參數(shù)資料
型號: MC68HC08LT8CFGE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 1.40 MM THICKNESS, 0.80 MM PITCH, ROHS COMPLIANT, MS-026BCB, LQFP-44
文件頁數(shù): 56/156頁
文件大?。?/td> 1107K
代理商: MC68HC08LT8CFGE
Oscillator Characteristics
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
149
Figure 16-1. RST and IRQ Timing
16.11 Oscillator Characteristics
16.12 Timer Interface Module Characteristics
Table 16-10. Oscillator Specifications
Characteristic
Symbol
Min
Typ
Max
Unit
Oscillator 1 on OSC1 and OSC2 (for system bus)
External reference clock to OSC1 (1)
1. No more than 10% duty cycle deviation from 50%.
fOSC
dc
16M
Hz
Crystal reference frequency (2)
2. Use fundamental mode only, do not use overtone crystals or overtone ceramic resonators.
fXTALCLK1
1M
16M
Hz
Crystal load capacitance (3)
3. Consult crystal vendor data sheet.
CL
———
Crystal fixed capacitance (3)
C1
18
—pF
Crystal tuning capacitance (3)
C2
18
—pF
Feedback bias resistor
RB1
—4.7
M
Series resistor
RS1
—0—
k
Oscillator 2 on XTAL1 and XTAL2 (for LCD and PPI)
Crystal reference frequency (2)
fXTALCLK2
32.768k
Hz
Crystal load capacitance (3)
CL
———
Crystal fixed capacitance (3)
C3
—10—
pF
Crystal tuning capacitance (3)
C4
—10—
pF
Feedback bias resistor
RB2
—10—
M
Series resistor
RS2
—10—
k
Table 16-11. Timer Interface Module Characteristics
Characteristic
Symbol
Min
Max
Unit
Input capture pulse width
tTIH, tTIL
1/fOP
RST
IRQ
tRL
tILIH
tILIL
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