
S1C8F626 TECHNICAL MANUAL
EPSON
21
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (I/O Memory Map)
Table 5.1.1(i) I/O Memory map (00FF41H–00FF49H)
SR R/W
Address Bit
Name
Function
Comment
10
00FF41 D7
D6
D5
D4
D3
D2
D1
D0
TMD7
TMD6
TMD5
TMD4
TMD3
TMD2
TMD1
TMD0
Clock timer data
0R
High
Low
1 Hz
2 Hz
4 Hz
8 Hz
16 Hz
32 Hz
64 Hz
128 Hz
00FF42 D7
D6
D5
D4
D3
D2
D1
D0
–
SWRST
SWRUN
–
Stopwatch timer reset
Stopwatch timer Run/Stop control
Constantly "0" when
being read
–
0
W
R/W
–
Reset
Run
–
No operation
Stop
00FF43 D7
D6
D5
D4
D3
D2
D1
D0
SWD7
SWD6
SWD5
SWD4
SWD3
SWD2
SWD1
SWD0
Stopwatch timer data
BCD (1/10 sec)
Stopwatch timer data
BCD (1/100 sec)
0R
00FF48 D7
D6
D5
D4
D3
D2
D1
D0
–
EPR0
PMD0
SCS01
SCS00
SMD01
SMD00
ESIF0
––
0
R/W
–
SCS01
1
0
SCS00
1
0
1
0
Clock source
Programmable timer 1
fOSC3 / 4
fOSC3 / 8
fOSC3 / 16
SMD01
1
0
SMD00
1
0
1
0
Mode
Asynchronous 8-bit
Asynchronous 7-bit
Clock synchronous slave
Clock synchronous master
Serial I/F 0 parity enable register
Serial I/F 0 parity mode selection
Serial I/F 0 clock source selection
Serial I/F 0 mode selection
Serial I/F 0 enable register
With parity
Odd
Serial I/F
Non parity
Even
I/O port
"0" when being read
Only for
asynchronous mode
In the clock synchro-
nous slave mode,
external clock is
selected.
00FF49 D7
D6
D5
D4
D3
D2
D1
D0
–
FER0
PER0
OER0
RXTRG0
RXEN0
TXTRG0
TXEN0
–
"0" when being read
Only for
asynchronous mode
–
0
R/W
–
R
W
R
W
R
W
R
W
R
W
Serial I/F 0 framing error flag
Serial I/F 0 parity error flag
Serial I/F 0 overrun error flag
Serial I/F 0 receive trigger/status
Serial I/F 0 receive enable
Serial I/F 0 transmit trigger/status
Serial I/F 0 transmit enable
Error
Reset (0)
Error
Reset (0)
Error
Reset (0)
Run
Trigger
Enable
Run
Trigger
Enable
No error
No operation
No error
No operation
No error
No operation
Stop
No operation
Disable
Stop
No operation
Disable