RL78/G10 CHAPTER 3 CPU ARCHITECTURE
R01UH0384EJ0311 Rev. 3.11 38
Dec 22, 2016
Table 3-4. SFR List (2/2)
Address Special Function Register (SFR) Name Symbol R/W Manipulable Bit Range After Reset
1-bit 8-bit
FFFA0H
Clock operation mode control register
Note 1
CMC R/W
− √
00H
FFFA1H
Clock operation status control register
Note 1
CSC R/W
√ √
80H
FFFA2H
Oscillation stabilization time counter status
register
Note 1
OSTC R/W
√ √
00H
FFFA3H
Oscillation stabilization time select register
Note 1
OSTS R
− √
07H
FFFA4H
System clock control register
Note 1
CKC R/W
√ √
00H
FFFA5H Clock output select register 0 CKS0 R/W
√ √
00H
FFFA8H Reset control flag register RESF R
− √
Undefined
Note 2
FFFABH Watchdog timer enable register WDTE R/W
− √
1AH/9AH
Note 3
FFFE0H Interrupt request flag register 0L IF0L R/W
√ √
00H
FFFE1H Interrupt request flag register 0H IF0H R/W
√ √
00H
FFFE2H Interrupt request flag register 1L
Note 1
IF1L R/W
√ √
00H
FFFE4H Interrupt mask flag register 0L MK0L R/W
√ √
FFH
FFFE5H Interrupt mask flag register 0H MK0H R/W
√ √
FFH
FFFE6H Interrupt mask flag register 1L
Note 1
MK1L R/W
√ √
FFH
FFFE8H Priority specification flag register 00L PR00L R/W
√ √
FFH
FFFE9H Priority specification flag register 00H PR00H R/W
√ √
FFH
FFFEAH Priority specification flag register 01L
Note 1
PR01L R/W
√ √
FFH
FFFECH Priority specification flag register 10L PR10L R/W
√ √
FFH
FFFEDH Priority specification flag register 10H PR10H R/W
√ √
FFH
FFFEEH Priority specification flag register 11L
Note 1
PR11L R/W
√ √
FFH
Notes 1. 16-pin products only.
2. The reset values of the register vary depending on the reset source as shown below.
Reset Source
Register
RESET Input
Reset by
execution of
illegal
instruction
Reset by
WDT
Reset by
SPOR
Reset by data
retention lower
limit voltage
RESF TRAP bit Cleared (0) Set (1) Held Held Cleared (0)
WDTRF bit Held Set (1) Held
SPORF bit Held Held Set (1)
3. The reset value of the WDTE register is determined by the setting of the option byte.
Remark For extended SFRs (2nd SFRs), see Table 3-5 Extended SFR (2nd SFR) List.
<R>
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