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參數資料
| 型號： | M38C12M4-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁數： | 17/59頁 |
| 文件大小： | 704K |
| 代理商： | M38C12M4-XXXFP |
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Rev.2.40
Jun 14, 2004
page 24 of 56
38C1 Group
Timer 1, Timer 2, Timer 3
Timer 1, timer 2, and timer 3 are 8-bit timers. The count source for
each timer can be selected by timer 123 mode register. The timer
latch value is not affected by a change of the count source. How-
ever, because changing the count source may cause an inadvert-
ent count down of the timer. Therefore, rewrite the value of timer
whenever the count source is changed.
qTimer 2 Write Control
If the timer 2 write control bit is “0”, when the value is written in the
address of timer 2, the value is loaded in the timer 2 and the latch
at the same time.
If the timer 2 write control bit is “1”, when the value is written in the
address of timer 2, the value is loaded only in the latch. The value
in the latch is loaded in timer 2 after timer 2 underflows.
qTimer 2 Output Control
When the timer 2 (TOUT) is output enabled, an inversion signal
from pin TOUT is output each time timer 2 underflows.
In this case, set the port P62 shared with the port TOUT to the out-
put mode.
sNote on Timer 1 to Timer 3
When the count source of timers 1 to 3 is changed, the timer
counting value may be changed large because a thin pulse is gen-
erated in count input of timer. If timer 1 output is selected as the
count source of timer 2 or timer 3, when timer 1 is written, the
counting value of timer 2 or timer 3 may be changed large be-
cause a thin pulse is generated in timer 1 output.
Therefore, set the value of timer in the order of timer 1, timer 2
and timer 3 after the count source selection of timer 1 to 3.
Fig. 21 Structure of timer 123 mode register
TOUT output active edge switch bit
1 : Start at “L” output
TOUT output control bit
0 : TOUT output disabled
1 : TOUT output enabled
Timer 2 write control bit
0 : Write data in latch and counter
1 : Write data in latch only
Timer 2 count source selection bit (Note)
0 : Timer 1 output
1 :
φSOURCE/16
Timer 3 count source selection bit
0 : Timer 1 output
1 : f(XIN)/16
Timer 1 count source selection bit (Note)
0 :
φSOURCE/16
1 : f(XCIN)
Not used (Do not write “1” to these bits.)
Timer 123 mode register
(T123M :address 002916, initial value: 0016)
Note:
φSOURCE represents the oscillation frequency of
XIN input in the middle- and high-speed mode,
on-chip oscillator in the on-chip oscillator mode,
and sub-clock in the low-speed mode.
b7
b0
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相關代理商/技術參數 |
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| M38C13E6FP | 功能描述:IC 740 MCU OTP 24K 64LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 產品培訓模塊:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 標準包裝:90 系列:AVR® XMEGA 核心處理器:AVR 芯體尺寸:8/16-位 速度:32MHz 連通性:I²C，IrDA，SPI，UART/USART 外圍設備:欠壓檢測/復位，DMA，POR，PWM，WDT 輸入/輸出數:50 程序存儲器容量:192KB（96K x 16） 程序存儲器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:16K x 8 電壓 - 電源 (Vcc/Vdd):1.6 V ~ 3.6 V 數據轉換器:A/D 16x12b; D/A 2x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:64-TQFP 包裝:托盤 配用:ATSTK600-RC14-ND - STK600 SOCKET/ADAPTER 64TQFPATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFPATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMRATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM |
| M38C13E6HP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C13RLFS | 制造商:Renesas Electronics Corporation 功能描述:EMULATION MCU/8BIT CMOS EMULATION CHIP - Bulk |
| M38C24M4-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38C24M4-XXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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