CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U16315EJ1V0UD
65
Table 3-5. Special Function Register List (2/3)
Manipulatable Bit Unit
Address
Special Function Register (SFR) Name
Symbol
R/W
1 Bit
8 Bits
16 Bits
After
Reset
FF33H
Pull-up resistor option register 3
PU3
R/W
√
√
−
00H
FF37H
Pull-up resistor option register 7
PU7
R/W
√
√
−
00H
FF3CH
Pull-up resistor option register 12
PU12
R/W
√
√
−
00H
FF3EH
Pull-up resistor option register 14
PU14
R/W
√
√
−
00H
FF40H
Clock output selection register
CKS
R/W
√
√
−
00H
FF41H
8-bit timer compare register 51
CR51
R/W
−
√
−
00H
FF43H
8-bit timer mode control register 51
TMC51
R/W
√
√
−
00H
FF48H
External interrupt rising edge enable register
EGP
R/W
√
√
−
00H
FF49H
External interrupt falling edge enable register
EGN
R/W
√
√
−
00H
FF4FH
Input switch control register
ISC
R/W
√
√
−
00H
FF50H
Asynchronous serial interface operation mode
register 6
ASIM6
R/W
√
√
−
01H
FF53H
Asynchronous serial interface reception error
status register 6
ASIS6
R
−
√
−
00H
FF55H
Asynchronous serial interface transmission
status register 6
ASIF6
R
−
√
−
00H
FF56H
Clock selection register 6
CKSR6
R/W
−
√
−
00H
FF57H
Baud rate generator control register 6
BRGC6
R/W
−
√
−
FFH
FF58H
Asynchronous serial interface control register 6
ASICL6
R/W
√
√
−
16H
FF69H
8-bit timer H mode register 0
TMHMD0
R/W
√
√
−
00H
FF6AH
Timer clock selection register 50
TCL50
R/W
−
√
−
00H
FF6BH
8-bit timer mode control register 50
TMC50
R/W
√
√
−
00H
FF6CH
8-bit timer H mode register 1
TMHMD1
R/W
√
√
−
00H
FF6DH
8-bit timer H carrier control register 1
TMCYC1
R/W
√
√
−
00H
FF6EH
Key return mode register
KRM
R/W
√
√
−
00H
FF6FH
Watch timer operation mode register
WTM
R/W
√
√
−
00H
FF70H
Asynchronous serial interface operation mode
register 0
ASIM0
R/W
√
√
−
01H
FF71H
Baud rate generator control register 0
BRGC0
R/W
−
√
−
1FH
FF72H
Receive buffer register 0
RXB0
R
−
√
−
FFH
FF73H
Asynchronous serial interface reception error
status register 0
ASIS0
R
−
√
−
00H
FF74H
Transmit shift register 0
TXS0
W
−
√
−
FFH
FF80H
Serial operation mode register 10
CSIM10
R/W
√
√
−
00H
FF81H
Serial clock selection register 10
CSIC10
R/W
√
√
−
00H
FF84H
Transmit buffer register 10
SOTB10
R/W
−
√
−
Undefined
FF8CH
Timer clock selection register 51
TCL51
R/W
−
√
−
00H
FF98H
Watchdog timer mode register
WDTM
R/W
−
√
−
67H
FF99H
Watchdog timer enable register
WDTE
R/W
−
√
−
9AH
FFA0H
Ring-OSC mode register
RCM
R/W
√
√
−
00H
FFA1H
Main clock mode register
MCM
R/W
√
√
−
00H