M34282E2GP MITSUBISHI [Mitsubishi Electric Semiconductor], M34282E2GP Datasheet - Page 11

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

Fig. 13 Timers structure
CARRY
X
Initializing signal
IN
CCK instruction
INSTCK
V1
X
Timer 1 underflow signal
0
1
IN
1
RCAR instruction
SCAR instruction
(Note 3)
1/2
(TAB1)
V1
0
1
0
(Note 1)
V2
WRST instruction
S
R
Initializing signal
0
1
1
Frequency divider
(divided by 8)
Initializing signal (Note 4)
Q
14-bit timer (WDT)
0
V2
(TAB2)
Register B
Reload register R1 (8)
CAR flag
0 (Note 1)
Synchronous
circuit
V1
0
1
(Note 4)
(T1AB)
S Q
R
2
Timer 1 (8)
(Note 3)
5
(Note 2)
Register B
Register A
Register B
Reload register R2H (8)
Reload register R2L (8)
V2
(T2R2L)
(T2AB)
13
3
Timer 2(8)
D
T
(T2HAB)
(T2AB)
Q
R
Register A
Register A
WDF1 WDF2
V1
(TAB1)
MITSUBISHI
ELECTRIC
CARRY
(to timer 1)
0
Reload control circuit
STCK (System clock)
Carrier wave output control signal
Frequency divider
(divided by 4)
SNZT1 instruction
(TAB2)
Notes 1: Counting is stopped by clearing to “0.”
T1F
2: When the T1AB instruction is executed after V1
3: The data of reload register R2L set with the T2AB instruction
4: The initializing signal is output at reset or RAM back-up mode.
Timer 1 underflow signal
(to port CARR)
T
writing is performed only to reload register R1.
can be also written to timer 2 with the T2R2L instruction.
V2
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
R
2
Q
System reset
SNZT2
instruction
Port CARR
T2F
T2F
INSTCK
(Instruction clock)
MITSUBISHI MICROCOMPUTERS
CARRYD
(to port CARR)
4282 Group
0
is set to “1,”
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