参数资料
型号: MC68HC11C0FN3
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 3 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 47/76页
文件大小: 394K
代理商: MC68HC11C0FN3
MC68HC11C0
MOTOROLA
MC68HC11C0TS/D
51
Bit 7 — Not implemented
Always reads zero
PAEN — Pulse Accumulator System Enable
0 = Pulse accumulator disabled
1 = Pulse accumulator enabled
PAMOD — Pulse Accumulator Mode
0 = Event counter
1 = Gated time accumulation
PEDGE — Pulse Accumulator Edge Control
Bit 3 — Not implemented
Always reads zero
I4/O5 — Input Capture 4/Output Compare 5
Refer to 7 Main Timer.
RTR[1:0] — Real-Time Interrupt Rate
These two bits select the rate for periodic interrupts. Refer to the following table.
Can be read and written, unaffected by reset.
PACTL — Pulse Accumulator Control
$0026
Bit 7
654321
Bit 0
PAEN
PAMOD
PEDGE
I4/O5
RTR1
RTR0
RESET:
00000000
PAMOD
PEDGE
Action on Clock
0
PAI Falling Edge Increments the Counter.
0
1
PAI Rising Edge Increments the Counter.
1
0
A Zero on PAI Inhibits Counting.
1
A One on PAI Inhibits Counting.
Table 11 Real-Time Interrupt Rates
RTR[1:0]
Divide E Into
XTAL = 4.0 MHz
XTAL = 8.0 MHz
XTAL = 12.0 MHz
0 0
213
8.19 ms
4.096 ms
2.731 ms
0 1
214
16.38 ms
8.192 ms
5.461 ms
1 0
215
32.77 ms
16.384 ms
10.923 ms
1 1
216
65.54 ms
32.768 ms
21.845 ms
E =
1.0 MHz
2.0 MHz
3.0 MHz
PACNT — Pulse Accumulator Counter
$0027
Bit 7
654321
Bit 0
Bit 7
654321
Bit 0
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