Specifications

S1C62N82 TECHNICAL SOFTWARE EPSON II-27
CHAPTER 3: PERIPHERAL CIRCUITS (I/O Ports)
3.5 I/O Ports
I/O port memory
map
Table 3.5.1 I/O memory map
Address Comment
Register
D3 D2 D1 D0 Name SR 1 0
0F6H
P03 P02 P01 P00 P03
P02
P01
P00
–
–
–
–
I/O port (P00–P03)
High
High
High
High
Low
Low
Low
Low
R/W
0FCH
CLKCHG OSCC 0 IOC CLKCHG
OSCC
0
IOC
0
0
0
CPU clock switch
OSC3 oscillator ON/OFF
I/O port P00–P03 Input/Output
OSC3
ON
Output
OSC1
OFF
Input
R/W
R/W R
*5
*1 Initial value following initial reset
*2 Not set in the circuit
*3 Undefined
*4 Reset (0) immediately after being read
*5 Always 0 when being read
*6 Refer to main manual