I-18
EPSON
S1C62740 TECHNICAL HARDWARE
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Table 4.1.1(c) I/O memory map (E0H–EFH)
Address
Comment
Register
D3
D2
D1
D0
Name
Init
1
0
*1
E0H
BZFQ
R/W
BZR03
BZR02
0
BZFQ
0
–
0
R03 port output selection
R02 port output selection
Unused
Buzzer frequency selection
Buzzer
2kHz
DC
4kHz
0
BZR02
BZR03
*2
*5
E1H
FOFQ0
R/W
FOR00
0
FOFQ1
FOFQ0
0
–
0
FOUT
DC
FOFQ1
0
FOR00
*2
*5
E2H
TMRST
W
0
TMRST
Reset
–
0
–
*2
*5
TM0
R
TM3
TM2
TM1
TM0
–
TM1
TM2
TM3
E3H
*3
E6H
SWRST
R
0
SWRUN
SWRST
–
0
Reset
Run
Reset
Stop
–
SWRUN
0
*2
*5
E7H
SWL0
SWL3
SWL2
SWL1
SWL0
0
SWL1
SWL2
SWL3
E8H
SWH0
SWH3
SWH2
SWH1
SWH0
0
SWH1
SWH2
SWH3
E9H
PTRST
W
PTR01
0
PTRUN
PTRST
0
–
0
–
R01 port output selection
Unused
Programmable timer Run/Stop
Programmable timer reset (reload)
PTOVF
Run
Reset
DC
Stop
–
PTRUN
R/W
0
R
PTR01
R/W
*2
*5
EAH
PTC0
PTD1
PTD0
PTC1
PTC0
0
PTC1
PTD0
PTD1
R/W
*7
EBH
PT0
R
PT3
PT2
PT1
PT0
–
PT1
PT3
*3
ECH
PT4
PT7
PT6
PT5
PT4
–
PT5
PT6
PT7
*3
R
Programmable timer pre-divider selection
0: 1/256, 1: 1/32, 2: 1/4, 3: 1/1
Programmable timer clock source selection
0: K10 (NR), 1: K10, 2: fOSC1, 3: fOSC3
R
R00 port output selection
Unused
FOUT frequency selection
0: 512 Hz, 1: 4096 Hz, 2: fOSC1, 3: fOSC3
Unused
Clock timer and watchdog timer reset
Clock timer data (16 Hz)
Clock timer data (32 Hz)
Clock timer data (64 Hz)
Clock timer data (128 Hz)
Unused
Stopwatch timer Run/Stop
Stopwatch timer reset
PT2
EDH
RD0
RD3
RD2
RD1
RD0
–
RD1
RD2
RD3
R/W
EEH
RD4
RD7
RD6
RD5
RD4
–
RD5
RD6
RD7
R/W
EFH
LCDON
R/W
LDTY1
LDTY0
0
LCDON
0
–
0
On
Off
0
R
LDTY0
LDTY1
*5
LCD drive duty selection
0: 1/4, 1: 1/3, 2: 1/2, 3: 1/1
Unused
LCD display control (LCD display all off)
R/W
R
Stopwatch timer data 1/10 sec (BCD)
MSB
LSB
*3
*2
Programmable timer reload data
(low-order 4 bits)
LSB
Programmable timer reload data
(high-order 4 bits)
MSB
R/W
WD0
WDRST
0
WD1
WD0
Reset
–
0
Reset
–
WD1
0
WDRST
E5H
*2
*5
Watchdog timer reset
Unused
Watchdog timer data (1/4 Hz)
Watchdog timer data (1/2 Hz)
RR/W
R
R/W
R
TM4
R
TM7
TM6
TM5
TM4
–
TM5
TM6
TM7
E4H
*3
Clock timer data (1 Hz)
Clock timer data (2 Hz)
Clock timer data (4 Hz)
Clock timer data (8 Hz)
WR
W
Stopwatch timer data 1/100 sec (BCD)
MSB
LSB
Programmable timer data (low-order 4 bits)
LSB
Programmable timer data (high-order 4 bits)
MSB