參數(shù)資料
型號: MC68HLC705KJ1C
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 44/144頁
文件大?。?/td> 1575K
代理商: MC68HLC705KJ1C
Technical Data
MC68HC705KJ1MC68HRC705KJ1MC68HLC705KJ1 — Rev. 3.0
138
MC68HRC705KJ1
MOTOROLA
MC68HRC705KJ1
A.5 RC Oscillator Connections (No External Resistor)
For maximum cost reduction, the RC oscillator mask connections shown
in Figure A-3 allow the on-chip oscillator to be driven with no external
components. This can be accomplished by programming the oscillator
internal resistor (OSCRES) bit in the mask option register to a logic 1.
When programming the OSCRES bit for the MC68HRC705KJ1, an
internal resistor is selected which yields typical internal oscillator
frequencies as shown in Figure A-4. The internal resistance for this
device is different than the resistance of the selectable internal resistor
on the MC68HC705KJ1 and the MC68HRC705KJ1 devices.
Figure A-3. RC Oscillator Connections (No External Resistor)
MCU
VDD
VSS
C1
C2
OSC1
OSC2
OSC
1
OS
C
2
R
(EXTERNAL CONNECTIONS LEFT OPEN)
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