Output Ports (R00-R03, R10-R13; Output Port Memory Map - Epson S1C6S3N2 Technical Manual

CHAPTER 5: PERIPHERAL CIRCUITS (Output Ports)
Output port memory
map
Table 5.4.1 I/O data memory map (output ports)
Address
D3
R03
07BH
R13
07CH
BZFQ
R/W
0F6H
*1 Initial value at the time of initial reset
*2 Not set in the circuit
*3 Undefined
*4 Reset (0) immediately after being read
*5 Constantly "0" when being read
II-40
5.4 Output Ports (R00–R03, R10–R13)
The S1C6S3N2 Series reserves eight bits (4 bits × 2) for
general output ports. The output ports R10–R13 can be
used as special output ports.
Register
D2 D1 D0 Name
R02 R01 R00 R03
R02
R/W
R01
R00
R12 R11 R10 R13
R12
R/W
R11
R10
0 0 0 BZFQ
0
R
0
0
SR *1 1 0
0 High Low
0 High Low
0 High Low
0 High Low
0 High Low Output port (R13, BZ)
0 High Low Output port (R12, FOUT)
0 High Low
Output port (R11)
0 High Low
Output port (R10, BZ)
0 2 kHz 4 kHz
Buzzer frequency selection register
*2
–
Unused
*2
–
Unused
*2
–
Unused
EPSON
Comment
Output port (R00–R03)
S1C6S3N2 TECHNICAL SOFTWARE