參數資料
型號: MC68HC05J1AVP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP20
封裝: PLASTIC, DIP-20
文件頁數: 47/128頁
文件大?。?/td> 1279K
代理商: MC68HC05J1AVP
General Description
Pin Assignments
MC68HC05J1A — Rev. 3.0
Technical Data
MOTOROLA
General Description
25
1.6.2.3 RC Oscillator
For maximum cost reduction, the RC oscillator mask option allows the
configuration shown in Figure 1-8 to drive the on-chip oscillator. The
OSC2 signal is a square wave, and the signal on OSC1 is a triangular
wave. The optimum frequency for the RC oscillator configuration is
2 MHz. Mount the RC components as close as possible to the pins for
startup stabilization and to minimize output distortion.
Figure 1-8. RC Oscillator Connections
1.6.2.4 External Clock
With the RC oscillator mask option, an external clock from another
CMOS-compatible device can drive the OSC1 input. Leave the OSC2
pin unconnected, as Figure 1-9 shows.
Figure 1-9. External Clock Connections
MCU
VDD
VSS
C1
C2
OSC1
OSC2
R
OS
C
1
OSC
2
R
MCU
OSC
1
OSC
2
EXTERNAL
CMOS CLOCK
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