參數資料
型號: UPD754302GS(A)-XXX
廠商: NEC Corp.
英文描述: 4-Bit Microcontroller
中文描述: 4位微控制器
文件頁數: 21/74頁
文件大?。?/td> 316K
代理商: UPD754302GS(A)-XXX
μ
PD754302, 754304, 754302(A), 754304(A)
21
Note
Instruction execution
Remarks 1.
f
X
= System clock frequency
Φ
= CPU clock
PCC: Processor Clock Control Register
One clock cycle (t
CY
) of the CPU clock is equal to one machine cycle of the instruction.
2.
3.
4.
X1
X2
f
X
System
clock oscillator
4
HALT
Note
STOP
Note
PCC0
PCC1
PCC2
PCC3
PCC2,
PCC3
Clear
STOP F/F
Q
S
R
Oscillation
stop
HALT F/F
S
R
Wait signal from BT
RESET signal
Standby release signal from
interrupt control circuit
· CPU
· INT0 noise eliminator
· Clock output circuit
Φ
1/4
Divider
1/1 to 1/4096
Divider
1/2 1/4
1/16
· Basic interval timer (BT)
· Timer/event counters 0, 1
· Serial interface
· INT0 noise eliminator
· Clock output circuit
PCC
Q
Selector
I
6.2 Clock Generator
Clock generator configuration
The clock generator provides the clock signals to the CPU and peripheral hardware and its configuration
is shown in Figure 6-1.
The operation of the clock generator is set with the processor clock control register (PCC).
The instruction execution time can be changed.
0.95, 1.91, 3.81, 15.3
μ
s (system clock operating at 4.19 MHz)
0.67, 1.33, 2.67, 10.7
μ
s (system clock operating at 6.0 MHz)
Figure 6-1. Clock Generator Block Diagram
相關PDF資料
PDF描述
UPD754302GS-XXX 4-Bit Microcontroller
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UPD754304GS-XXX 4-Bit Microcontroller
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