4570 Datasheet, PDF (7/69 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

PORT BLOCK DIAGRAMS
MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Key-on wakeup
input
IAP0 instruction
Register A
(Note 2) _Ai
DQ
OP0A instruction ^T
Key-on wakeup
input
IAP1 instruction
Register A
(Note 2) Ai
DQ
OP1A instruction ^T
Pull-up
transistor (Note 1)
P00–P03
IAP2 instruction
Register A
Pull-up
transistor (Note 1)
Key-on wakeup
input
External interrupt circuit
IAP2 instruction
Register A
P10–P13
Key-on wakeup
input
Register A
K00
IAP4 instruction
Pull-up
transistor ^{(Note 1)}
PU00
P40
Register A
IAP3 instruction
(Note 2) Ai
DQ
OP3A
T
instruction
P20
(Note 1)
P21/INT
(Note 1)
P30–P33
(Note 1)
Key-on wakeup
input
Register A
K01
IAP4 instruction
Key-on wakeup
input
Register A
K02
IAP4 instruction
Register Y
Pull-up
transistor (Note 1)
PU01
P41
SD instruction
RD instruction
Decoder
CLD
instruction
Register Y
Decoder
Pull-up
transistor (Note 1)
PU02
SD instruction
CLD
instruction
RD instruction
Timer 2 underflow signal output
P42
S
RQ
S
RQ
1/2
W22
0
1
D0–D8
(Note 1)
D9/TOUT
(Note 1)
Key-on wakeup
input
Register A
K03
IAP4 instruction
Pull-up
transistor (Note 1)
PU03
P43
Notes 1.
This symbol represents a parasitic diode.
Applied potential to ports P2 0 and P21 must be VDD or less.
2. i represents 0, 1, 2 or 3.
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