- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45019 > M30624FGMFP 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP100 PDF資料下載
參數(shù)資料
| 型號： | M30624FGMFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數(shù)： | 22/30頁 |
| 文件大?。?/td> | 379K |
| 代理商： | M30624FGMFP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
4506 Group
Rev.3.01
2005.02.07
page 29 of 111
REJ03B0106-0301
Fig. 25 Watchdog timer function
WATCHDOG TIMER
Watchdog timer provides a method to reset the system when a pro-
gram run-away occurs. Watchdog timer consists of timer
WDT(16-bit binary counter), watchdog timer enable flag (WEF),
and watchdog timer flags (WDF1, WDF2).
The timer WDT downcounts the instruction clocks as the count
source from “FFFF16” after system is released from reset.
After the count is started, when the timer WDT underflow occurs
(after the count value of timer WDT reaches “FFFF16,” the next
count pulse is input), the WDF1 flag is set to “1.”
If the WRST instruction is never executed until the timer WDT un-
derflow occurs (until timer WDT counts 65534), WDF2 flag is set to
“1,” and the RESET pin outputs “L” level to reset the microcom-
puter.
Execute the WRST instruction at each period of 65534 machine
cycle or less by software when using watchdog timer to keep the
microcomputer operating normally.
When the WEF flag is set to “1” after system is released from reset,
the watchdog timer function is valid.
When the DWDT instruction and the WRST instruction are ex-
ecuted continuously, the WEF flag is cleared to “0” and the
watchdog timer function is invalid.
The WEF flag is set to "1" at system reset or RAM back-up mode.
The WRST instruction has the skip function. When the WRST in-
struction is executed while the WDF1 flag is “1”, the WDF1 flag is
cleared to “0” and the next instruction is skipped.
When the WRST instruction is executed while the WDF1 flag is “0”,
the next instruction is not skipped.
The skip function of the WRST instruction can be used even when
the watchdog timer function is invalid.
65534 count
(Note)
Value of 16-bit timer (WDT)
WDF1 flag
WRST instruction
executed
(skip executed)
RESET pin output
WDF2 flag
System reset
Reset
released
After system is released from reset (= after program is started), timer WDT starts count down.
When timer WDT underflow occurs, WDF1 flag is set to “1.”
When the WRST instruction is executed, WDF1 flag is cleared to “0,” the next instruction is skipped.
When timer WDT underflow occurs while WDF1 flag is “1,” WDF2 flag is set to “1” and the
watchdog reset signal is output.
The output transistor of RESET pin is turned “ON” by the watchdog reset signal and system reset is
executed.
Note: The number of count is equal to the number of machine cycle because the count source
of watchdog timer is the instruction clock.
FFFF16
000016
相關PDF資料 |
PDF描述 |
|---|---|
| M30624MGM-XXXGP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP100 |
| M30624FGAGP#U3 | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| M30620FCMGP | 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP100 |
| M30620FCAFP | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| M30620M8A-XXXFP | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M30624FGMFP#D3 | 功能描述:IC M16C MCU FLASH 256K 100-QFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M16C/60 標準包裝:160 系列:S08 核心處理器:S08 芯體尺寸:8-位 速度:40MHz 連通性:I²C，LIN，SCI，SPI 外圍設備:LCD，LVD，POR，PWM，WDT 輸入/輸出數(shù):53 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1.9K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 12x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:64-LQFP 包裝:托盤 |
| M30624FGMFP#D5 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-bit M16C CISC 256KB Flash 3.3V 100-Pin PQFP 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 256KB FLASH 3.3V 100PQFP - Trays |
| M30624FGMFP#U3 | 制造商:Renesas Electronics Corporation 功能描述:16BIT M16C CISC 256KB FLASH 10MHZ 3.3V 100QFP - Trays |
| M30624FGMFP#U5 | 功能描述:MCU 3/5V 256K PB-FREE 100-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M16C/60 標準包裝:160 系列:S08 核心處理器:S08 芯體尺寸:8-位 速度:40MHz 連通性:I²C，LIN，SCI，SPI 外圍設備:LCD，LVD，POR，PWM，WDT 輸入/輸出數(shù):53 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1.9K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 12x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:64-LQFP 包裝:托盤 |
| M30624FGMGP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
發(fā)布緊急采購，3分鐘左右您將得到回復。