參數(shù)資料
型號： MC68HC912BL16CFU8
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封裝： QFP-64
文件頁數(shù)： 86/128頁
文件大小： 3326K
代理商： MC68HC912BL16CFU8
MC68HC912BL16
60
MC68HC912BL16TS/D
10.5 Clock Function Registers
All register addresses shown reflect the reset state. Registers may be mapped to any 2-Kbyte space.
RTIE — Real-Time Interrupt Enable
Read and write anytime.
0 = Interrupt requests from RTI are disabled.
1 = Interrupt will be requested whenever RTIF is set.
RSWAI — RTI and COP Stop While in Wait
Write once in normal modes, anytime in special modes. Read anytime.
0 = Allows the RTI and COP to continue running in wait.
1 = Disables both the RTI and COP whenever the part goes into wait.
RSBCK — RTI and COP Stop While in Background Debug Mode
Write once in normal modes, anytime in special modes. Read anytime.
0 = Allows the RTI and COP to continue running while in background mode.
1 = Disables both the RTI and COP whenever the part is in background mode. This is useful for
emulation.
RTBYP — Real-Time Interrupt Divider Chain Bypass
Write not allowed in normal modes, anytime in special modes. Read anytime.
0 = Divider chain functions normally.
1 = Divider chain is bypassed, allows faster testing (the divider chain is normally P divided by 213,
when bypassed becomes P divided by 4).
RTR2, RTR1, RTR0 — Real-Time Interrupt Rate Select
Read and write anytime.
Rate select for real-time interrupt. The clock used for this module is the E clock.
Table 19 Clock Monitor Time-Outs
Supply
Range
5V
+/ 10%
2-20
S
3V
+/ 10%
5-100
S
RTICTL — Real-Time Interrupt Control Register
$0014
Bit 7
6
5
4
3
2
1
Bit 0
RTIE
RSWAI
RSBCK
0
RTBYP
RTR2
RTR1
RTR0
RESET:
0
Table 20 Real-Time Interrupt Rates
RTR2
RTR1
RTR0
Divide E By:
Time-Out Period
E = 4.0 MHz
Time-Out Period
E = 8.0 MHz
0
OFF
0
1
213
2.048 ms
1.024 ms
0
1
0
214
4.096 ms
2.048 ms
0
1
215
8.196 ms
4.096 ms
1
0
216
16.384 ms
8.196 ms
1
0
1
217
32.768 ms
16.384 ms
1
0
218
65.536 ms
32.768 ms
1
219
131.72 ms
65.536 ms
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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