NEC uPD78056Y - Manual (Page 117)

117
CHAPTER 5 CPU ARCHITECTURE
IF0L
IF0H
MK0L
MK0H
PR0L
PR0H
Address Special-Function Register (SFR) Name Symbol R/W After Reset
FFD0H to
FFDFH
FFE0H Interrupt request flag register 0L
√ √
FFE1H Interrupt request flag register 0H
√ √
FFE2H Interrupt request flag register 1L IF1L
√ √
—
FFE4H Interrupt mask flag register 0L
√ √
FFE5H Interrupt mask flag register 0H
√ √
FFE6H Interrupt mask flag register 1L MK1L
√ √
—
FFE8H Priority order specify flag register 0L
√ √
FFE9H Priority order specify flag register 0H
√ √
FFEAH Priority order specify flag register 1L PR1L
√ √
—
FFECH External interrupt mode register 0 INTM0 — √ —
FFEDH External interrupt mode register 1 INTM1 —
√
—
FFF0H Memory size switching register IMS — √ — Note2
FFF2H Oscillation mode selection register OSMS W —
√
—
FFF3H Pull-up resistor option register H PUOH R/W √ √ —
FFF4H Internal expansion RAM size IXS W —
√
— 0AH
switching register (Note3)
FFF6H Key return mode register KRM
√ √
— 02H
FFF7H Pull-up resistor option register L PUOL √ √ — 00H
FFF8H Memory expansion mode register MM
√ √
— 10H
FFF9H Watchdog timer mode register WDTM √ √ — 00H
FFFAH Oscillation stabilization time select register OSTS — √ —
FFFBH Processor clock control register PCC √ √ —
Table 5-6. Special-Function Register List (3/3)
Manipulatable Bit Unit
8 bits 1 bit 16 bits
External access area Note1 √ √
— Undefined R/W
IF0
√
00H
MK0
√
FFH
PR0
√
00H
00H
R/W
04H
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.
µ
PD78052, 78052Y: 44H,
µ
PD78053, 78053Y: C6H,
µ
PD78054, 78054Y: C8H,
µ
PD78P054: C8H,
µ
PD78055, 78055Y: CAH,
µ
PD78056, 78056Y: CCH,
µ
PD78058, 78058Y: CFH,
µ
PD78P058,
78P058Y: CFH
3. This register is provided only in the
µ
PD78058, 78058Y, 78P058, and 78P058Y.