参数资料
型号: MC68HCL05C9AFB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 79/160页
文件大小: 4128K
代理商: MC68HCL05C9AFB
General Description
Functional Pin Descriptions
MC68HC05C9A Rev. 4.0
General Release Specification
General Description
NON-DISCLOSURE
AGREEMENT
REQUIRED
1.6.3 OSC1 andOSC2
These pins provide control input for an on-chip clock oscillator circuit. A
crystal or ceramic resonator connected to these pins provides a system
clock. The internal frequency is one-half the crystal frequency.
1.6.4 RESET
As an input pin, this active low RESET pin is used to reset the MCU to a
known startup state by pulling RESET low. As an output pin, the RESET
pin indicates that an internal MCU reset has occurred. The RESET pin
contains an internal Schmitt trigger as part of its input to improve noise
immunity. Refer to Section 5. Resets for more detail.
1.6.5 TCAP
This pin controls the input capture feature for the on-chip programmable
timer. The TCAP pin contains an internal Schmitt trigger as part of its
input to improve noise immunity. Refer to Section 8. Capture/Compare
Timer for more detail.
1.6.6 TCMP
The TCMP pin provides an output for the output compare feature of the
on-chip programmable timer. Refer to Section 8. Capture/Compare
Timer for more detail.
1.6.7 PA0–PA7
These eight I/O lines comprise port A. The state of each pin is software
programmable and all port A pins are configured as inputs during reset.
Refer to Section 7. Input/Output Ports for more detail.
1.6.8 PB0–PB7
These eight I/O lines comprise port B. The state of each pin is software
programmable and all port B pins are configured as inputs during reset.
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For More Information On This Product,
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