M34282E2GP MITSUBISHI [Mitsubishi Electric Semiconductor], M34282E2GP Datasheet - Page 5

• Manufacturer Part Number: M34282E2GP
• Description: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

PORT BLOCK DIAGRAMS
RD instruction
SD instruction
Register Y
Key-on wakeup input
Key-on wakeup input
Skip decision (SZD instruction)
Register A
Register A
Register A
(Note 3)
(Note 3)
RD instruction
(Note 4)
SD instruction
Key-on wakeup input
Timer 1 underflow signal
A
A
A
A
A
A
Register Y
RCAR instruction
SCAR instruction
k
k
j
j
j
CLD instruction
j
instruction
instruction
instruction
Key-on wakeup input
Decoder
Key-on wakeup
Register A
(from timer 2)
OGA
OGA
CARRYD
OEA
CLD instruction
A
2
D
T
D
T
D
T
Decoder
CAR flag
V1
Q
Q
Q
S
R
2
IAE instruction
IAG instruction
IAG instruction
Q
IAE instruction
(Note 2)
S
R
(Note 3)
Q
D
T
PU1
Q
R
PU0
PU0
PU0
S
R
i
j
2
3
V1
Q
Notes 1:
0
Pull-down
transistor
Pull-down
transistor
Pull-down transistor
Pull-down transistor
Pull-down transistor
(to timer 1)
CARRY
MITSUBISHI
ELECTRIC
2: i represents bits 0 to 3.
3: j represents bits 0, 1.
4: k represents bits 2, 3.
5: Applied voltage must be less than VDD.
Carrier wave output control signal
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
Ports D
Ports G
Ports G
Ports E
Port E
(Note 1)
Ports D
This symbol represents a parasitic diode.
Port CARR
2
4
0
2
0
(Note 5)
–D
, E
, G
, G
0
–D
7
1
3
1
(Note 5)
(Note 5)
(Note 5)
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
3
(Note 5)
MITSUBISHI MICROCOMPUTERS
4282 Group
5