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26 EPSON S1C88650 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Table 5.1.1(i) I/O Memory map (00FF3EH–00FF41H)
SR R/WAddress Bit Name Function Comment10
D7
D6
D5
D4
D3
D2
D1
D0
PTM27
PTM26
PTM25
PTM24
PTM23
PTM22
PTM21
PTM20
PTM2 data D7 (MSB)
PTM2 data D6
PTM2 data D5
PTM2 data D4
PTM2 data D3
PTM2 data D2
PTM2 data D1
PTM2 data D0 (LSB)
1R
High Low
D7
D6
D5
D4
D3
D2
D1
D0
PTM37
PTM36
PTM35
PTM34
PTM33
PTM32
PTM31
PTM30
PTM3 data D7 (MSB)
PTM3 data D6
PTM3 data D5
PTM3 data D4
PTM3 data D3
PTM3 data D2
PTM3 data D1
PTM3 data D0 (LSB)
1R
High Low
00FF3F
00FF3E
00FF40 D7
D6
D5
D4
D3
D2
D1
D0
WDEN
FOUT2
FOUT1
FOUT0
WDRST
TMRST
TMRUN
Watchdog timer enable
FOUT frequency selection
Constantly "0" when
being read
1
0
0
0
0
–
–
0
R/W
R/W
R/W
R/W
R/W
W
W
R/W
Enable Disable
FOUT2
1
1
1
1
0
0
0
0
FOUT1
1
1
0
0
1
1
0
0
FOUT0
1
0
1
0
1
0
1
0
Frequency
f
OSC3
/ 8
f
OSC3
/ 4
f
OSC3
/ 2
f
OSC3
/ 1
f
OSC1
/ 8
f
OSC1
/ 4
f
OSC1
/ 2
f
OSC1
/ 1
FOUT output control
Watchdog timer reset
Clock timer reset
Clock timer Run/Stop control
On
Reset
Reset
Run
Off
No operation
No operation
Stop
FOUTON
00FF41 D7
D6
D5
D4
D3
D2
D1
D0
TMD7
TMD6
TMD5
TMD4
TMD3
TMD2
TMD1
TMD0
Clock timer data
Clock timer data
Clock timer data
Clock timer data
Clock timer data
Clock timer data
Clock timer data
Clock timer data
0R
High Low
1 Hz
2 Hz
4 Hz
8 Hz
16 Hz
32 Hz
64 Hz
128 Hz