參數(shù)資料
型號： MC68C912B32FU8
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 16-Bit Microcontroller
中文描述： 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁數(shù)： 58/128頁
文件大?。?/td> 748K
代理商： MC68C912B32FU8
MOTOROLA
58
MC68HC912B32
MC68HC912B32TS/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 2
13
,
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
5V
+/
10
%
3V
+/
10
%
Range
2-20
μ
S
5-100
μ
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
0
0
0
0
0
0
0
Table 20 Real-Time Interrupt Rates
RTR2
RTR1
RTR0
Divide E By:
Time-Out Period
E = 4.0 MHz
OFF
2.048 ms
Time-Out Period
E = 8.0 MHz
OFF
1.024 ms
0
0
0
0
0
1
OFF
2
13
2
14
2
15
2
16
2
17
2
18
2
19
0
1
0
4.096 ms
2.048 ms
0
1
1
8.196 ms
4.096 ms
1
0
0
16.384 ms
8.196 ms
1
0
1
32.768 ms
16.384 ms
1
1
0
65.536 ms
32.768 ms
1
1
1
131.72 ms
65.536 ms
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PDF描述
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