參數(shù)資料
型號(hào): UPD780032AYCW
廠(chǎng)商: NEC Corp.
元件分類(lèi): 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁(yè)數(shù): 23/70頁(yè)
文件大小: 527K
代理商: UPD780032AYCW
23
μ
PD780031AY, 780032AY, 780033AY, 780034AY
Data Sheet U14045EJ1V0DS00
5.4 Clock Output/Buzzer Output Control Circuit
A clock output/buzzer output control circuit (CKU) is incorporated.
Clocks with the following frequencies can be output as clock output.
65.5 kHz/131 kHz/262 kHz/524 kHz/1.05 MHz/2.10 MHz/4.19 MHz/8.38 MHz (@ 8.38-MHz operation with main
system clock)
32.768 kHz (@ 32.768-kHz operation with subsystem clock)
Clocks with the following frequencies can be output as buzzer output.
1.02 kHz/2.05 kHz/4.10 kHz/8.19 kHz (@ 8.38-MHz operation with main system clock)
Figure 5-7. Block Diagram of Clock Output/Buzzer Output Control Circuit CKU
Prescaler
f
X
f
XT
8
Clock
control
circuit
PCL/P74
BUZ/P75
4
f
X
to f
X
/2
7
f
X
/2
10
to f
X
/2
13
S
BCS0, BCS1
BZOE
CLOE
BZOE
BCS1
BCS0
CLOE
CCS3
CCS2
CCS1
CCS0
Internal bus
Clock output select register (CKS)
S
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