參數(shù)資料
型號: MC68HC705JB2P
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP20
封裝: PLASTIC, DIP-20
文件頁數(shù): 83/128頁
文件大?。?/td> 2493K
代理商: MC68HC705JB2P
GENERAL RELEASE SPECIFICATION
August 28, 1998
MULTI-FUNCTION TIMER
MC68HC705JB2
8-4
REV 1.1
TOFR - Timer Overow Acknowledge
The TOFR is an acknowledge bit that resets the TOF ag bit. This bit is
unaffected by reset. Reading the TOFR will always return a logical zero.
1 =
Clears the TOF ag bit.
0 =
Does not clear the TOF ag bit.
RTIFR - Real Time Interrupt Acknowledge
The RTIFR is an acknowledge bit that resets the RTIF ag bit. This bit is
unaffected by reset. Reading the RTIFR will always return a logical zero.
1 =
Clears the RTIF ag bit.
0 =
Does not clear the RTIF ag bit.
RT1, RT0 - Real Time Interrupt period select bits
These two bits select one of the four real time interrupt periods.
8.2
OPERATION DURING STOP MODE
When STOP is exited by an external interrupt or an LVR reset or an external
RESET, the internal oscillator will resume, followed by a 128 or 4064 internal
processor oscillator stabilization delay.
Bus Frequency, fBUS=fOP=3.0 MHz
RT1
RT0
Divide Ratio
RTI Rate
00
214
5.46ms
01
215
10.92ms
10
216
21.85ms
11
217
43.69ms
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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PDF描述
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相關代理商/技術(shù)參數(shù)
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