HD6432621 Hitachi, HD6432621 Datasheet - Page 1065

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Port Name
Pin Name
PF1/BACK
PF0/BREQ/
IRQ2
HTxD
HRxD
Legend:
H
L
T
kept
DDR
OPE
WAITE
BRLE
BREQOE : BREQO pin enable
: High level
: Low level
: High impedance
: Input port becomes high-impedance, output port retains state
: Data direction register
: Output port enable
: Wait input enable
: Bus release enable
MCU
Operating
Mode
4 to 6
7
4 to 6
7
4 to 7
4 to 7
Power-
On
Reset
T
T
T
T
H
Input
Hardware
Standby
Mode
T
T
T
T
T
T
Software
Standby Mode
[BRLE = 0]
I/O port
[BRLE = 1]
H
kept
[BRLE = 0]
kept
[BRLE = 1]
T
kept
H
T
Bus Release
State
[BRLE = 0]
I/O port
[BRLE = 1]
L
kept
T
kept
H
Input
Program
Execution State
Sleep Mode
[BRLE = 0]
I/O port
[BRLE = 1]
BACK
I/O port
[BRLE = 0]
I/O port
[BRLE = 1]
BREQ
I/O port
Output
Input
1021