117
CHAPTER 5 CPU ARCHITECTURE
Address
Special Function Register (SFR) Name
Symbol
R/W
After Reset
FF74H
Transmit shift register
TXS
SIO2
W
—
√
—
FFH
Receive buffer register
RXB
R
FF80H
A/D converter mode register
ADM
R/W
√
√
—
01H
FF84H
A/D converter input select register
ADIS
—
√
—
00H
FF8AH
Correction control register
CORCN
√
√
—
FF90H
D/A conversion value set register 0
DACS0
—
√
—
FF91H
D/A conversion value set register 1
DACS1
—
√
—
FF98H
D/A converter mode registe
DAM
√
√
—
FFD0H to
External access area
Note 1
√
√
—
Undefined
FFDFH
FFE0H
Interrupt request flag register 0L
IF0
IF0L
√
√
√
00H
FFE1H
Interrupt request flag register 0H
IF0H
√
√
FFE2H
Interrupt request flag register 1L
IF1L
√
√
—
FFE4H
Interrupt mask flag register 0L
MK0
MK0L
√
√
√
FFH
FFE5H
Interrupt mask flag register 0H
MK0H
√
√
FFE6H
Interrupt mask flag register 1L
MK1L
√
√
—
FFE8H
Priority order specify flag register 0L
PR0
PR0L
√
√
√
FFE9H
Priority order specify flag register 0H
PR0H
√
√
FFEAH
Priority order specify flag register 1L
PR1L
√
√
—
FFECH
External interrupt mode register 0
INTM0
—
√
—
00H
FFEDH
External interrupt mode register 1
INTM1
—
√
—
FFF0H
Internal memory size switching register
IMS
—
√
—
Note 2
FFF2H
Oscillation mode selection register
OSMS
W
—
√
—
00H
FFF3H
Pull-up resistor option register H
PUOH
R/W
√
√
—
FFF4H
Internal expansion RAM size
IXS
W
—
√
—
0AH
Note 3
switching register
FFF6H
Key return mode register
KRM
R/W
√
√
—
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
—
√
—
04H
FFFBH
Processor clock control register
PCC
√
√
—
Table 5-3. Special Function Register List (3/3)
8 bits
1 bit
16 bits
Notes
1. The external access area cannot be accessed in SFR addressing. Access the area through direct
addressing.
2. The value after reset depends on products.
µ
PD78076,78076Y: CCH,
µ
PD78078, 78078Y: CFH,
µ
PD78P078, 78P078Y: CFH
When a mask ROM version is used, do not set to IMS any value other than that determined at reset,
unless external device expansion function is used with the
µ
PD78078 or 78078Y.
3. When a mask ROM version is used, do not set to IXS any value other than that determined at reset.
Manipulation
Содержание PD78076
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