參數(shù)資料
型號(hào)： UPD750004GBA-XXX-3BS-MTX
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP44
封裝： 10 X 10 MM, 0.80 MM PITCH, PLASTIC, QFP-44
文件頁(yè)數(shù)： 17/86頁(yè)
文件大?。?/td> 626K
代理商： UPD750004GBA-XXX-3BS-MTX
PD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)
22
Data Sheet U10738EJ3V2DS
Fig. 6-1
Clock Generator Block Diagram
Note Instruction execution
Remarks 1. fX = Main system clock frequency
2. fXT = Subsystem clock frequency
3.
Φ = CPU clock
4. PCC: Processor clock control register
5. SCC: System clock control register
6. One clock cycle (tCY) of the CPU clock (
Φ) is equal to one machine cycle of an instruction.
Subsystem
clock generator
Main system
clock generator
Clock timer
Basic interval timer (BT)
Timer/event counter
Timer counter
Serial interface
Clock timer
INT0 noise eliminator
Clock output circuit
1/1 to 1/4096
Frequency divider
Selec-
tor
Selec-
tor
Frequency
divider
Φ
Oscillator
disable
signal
Internal
bus
HALT
Note
STOP
Note
PCC2, PCC3
clear signal
Wait release signal from BT
Standby release signal from
interrupt control circuit
RESET signal
XT1
XT2
X1
X2
4
SCC
SCC3
SCC0
PCC
PCC0
PCC1
PCC2
PCC3
STOP flip-flop
QS
R
HALT flip-flop
S
Q
R
fXT
fX
1/2
1/16
1/4
WM.3
CPU
INT0 noise
eliminator
Clock
output
circuit
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