參數(shù)資料
型號(hào): UPD754244GS-XXX-GJG
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20
封裝: 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-20
文件頁(yè)數(shù): 15/90頁(yè)
文件大小: 602K
代理商: UPD754244GS-XXX-GJG
PD754144, 754244
20
Data Sheet U10040EJ2V1DS
Figure 7-1.
PD754144 (RC Oscillation) Clock Generator Block Diagram
Note
Instruction execution
Remarks 1.
fcc: System clock frequency
2.
Φ = CPU clock
3.
PCC: Processor Clock Control Register
4.
One clock cycle (tCY) of the CPU clock is equal to one machine cycle of the instruction.
CL1
CL2
System
clock
oscillator
Oscillation stops
1/1~1/4096
1/2 1/4 1/16
fcc
Divider
1/4
Φ
HALT F/F
S
RQ
S
R
Q
STOP F/F
PCC0
PCC1
PCC2
PCC3
PCC2,
PCC3
clear
HALTNote
STOPNote
Wait release signal from BT
Reset signal
Standby release signal from
interrupt control circuit
PCC
4
Basic interval timer (BT)
Timer counter
INT0 noise eliminator
CPU
INT0 noise
eliminator
Divider
Selector
Internal
bus
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