S1C63656 TECHNICAL MANUAL
EPSON
21
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Table 4.1.1 (d) I/O memory map (FF74H–FF85H)
Address
Comment
D3
D2
Register
D1
D0
Name
Init
∗
1
1
0
W
R/W
R
FF74H
0
0
TMRST TMRUN
0
∗
3
0
∗
3
TMRST
∗
3
TMRUN
–
∗
2
–
∗
2
Reset
0
Reset
Run
Invalid
Stop
Unused
Unused
Clock timer reset (writing)
Clock timer Run/Stop
R
FF75H
TM3
TM2
TM1
TM0
TM3
TM2
TM1
TM0
0
0
0
0
Clock timer data (16 Hz)
Clock timer data (32 Hz)
Clock timer data (64 Hz)
Clock timer data (128 Hz)
R
FF76H
TM7
TM6
TM5
TM4
TM7
TM6
TM5
TM4
0
0
0
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
FF78H
EDIR
DKM2
DKM1
DKM0
EDIR
DKM2
DKM1
DKM0
0
0
0
0
Enable
Disable
Direct input enable
Key mask
selection
R/W
W
R
FF79H
LCURF CRNWF SWRUN SWRST
LCURF
CRNWF
SWRUN
SWRST
∗
3
0
0
0
Reset
Request
Renewal
Run
Reset
No
No
Stop
Invalid
Lap data carry-up request flag
Capture renewal flag
Stopwatch timer Run/Stop
Stopwatch timer reset (writing)
DRL3
DRL2
DRL1
DRL0
–
∗
2
–
∗
2
–
∗
2
–
∗
2
Low-order 8-bit destination register
(low-order 4 bits)
LSB
R/W
FF82H
DRL3
DRL2
DRL1
DRL0
DRL7
DRL6
DRL5
DRL4
–
∗
2
–
∗
2
–
∗
2
–
∗
2
MSB
Low-order 8-bit destination register
(high-order 4 bits)
R/W
FF83H
DRL7
DRL6
DRL5
DRL4
DRH3
DRH2
DRH1
DRH0
–
∗
2
–
∗
2
–
∗
2
–
∗
2
High-order 8-bit destination register
(low-order 4 bits)
LSB
R/W
FF84H
DRH3
DRH2
DRH1
DRH0
DRH7
DRH6
DRH5
DRH4
–
∗
2
–
∗
2
–
∗
2
–
∗
2
MSB
High-order 8-bit destination register
(high-order 4 bits)
R/W
FF85H
DRH7
DRH6
DRH5
DRH4
SWD7
SWD6
SWD5
SWD4
0
0
0
0
Stopwatch timer data
BCD (1/100 sec)
R
FF7BH
SWD7
SWD6
SWD5
SWD4
SWD11
SWD10
SWD9
SWD8
0
0
0
0
Stopwatch timer data
BCD (1/10 sec)
R
FF7CH
SWD11 SWD10
SWD9
SWD8
SR3
SR2
SR1
SR0
–
∗
2
–
∗
2
–
∗
2
–
∗
2
Source register (low-order 4 bits)
LSB
R/W
FF80H
SR3
SR2
SR1
SR0
SR7
SR6
SR5
SR4
–
∗
2
–
∗
2
–
∗
2
–
∗
2
MSB
Source register (high-order 4 bits)
R/W
FF81H
SR7
SR6
SR5
SR4
R
FF7AH
SWD3
SWD2
SWD1
SWD0
SWD3
SWD2
SWD1
SWD0
0
0
0
0
Stopwatch timer data
BCD (1/1000 sec)
Содержание S1C63656
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