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参数资料
| 型号： | MC68HC05RC16P |
| 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, PDIP28 |
| 封装： | PLASTIC, DIP-28 |
| 文件页数： | 84/122页 |
| 文件大小： | 2962K |
| 代理商： | MC68HC05RC16P |
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Core Timer
General Release Specification
MC68HC05RC16 — Rev. 3.0
Core Timer
TOFC — Timer Overflow Flag Clear
When a one is written to this bit, CTOF is cleared. Writing a zero has
no effect on the CTOF bit. This bit always reads as zero.
RTFC — Real-Time Interrupt Flag Clear
When a one is written to this bit, RTIF is cleared. Writing a zero has
no effect on the RTIF bit. This bit always reads as zero.
RT1–RT0 — Real-Time Interrupt Rate Select
These two bits select one of four taps from the real-time interrupt
circuit. Refer to Table 8-1. Reset sets these two bits which selects the
lowest periodic rate and gives the maximum time in which to alter
these bits if necessary. Care should be taken when altering RT0 and
RT1 if the timeout period is imminent or uncertain. If the selected tap
is modified during a cycle in which the counter is switching, an RTIF
could be missed or an additional one could be generated. To avoid
problems, the COP should be cleared before changing RTI taps.
Table 8-1. RTI and COP Rates at 4.096 MHz Oscillator
RTI RATE
2.048-MHz Bus
RT1:RT0
MINIMUM COP RATES
2.048-MHz Bus
2 ms
212
÷ E
00
(215–212)/E
14 ms
4 ms
213
÷ E
01
(216–213)/E
28 ms
8 ms
214
÷ E
10
(217–214)/E
56 ms
16 ms
215
÷ E
11
(218–215)/E
112 ms
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相关代理商/技术参数 |
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| MC68HC05RC8 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:General Release Specification |
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