Specifications

II-20 EPSON S1C6S2N7 TECHNICAL SOFTWARE
CHAPTER 3: PERIPHERAL CIRCUITS (Special Use Output Ports)
Special Use Output Ports3.3
Special use output
port memory map
Table 3.3.1 I/O memory map
Address Comment
Register
D3 D2 D1 D0 Name SR
*1
10
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
0FDH
XBZR 0 XFOUT1 XFOUT0
R
XBZR
0
XFOUT1
XFOUT0
0
0
0
Buzzer frequency control
2 kHz
High
High
4 kHz
Low
Low
R/WR/W
*5
FOUT frequency control:
XFOUT1(0), XFOUT0(0) -> F1
XFOUT1(0), XFOUT0(1) -> F2
XFOUT1(1), XFOUT0(0) -> F3
XFOUT1(1), XFOUT0(1) -> F4
*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