参数资料
型号: MC68HC05C8ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 55/156页
文件大小: 755K
代理商: MC68HC05C8ACB
NON-DISCLOSURE
AGREEMENT
REQUIRED
MC68HSC05C8A
General Release Specification
MC68HC05C8A Rev. 3.0
148
MC68HSC05C8A
MOTOROLA
B.5 4.5–5.5 V Control Timing
The data in 13.9 5.0 V Control Timing applies to the MC68HSC05C8A
with the exceptions given in the following table.
Characteristic
Symbol
Min
Max
Unit
Oscillator Frequency
Crystal
External Clock
f
OSC
dc
8.2
MHz
Internal Operating Frequency (f
OSC ÷ 2)
Crystal
External Clock
f
OP
dc
4.1
MHz
Cycle Time
tcyc
244
ns
Crystal Oscillator Startup Time
tOXOV
100
ms
Stop Recovery Startup Time
tILCH
100
ms
RESET Pulse Width
tRL
1.5
t
CYC
Timer
Resolution(1)
Input Capture Pulse Width
tRESL
tTH or tTL
tTHTL
4.0
64
(2)
tcyc
ns
tcyc
Interrupt Pulse Width Low (Edge-Triggered)
tILIH
64
ns
Interrupt Pulse Period
tILIL
(3)
—tcyc
OSC1 Pulse Width
tOH or tOL
50
ns
1.
Because a 2-bit prescaler in the timer must count four internal cycles (
tcyc), this is the limiting minimum factor in
determining the timer resolution.
2.
The minimum period tTLTL should not be less than the number of cycle times it takes to execute the capture interrupt
service routine plus 24
tcyc.
3.
The minimum tILIL should not be less than the number of cycle times it takes to execute the interrupt service routine
plus 19
tcyc.
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