Specifications

I-16 EPSON S1C6S2N7 TECHNICAL HARDWARE
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Table 4.1.1(c) I/O memory map
Address Comment
Register
D3 D2 D1 D0 Name SR
*1
10
0EEH
0EFH
0 0 ISW1 ISW0
0 IT2 IT8 IT32
0
0
ISW1
ISW0
0
0
0
IT2
IT8
IT32
0
0
0
Yes
Yes
Yes
Interrupt factor flag (stopwatch 1 Hz)
Interrupt factor flag (stopwatch 10 Hz)
Interrupt factor flag (clock timer 2 Hz)
Interrupt factor flag (clock timer 8 Hz)
Interrupt factor flag (clock timer 32 Hz)
Yes
Yes
No
No
R
R
*5
*5
*4
*4
0F6H
P03 P02 P01 P00
P03
P02
P01
P00
0
I/O port (P00–P03)
High
High
High
High
Low
Low
Low
Low
*2
*2
*2
*2
R/W
*5
*4
*4
*4
No
No
No
0F3H
R03 R02
R01 R00
R03
R02
R01
BUZZER
R00
FOUT
0
0
0
0
0
0
High
High
High
ON
High
ON
Low
Low
Low
OFF
Low
OFF
R03 output port data
R02 output port data
R01 output port data
Buzzer ON/OFF control register
R00 output port data
Frequency output ON/OFF control register
R/W
BUZZER FOUT
* 1 Initial value following initial reset
* 2 Not set in the circuit
* 3 Undefined
* 4 Reset (0) immediately after being read
* 5 Constantly 0 when being read
* 6 Refer to main manual