参数资料
型号: M38514E6SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CDIP42
封装: 0.600 INCH, 1.78 MM PITCH, WINDOWED, CERAMIC, DIP-42
文件页数: 14/91页
文件大小: 1161K
代理商: M38514E6SS
Rev.1.01
Oct 15, 2003
page 21 of 89
3851 Group (Built-in 24 KB or more ROM)
Fig. 17 Block diagram of timer X, timer Y, timer 1, and timer 2
Q
“1”
“0”
P27/CNTR0/SRDY1
Q
P40/CNTR1
“0”
“1”
R
“1”
“0”
“1”
T
Prescaler X latch (8)
Prescaler X (8)
Timer X latch (8)
Timer X (8)
To timer X interrupt
request bit
Toggle flip-flop
Timer X count stop bit
Pulse width
measurement
mode
Event
counter
mode
To CNTR0 interrupt
request bit
Pulse output mode
Port P27
latch
Port P27
direction register
CNTR0 active
edge selection
bit
Timer X latch write pulse
Pulse output mode
Timer mode
Pulse output mode
Prescaler Y latch (8)
Prescaler Y (8)
Timer Y latch (8)
Timer Y (8)
To timer Y interrupt
request bit
Toggle flip-flop
Timer Y count stop bit
To CNTR1 interrupt
request bit
Pulse output mode
Port P40
latch
Port P40
direction register
CNTR1 active
edge selection
bit
Timer Y latch write pulse
Pulse output mode
Timer mode
Pulse output mode
Data bus
Prescaler 12 latch (8)
Prescaler 12 (8)
Timer 1 latch (8)
Timer 1 (8)
Data bus
Timer 2 latch (8)
Timer 2 (8)
To timer 2 interrupt
request bit
To timer 1 interrupt
request bit
CNTR0 active edge
selection bit
CNTR1 active edge
selection bit
Pulse width
measure-
ment mode
Event
counter
mode
f(XCIN)
Timer 12 count source selection bit
f(XIN)/16
f(XIN)/2
Timer Y count source selection bit
f(XIN)/16
f(XIN)/2
Timer X count source selection bit
f(XIN)/16
(f(XCIN)/16 at low-speed mode)
(f(XCIN)/2 at low-speed mode)
(f(XCIN)/16 at low-speed mode)
(f(XCIN)/2 at low-speed mode)
(f(XCIN)/16 at low-speed mode)
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