S1C63666 TECHNICAL MANUAL
EPSON
21
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map)
Table 4.1.1 (d) I/O memory map (FF7AH–FF93H)
Address
Comment
D3
D2
Register
D1
D0
Name
Init
∗
1
1
0
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
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
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
FF86H
NF
VF
ZF
CALMD
R
R/W
NF
VF
ZF
CALMD
0
0
0
0
Negative
Overflow
Zero
Run
Div.
Positive
No
No
Stop
Mult.
Negative flag
Overflow flag
Zero flag
Operation status (reading)
Calculation mode selection (writing)
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
MC3
MC2
MC1
MC0
–
∗
2
–
∗
2
–
∗
2
–
∗
2
Measurement counter MC0–MC3
LSB
R/W
R/W
FF92H
MC3
MC2
MC1
MC0
MC7
MC6
MC5
MC4
–
∗
2
–
∗
2
–
∗
2
–
∗
2
Measurement counter MC4–MC7
FF93H
MC7
MC6
MC5
MC4
FF90H
0
0
0
SENSEL
R
R/W
0
∗
3
0
∗
3
0
∗
3
SENSEL
–
∗
2
–
∗
2
–
∗
2
0
Sensor 1 Sensor 0
Unused
Unused
Unused
Sensor selection
FF91H
OVTBC
OVMC RFRUNR RFRUNS
R/W
OVTBC
OVMC
RFRUNR
RFRUNS
0
0
0
0
Overflow
Overflow
Run
Run
Non-ov
Non-ov
Stop
Stop
Time base counter overflow flag
Measurement counter overflow flag
Reference oscillation Run/Stop control
Sensor oscillation Run/Stop control
R
FF7AH
SWD3
SWD2
SWD1
SWD0
SWD3
SWD2
SWD1
SWD0
0
0
0
0
Stopwatch timer data
BCD (1/1000 sec)
Содержание S1C63666
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