89
Bit
7
6
5
4
3
2
1
0
—
—
—
— P63DDR P62DDR P61DDR P60DDR
Initial value
1
1
1
1
0
0
0
0
Read/Write
—
—
—
—
W
W
W
W
P6DDR is an 8-bit register that selects the direction of each pin in port 6.
Single-Chip Mode and Expanded Minimum Modes: A pin functions as an output pin if the
corresponding bit in P6DDR is set to “1,” and as an input pin if the bit is cleared to “0.”
Bits 3 to 0 can be written but not read. An attempt to read these bits does not cause an error, but
all bits are read as “1,” regardless of their true values.
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