參數(shù)資料
型號: MC68HC05CL48
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 1.802 MHz, MICROCONTROLLER, PQFP112
封裝: TQFP-112
文件頁數(shù): 57/145頁
文件大小: 673K
代理商: MC68HC05CL48
June 11, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05CL48
GENERAL DESCRIPTION
MOTOROLA
REV 2.0
1-7
Figure 1-4. Oscillator Connections
1.4.6 External Clock
An external clock from another CMOS-compatible device can be connected to the
OSC1 input, with the OSC2 input not connected, as shown in Figure 1-4 (b)
1.4.7 PTA0-PTA7
These I/O lines comprise Port A. The state of any pin is software programmable
and all port lines are congured as inputs during power-on or reset. PTA0-PTA7
are also associated with three external IRQ and ve Keyboard interrupt functions.
See Section 7 for more details on the I/O ports.
1.4.8 PTB0-PTB7
These I/O lines comprise Port B. The state of any pin is software programmable
and all port lines are congured as inputs during power-on or reset.
1.4.9 PTC0-PTC7
These I/O lines comprise Port C. The state of any pin is software programmable
and all port lines are congured as inputs during power-on or reset. PTC0-PTC7
To VDD (or STOP)
(b)
External Clock Source
Connections
MCU
OSC1
OSC2
unconnected
External Clock
To VDD (or STOP)
(a)
Crystal or Ceramic Resonator
Connections
X-tal = Nitsuko EX-0228-0150-NTK
OSC1
OSC2
MCU
: Additional capacitance may be required for Ceramic Resonator option. Follow the
Ceramic Resonator manufacturer’s recommendations.
10M
100k
27pF
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