NEC PD78052 User Manual page 117

Address Special-Function Register (SFR) Name
FFD0H to
External access area
FFDFH
FFE0H Interrupt request flag register 0L
FFE1H Interrupt request flag register 0H
FFE2H Interrupt request flag register 1L
FFE4H Interrupt mask flag register 0L
FFE5H Interrupt mask flag register 0H
FFE6H Interrupt mask flag register 1L
FFE8H Priority order specify flag register 0L
FFE9H Priority order specify flag register 0H
FFEAH Priority order specify flag register 1L
FFECH External interrupt mode register 0
FFEDH External interrupt mode register 1
FFF0H Memory size switching register
FFF2H Oscillation mode selection register
FFF3H Pull-up resistor option register H
FFF4H Internal expansion RAM size
switching register
FFF6H Key return mode register
FFF7H Pull-up resistor option register L
FFF8H Memory expansion mode register
FFF9H Watchdog timer mode register
FFFAH Oscillation stabilization time select register
FFFBH Processor clock control register
Notes 1. The external access area cannot be accessed in SFR addressing. Access the area with direct
addressing.
2. The value after reset depends on products.
PD78052, 78052Y: 44H, PD78053, 78053Y: C6H, PD78054, 78054Y: C8H, PD78P054: C8H,
PD78055, 78055Y: CAH,
78P058Y: CFH
3. This register is provided only in the PD78058, 78058Y, 78P058, and 78P058Y.
CHAPTER 5 CPU ARCHITECTURE
Table 5-6. Special-Function Register List (3/3)
Symbol
Note1
IF0
MK0
MK1L
PR0
PR1L
INTM0
INTM1
OSMS
PUOH
(Note3)
PUOL
WDTM
OSTS
PD78056, 78056Y: CCH,
Manipulatable Bit Unit
R/W
1 bit
R/W
IF0L
IF0H
IF1L
MK0L
MK0H
PR0L
PR0H
—
—
IMS —
W —
R/W
IXS W —
R/W
KRM
MM
—
PCC
PD78058, 78058Y: CFH,
After Reset
8 bits 16 bits
— Undefined
00H
—
FFH
—
—
00H
—
—
— Note2
— 00H
—
— 0AH
— 02H
— 00H
— 10H
— 00H
—
04H
—
PD78P058,
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