HD6473258P10V Datasheet, PDF (90/301 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

Hardware standby
Mode 3
P1n
Mode 1 or 2
Mode 1 Reset
SR
Q
D
P1nDDR
C*
WP1D
Reset
R
Q
D
P1nDR
C
WP1
RP1
WP1D: Write Port 1 DDR
WP1: Write Port 1
RP1: Read Port 1
n =0 to7
* Set-priority
Figure 5-1. Port 1 Schematic Diagram
5.3 Port 2
Port 2 is an 8-bit input/output port that also provides the high bits of the address bus. The function
of port 2 depends on the MCU mode as indicated in table 5-4.
Figure 5-1
Table 5-4. Functions of Port 2
Mode 1
Address bus (high)
(A15 to A8)
Mode 2
Input port or
Address bus (high)
(A15 to A8)*
Mode 3
Input/output port
* Depending on the bit settings in the data direction register: 0—input pin; 1—address pin
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