HD6432621 Hitachi, HD6432621 Datasheet - Page 923
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
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SCRX—Serial Control Register X
SBYCR—Standby Control Register
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
:
:
:
:
:
:
Software standby
SSBY
R/W
0 Transition to sleep mode after execution of SLEEP instruction
1
R/W
7
0
—
7
0
Transition to software standby mode after execution of SLEEP instruction
Flash memory control register enable
0 Area H'FFFFA8 to H'FFFFAC flash control registers are not selected
1
Area H'FFFFA8 to H'FFFFAC flash control registers are selected
STS2
R/W
R/W
6
0
—
6
0
Standby timer select
0
1
STS1
R/W
R/W
5
0
—
0
1
0
1
5
0
0
1
0
1
0
1
0
1
Standby time = 8192 states
Standby time = 16384 states
Standby time = 32768 states
Standby time = 65536 states
Standby time = 131072 states
Standby time = 262144 states
Reserved
Standby time = 16 states
STS0
Output port enable
R/W
R/W
0 In software standby mode, address bus and
1
4
0
—
4
0
bus control signals are high-impedance
In software standby mode, address bus and
bus control signals retain their output state
H'FDB4
H'FDE4
FLSHE
OPE
R/W
R/W
3
1
3
0
R/W
—
—
2
0
—
2
0
Power-Down Modes
R/W
—
—
1
0
—
1
0
R/W
—
—
0
0
—
0
0
ROM
879
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