HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 476

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Table E-1 Port State (cont)
H:
L:
T:
keep: Input ports are in the high-impedance state. Output ports hold their previous output values.
*1 The on-chip supporting modules are reset, so P1
*2 The on-chip supporting modules are reset, so these pins become input or output ports controlled
*3 BREQ can be received. BACK is High.
*4 BACK is Low.
*5 Address outputs are Low. Input ports are in the high-impedance state, or the MOS pull-ups are
*6 Pins used as input ports with the MOS pull-up on (DDR = 0, DR = 1) do not go to the high-
Port
Pin Name
P6
A
P7
P8
P9
19
3
7
7
7
DDR and DR. If P1
by DDR and DR.
on.
impedance state. The MOS pull-up remains on.
to A
to P6
to P7
to P8
to P9
High logic level
Low logic level
High-Impedance state
If DDR = 0 and DR = 1 in ports 5 and 6, the MOS pull-ups remain on.
16
0
0
0
0
Mode Reset
1
2
3
4
7
1
2
3
4
7
1
2
3
4
7
1
2
3
4
7
2
T
L
T
T
T
T
is programmed for BACK output, it goes to the high-impedance state.
Hardware
Standby
Mode
T
T
T
T
Software
Standby Mode Sleep Mode
T
T
keep
keep
T
keep
keep
*6
*2
*2
466
7
becomes an input or output port controlled by
L
*5
keep
keep
T
keep
keep
Bus
Release Mode State (Normal Operation)
T
T
——
keep
T
keep
keep
*6
Program Execution
A
Address bus or input port
Input/output port
Input/output port
Input port
Input/output port
Input/output port
19
to A
16