參數(shù)資料
型號(hào): HMS87C1304A
廠商: Hynix Semiconductor Inc.
英文描述: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
中文描述: CMOS單芯片8位微控制器
文件頁(yè)數(shù): 34/70頁(yè)
文件大小: 977K
代理商: HMS87C1304A
HMS87C1304A/HMS87C1302A
HYUNDAI MicroElectronics
34
Preliminary
Jan. 2001
tions
. The RC oscillator frequency is a function of the sup-
ply voltage, the external resistor (Rext) and capacitor
(Cext) values, and the operating temperature.
The user needs to take into account variation due to toler-
ance of external R and C components used. Figure 10-4
shows how the RC combination is connected to the
HMS87C1304A or HMS87C1302A.
Figure 10-4 RC Oscillator Connections
The oscillator frequency, divided by 4, is output from the
Xout pin, and can be used for test purpose or to synchroze
other logic.
To set the RC oscillation, it should be programmed
RCOPT bit to "1" to CONFIG (0FF0
H
). ( Refer to DE-
VICE CONFIGURATION AREA )
Xout
Xin
Vdd
Cext
fxin
÷
4
Rext
Preimnary
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