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參數(shù)資料
| 型號： | M34286G2-XXXGP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20 |
| 文件頁數(shù)： | 5/30頁 |
| 文件大?。?/td> | 516K |
| 代理商： | M34286G2-XXXGP |
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Rev.1.00
Aug 06, 2008
page 11 of 64
REJ03B0251-0100
4286 Group
Fig. 12 Auto-reload function
TIMERS
The 4286 Group has the programmable timer.
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 1
underflow flag is set to “1,” new data is loaded from the reload
register, and count continues (auto-reload function).
FF16
n
0016
n: Counter initial value
Count starts
Reload
1st underflow
2nd underflow
n+1 count
Time
A skip instruction is executed
Timer 1 underflow flag
The
contents
of
counter
“1”
“0”
The 4286 Group timer consists of the following circuit.
Timer 1 : 8-bit programmable timer
Timer 2 : 8-bit programmable timer
These timers can be controlled with the timer control registers
V1 and V2.
Each timer function is described below.
Table 3 Function related timer
Circuit
Timer 1
Timer 2
14-bit timer
Structure
8-bit programmable
binary down counter
8-bit programmable
binary down counter
14-bit fixed frequency
Count source
Carrier wave output (CARRY)
Bit 5 of watchdog timer
f(XIN)
f(XIN)/2
Instruction clock
Frequency
dividing ratio
1 to 256
16384
Use of output signal
Carrier wave output control
Carrier wave output
Watchdog timer
Timer 1 count source
Control
register
V1
V2
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| M34286G2GP | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20 |
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| M34502M2-XXXFP | 4-BIT, MROM, 4.4 MHz, MICROCONTROLLER, PDSO24 |
| M34506M4-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO20 |
| M34506M2-XXXFP | 4-BIT, MROM, MICROCONTROLLER, PDSO20 |
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| M3429 SL002 | 制造商:Alpha Wire Company 功能描述:CBL 15PR 24AWG SLT 500' |
| M3429 SL005 | 制造商:Alpha Wire Company 功能描述:CBL 15PR 24AWG SLT 100' |
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| M342-SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
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