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參數(shù)資料
| 型號： | M34250 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | Single Chip 4 Bits CMOS Microcomputer(4位單片機) |
| 中文描述： | 4位單片微機的CMOS（4位單片機） |
| 文件頁數(shù)： | 21/58頁 |
| 文件大?。?/td> | 331K |
| 代理商： | M34250 |
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MITSUBISHI
ELECTRIC
21
MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
The 4250 Group timer consists of the following circuits.
Prescaler : frequency divider
Timer 1 : 8-bit programmable timer with the interrupt function
These timers can be controlled with the timer control register V1
and key-on wakeup control register K0.
Each function is described below.
Table 9 Function related timers
Circuit
Prescaler
Timer 1
Structure
Frequency divider
8-bit programmable
binary down counter
Count source
Instruction clock
Prescaler output (ORCLK)
Frequency
dividing ratio
4, 512
1 to 256
Use of output signal
Timer 1 count source
T
OUT
pin
Timer 1 interrupt
Fig. 19 Timers structure
Control
register
V1
K0
V1
Count source is stopped by clearing to “0.”
Data is automatically set from a reload register
when timer 1 underflows (auto-reload function).
Timer 1 reload register R 1(8)
inT1AB
Timer 1 (8)
Register B(4)
TAB1 instruction
T1F
Timer 1
interrupt
Register A(4)
TAB1
instruction
Bit 7
Bit 0
1/2
1
0
V1
3
G
1
output
G
1
/T
OUT
G
1
input
Instruction clock
X
IN
ORCLK
1/4
1/512
V1
2
0
1
0
1
K0
3
Prescaler
1
0
V1
2
(Note)
Timer 1 underflow
signal
Internal clock
generating circuit
(divided by 4)
Note:
:
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| M34250E2FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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| M34250M2-066FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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