MC68HC912B32MFU8 MOTOROLA [Motorola, Inc], MC68HC912B32MFU8 Datasheet - Page 58

• Manufacturer Part Number: MC68HC912B32MFU8
• Description: 16-Bit Microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

10.5 Clock Function Registers
RTICTL — Real-Time Interrupt Control Register
RTIE — Real-Time Interrupt Enable
RSWAI — RTI and COP Stop While in Wait
RSBCK — RTI and COP Stop While in Background Debug Mode
RTBYP — Real-Time Interrupt Divider Chain Bypass
RTR2, RTR1, RTR0 — Real-Time Interrupt Rate Select
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MOTOROLA
RESET:
All register addresses shown reflect the reset state. Registers may be mapped to any 2-Kbyte space.
Read and write anytime.
Write once in normal modes, anytime in special modes. Read anytime.
Write once in normal modes, anytime in special modes. Read anytime.
Write not allowed in normal modes, anytime in special modes. Read anytime.
Read and write anytime.
Rate select for real-time interrupt. The clock used for this module is the E clock.
0 = Interrupt requests from RTI are disabled.
1 = Interrupt will be requested whenever RTIF is set.
0 = Allows the RTI and COP to continue running in wait.
1 = Disables both the RTI and COP whenever the part goes into wait.
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
0 = Divider chain functions normally.
1 = Divider chain is bypassed, allows faster testing (the divider chain is normally P divided by 2
emulation.
when bypassed becomes P divided by 4).
RTR2
RTIE
Bit 7
0
0
0
0
0
1
1
1
1
RTR1
RSWAI
0
0
1
1
0
0
1
1
6
0
RTR0 Divide E By:
5V
3V
0
1
0
1
0
1
0
1
Supply
RSBCK
Table 20 Real-Time Interrupt Rates
Table 19 Clock Monitor Time-Outs
5
0
10
10
OFF
2
2
2
2
2
2
2
13
14
15
16
17
18
19
4
0
0
Time-Out Period
RTBYP
E = 4.0 MHz
16.384 ms
32.768 ms
65.536 ms
131.72 ms
2.048 ms
4.096 ms
8.196 ms
3
0
OFF
5-100 S
2-20 S
Range
RTR2
2
0
Time-Out Period
RTR1
E = 8.0 MHz
16.384 ms
32.768 ms
65.536 ms
1.024 ms
2.048 ms
4.096 ms
8.196 ms
1
0
OFF
MC68HC912B32TS/D
RTR0
Bit 0
MC68HC912B32
0
$0014
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