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參數(shù)資料
| 型號： | M37545G2KP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO32 |
| 封裝： | 11 X 5.60 MM, 0.65 MM PITCH, PLASTIC, LSSOP-32 |
| 文件頁數(shù)： | 20/63頁 |
| 文件大小： | 774K |
| 代理商： | M37545G2KP |
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Rev.1.07
Mar 19, 2009
Page 27 of 60
REJ03B0140-0107
7545 Group
3. Timer 3
Timer 3 is an 8-bit timer and counts the clock selected by the
timer 3 count source selection bit. When Timer 3 underflows, the
timer 3 interrupt request bit is set to “1”.
Timer 3 has a timer latch to retain the reload value.
The value written to timer 3 (T3) while timer 3 is stopped is
transferred to the timer latch and the counter.
After the count of timer 3 (T3) starts, the value written to timer 3
is transferred only to the timer 3 latch. The value is not
transferred to the counter at write.
When timer underflows, the value of timer 3 latch is transferred
to the counter. (Since a count value of a timer is retained, the
written value becomes the count value of the timer after the next
underflow.)
When timer 3 (T3) is read, the count value of the timer is read.
When the timer 3 is read, the count value of timer 3 is read since
the count value of the timer 3 is retained until writing to timer 3
(T3) is performed after timer 3 is stopped.
Timer 3 always operates in the timer mode.
Timer 3 counts the clock selected by the timer 3 count source
selection bit. The contents of Timer 3 is decremented by 1 each
time the count clock is input.
The division ratio of Timer 3 is 1/(n+1) provided that the value
of Timer 3 is n.
Timer 3 is stopped by setting “1” to the timer 3 count stop bit.
Timer 2 and timer 3 are also used for the control timer of the
carrier wave control circuit.
Fig. 22 Structure of timer count source set register
Fig. 23 Timer 1, 2, 3 control register
b7
b0
Timer count source set register
(TCSS : address 002A16, initial value: 0016)
Timer 2 count source selection bits
b1 b0
0
0 : f(XIN)/16
0
1 : f(XIN)/2
1
0 : f(XIN)/8
1
1 : f(XIN)/1
Disable (return “0” when read)
Timer 3 count source selection bits
b3 b2
0
0 : f(XIN)/16
0
1 : f(XIN)/2
1
0 : f(XIN)/8
1
1 : Carrier wave output (CARRY)
b7
Timer 1, 2, 3 control register
(TC123 : address 002B16, initial value: 0616)
Timer 1 count stop bit
0: Count start
1: Count stop
Timer 2 count stop bit
0: Count start
1: Count stop
Timer 3 count stop bit
0: Count start
1: Count stop
Disable (return “0” when read)
b0
相關PDF資料 |
PDF描述 |
|---|---|
| M37545G8-XXXGP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP32 |
| M37545GC-XXXGP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP32 |
| M37545G1KP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO32 |
| M37545G4GP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP32 |
| M37545G6KP | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO32 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M37545G4GP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37545G4GP#U0 | 功能描述:MCU 2/5V 16K 32-LQFP QZ-ROM RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| M37545G4KP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37545G4-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37545G6GP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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