S1C63808 TECHNICAL MANUAL
EPSON
19
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Address
Comment
D3
D2
Register
D1
D0
Name
Init 1
10
WR/W
R
FF78H
00
TMRST TMRUN
0 3
TMRST3
TMRUN
– 2
Reset
0
Reset
Run
Invalid
Stop
Unused
Clock timer reset (writing)
Clock timer Run/Stop
R
FF79H
TM3
TM2
TM1
TM0
TM3
TM2
TM1
TM0
0
Clock timer data (16 Hz)
Clock timer data (32 Hz)
Clock timer data (64 Hz)
Clock timer data (128 Hz)
R
FF7AH
TM7
TM6
TM5
TM4
TM7
TM6
TM5
TM4
0
Clock timer data (1 Hz)
Clock timer data (2 Hz)
Clock timer data (4 Hz)
Clock timer data (8 Hz)
0
None
1
K02
2
K02–03
3
K02–03,10
[DKM2, 1, 0]
Key mask
4
K10
5
K10–11
6
K10–12
7
K10–13
[DKM2, 1, 0]
Key mask
R/W
FF7BH
EDIR
DKM2
DKM1
DKM0
EDIR
DKM2
DKM1
DKM0
0
Enable
Disable Direct input enable
Key mask
selection
R/W
W
R
FF7CH
LCURF CRNWF SWRUN SWRST
LCURF
CRNWF
SWRUN
SWRST3
0
Reset
Request
Renewal
Run
Reset
No
Stop
Invalid
Lap data carry-up request flag
Capture renewal flag
Stopwatch timer Run/Stop
Stopwatch timer reset (writing)
SWD7
SWD6
SWD5
SWD4
0
Stopwatch timer data
BCD (1/100 sec)
R
FF7EH
SWD7
SWD6
SWD5
SWD4
SWD11
SWD10
SWD9
SWD8
0
Stopwatch timer data
BCD (1/10 sec)
R
FF7FH
SWD11 SWD10
SWD9
SWD8
DRL3
DRL2
DRL1
DRL0
– 2
Low-order 8-bit destination register
(low-order 4 bits)
LSB
R/W
FF82H
DRL3
DRL2
DRL1
DRL0
DRL7
DRL6
DRL5
DRL4
– 2
MSB
Low-order 8-bit destination register
(high-order 4 bits)
R/W
FF83H
DRL7
DRL6
DRL5
DRL4
SR3
SR2
SR1
SR0
– 2
Source register (low-order 4 bits)
LSB
R/W
FF80H
SR3
SR2
SR1
SR0
SR7
SR6
SR5
SR4
– 2
MSB
Source register (high-order 4 bits)
R/W
FF81H
SR7
SR6
SR5
SR4
DRH3
DRH2
DRH1
DRH0
– 2
High-order 8-bit destination register
(low-order 4 bits)
LSB
R/W
FF84H
DRH3
DRH2
DRH1
DRH0
DRH7
DRH6
DRH5
DRH4
– 2
MSB
High-order 8-bit destination register
(high-order 4 bits)
R/W
FF85H
DRH7
DRH6
DRH5
DRH4
R
FF7DH
SWD3
SWD2
SWD1
SWD0
SWD3
SWD2
SWD1
SWD0
0
Stopwatch timer data
BCD (1/1000 sec)
FF6FH
0
BDTY2
BDTY1
BDTY0
RR/W
0 3
BDTY2
BDTY1
BDTY0
– 2
0
Unused
Buzzer signal duty ratio selection
(refer to main manual)
Table 4.1.1 (e) I/O memory map (FF6FH–FF85H)