参数资料
型号: MC68HC11D3CFN3
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, LCC-44
文件页数: 4/138页
文件大小: 1047K
代理商: MC68HC11D3CFN3
Pulse Accumulator
MC68HC711D3 Data Sheet, Rev. 2.1
Freescale Semiconductor
101
Figure 8-19. Pulse Accumulator
Table 8-7. Pulse Accumulator Timing in Gated Mode
Selected
Crystal
Common XTAL Frequencies
4.0 MHz
8.0 MHz
12.0 MHz
CPU Clock
(E)
1.0 MHz
2.0 MHz
3.0 MHz
Cycle Time
(1/E)
1000 ns
500 ns
333 ns
(E/26)
(E/214)
1 count -
overflow -
64.0 s
16.384 ms
32.0 s
8.192 ms
21.33 s
5.461 ms
PACNT
8-BIT COUNTER
2:1
MUX
PA7/
ENABLE
OVERFLOW
1
2
INTERRUPT
REQUESTS
INTERNAL
DATA BUS
INPUT BUFFER
AND
EDGE DETECTION
PACTL CONTROL
TFLG2 INTERRUPT STATUS
TMSK2 INT ENABLES
PAOVI
PAII
DD
RA7
PA
EN
PA
MOD
PE
DGE
PAOVF
PAIF
OUTPUT
BUFFER
PAI EDGE
PAEN
E ÷ 64 CLOCK
(FROM MAIN TIMER)
PAI/OC1
FROM
MAIN TIMER
OC1
DISABLE
FLAG SETTING
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