參數(shù)資料
型號： HCD40C4344R
廠商： Hitachi,Ltd.
英文描述： 4-bit HMCS400-series microcomputer(4位單片微計算機)
中文描述： 4位HMCS400系列微電腦（4位單片微計算機）
文件頁數(shù)： 39/100頁
文件大小： 610K
代理商： HCD40C4344R
HD404344R Series/HD404394 Series
39
Oscillator Circuit
Figure 17 shows a block diagram of the clock generation circuit. Ceramic oscillator can be connected to
OSC
1
and OSC
2
as listed in table 16. An external clock can also be connected. In addition, the system
oscillator of the HD404344R Series is capable of CR oscillation.
OSC
2
OSC
1
System
oscillator
1/4
division
circuit
Timing
generator
circuit
System
clock
generation
CPU with ROM,
RAM, registers,
flags, and I/O
Peripheral
function
interrupt
f
cyc
t
cyc
f
OSC
CPU
PER
Figure 17 Clock Generation Circuit
R2
3
OSC
1
OSC
2
GND
: GND
Figure 18 Typical Layout of Ceramic Oscillator
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