參數(shù)資料
型號(hào)： M34514M8-759FP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述： 單芯片4位微機(jī)的CMOS
文件頁(yè)數(shù)： 27/106頁(yè)
文件大?。?/td> 1304K
代理商： M34514M8-759FP
27
4513/4514 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
TIMERS
The 4513/4514 Group has the programmable timers.
Programmable timer
The programmable timer has a reload register and enables the
frequency dividing ratio to be set. It is decremented from a setting
value n. When it underflows (count to n + 1), a timer interrupt re-
quest flag is set to “1,” new data is loaded from the reload
register, and count continues (auto-reload function).
Fixed dividing frequency timer
The fixed dividing frequency timer has the fixed frequency divid-
ing ratio (n). An interrupt request flag is set to “1” after every n
count of a count pulse.
Fig. 18 Auto-reload function
FF
16
n
00
16
n : Counter initial value
Count starts
Reload
Reload
1st underflow
2nd underflow
n+1 count
n+1 count
Time
An interrupt occurs or
a skip instruction is executed.
Timer interrupt
request flag
T
“1”
“0”
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