M34512M2 Datasheet, PDF (6/80 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
4512 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PORT BLOCK DIAGRAMS
K 00
Key-on wakeup input
Register A
IAP0 instruction
Ai
D
OP0A instruction T ^Q
Pull-up transistor
Register A
IAP2 instruction
PU00
Synchronous clock input for serial transfer
P 0 0,P 01
J11
0
Synchronous clock
output for serial transfer
1
J10
P20/SCK
K 01
Key-on wakeup input
Register A
IAP0 instruction
Ai
D
OP0A instruction ^T Q
K02
Key-on wakeup input
IAP1 instruction
Register A
Ai
D
OP1A instruction ^{T Q}
Pull-up transistor
PU01
P 0 2,P 0 3
Register A
IAP2 instruction
J11
0
Serial data output
1
Serial data input
IAP2 instruction
Register A
Pull-up transistor
PU02
P 10,P 11
Key-on wakeup input
External interrupt circuit
P21/SOUT
P22/SIN
INT0, INT1
K0 3
Key-on wakeup input
Register A
IAP1 instruction
Ai
D
OP1A instruction T Q
Pull-up transistor
PU03
P 12,P 13
Analog input
Q1
Decoder
AIN0–AIN3
Register Y
Decoder ^{Skip decision}
(SZD instruction)
SD instruction
RD instruction
CLD instruction
S
RQ
D0–D7
•
This symbol represents a parasitic diode on the port.
• Applied potential to ports P20–P22 must be VDD.
• Applied potential to ports D0–D7 must be 12 V.
• i represents 0, 1, 2, or 3.
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