參數(shù)資料
型號(hào)： M34570M4-214FP
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)： 20/68頁(yè)
文件大?。?/td> 319K
代理商： M34570M4-214FP
20
MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
The 4570 Group timer consists of the following circuits.
Prescaler : frequency divider
Timer 1 : 10-bit programmable timer with the interrupt function
and the carrier wave output auto-control function
Timer 2 : 8-bit programmable timer with the interrupt function
Timer 3 : 8-bit programmable timer with the interrupt function
and the carrier wave generation function
16-bit timer
Prescaler, timer 1, timer 2 and timer 3 can be controlled with the
timer control registers W1, W2 and W3.
16-bit timer is the free-run counter without the control register.
Each function is described below.
Table 9 Function related timers
Count source
Instruction clock
Prescaler output (ORCLK)
Carrier wave generating circuit
output (CARRY)
Prescaler output (ORCLK)
Timer 1 underflow
Instruction clock
16-bit timer underflow
Prescaler output (ORCLK)
Timer 2 underflow
f(X
IN
) or f(X
IN
)/2
Instruction clock
Structure
Frequency divider
10-bit programmable
binary down counter
8-bit programmable
binary down counter
8-bit programmable
binary down counter
16-bit fixed
dividing frequency
Circuit
Prescaler
Timer 1
Timer 2
Timer 3
16-bit timer
Use of output signal
Timer 1, 2 and 3 count sources
Timer 1 interrupt
Carrier wave output auto-control
Timer 2 count source
Timer 2 interrupt
Timer 3 count source
T
OUT
output
Timer 3 interrupt
Timer 1 count source
Carrier wave
Watchdog timer
(15-th bit output is counted
twice.)
Timer 2 count source
(16-bit timer underflow)
Frequency
dividing ratio
4, 8
1 to 1024
1 to 256
1 to 256
65536
Control
register
W1
W1
(W5)
W2
W3
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