HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 346

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table C-1. Pin States (cont.)
Pin
name
P8
P9
P9
P9
AS, WR, RD
P9
Notes:
1. 3-state: High-impedance state
2. Prev. state: Previous state. Input ports are in the high-impedance state (with the MOS pull-up
3. On-chip supporting modules are initialized, so these pins revert to I/O ports according to the
4. I/O port: Direction depends on the data direction (DDR) bit. Note that these pins may also be
See section 5, “I/O Ports” for further information.
0
7
6
5
2
/E
/WAIT
/Ø
– P9
– P9
on if DDR = 0 and DR = 1). Output ports hold their previous output level.
DDR and DR bits.
used by the on-chip supporting modules.
3
0
,
,
MCU
mode
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
Reset
E clock
output
3-State
3-State
Clock
output
3-State
High
3-State
3-State
3-State
Hardware
standby
3-State
3-State
3-state
3-State
338
Software
standby
Low if
DDR = 1,
3-state if
DDR = 0
Prev. state
3-State
Prev. state
High
High if
DDR = 1,
3-state if
DDR = 0
High
Prev. state
Prev. state
Sleep
mode
E clock if
DDR = 1,
3-state if
DDR = 0
Prev. state
3-State
Prev. state
Clock
output
Clock output Clock output
if DDR = 1, if DDR = 1,
3-state if
DDR = 0
High
Prev. state
Prev. state
DDR = 1,
DDR = 0
I/O port
output
DDR = 0
AS, WR,
RD
Normal
operation
E clock if
3-state if
I/O port
WAIT
Clock
input port if
I/O port
I/O port