參數(shù)資料
型號(hào)： ADUC7039BCP6Z-RL
廠商： Analog Devices Inc
文件頁數(shù)： 64/92頁
文件大?。?/td> 0K
描述： IC MCU ARM7 BATT SENSER 32LFCSP
標(biāo)準(zhǔn)包裝： 2,500
系列： MicroConverter® ADuC7xxx
核心處理器： ARM7
芯體尺寸： 16/32-位
速度： 20.48MHz
連通性： LIN，SPI
外圍設(shè)備： POR，溫度傳感器，WDT
輸入/輸出數(shù)： 6
程序存儲(chǔ)器容量： 64KB（32K x 16）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 1K x 32
電壓 - 電源 (Vcc/Vdd)： 3.5 V ~ 18 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 2x16b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 115°C
封裝/外殼： 32-VFQFN 裸露焊盤，CSP
包裝： 帶卷 (TR)
Data Sheet
ADuC7039
Rev. D | Page 67 of 92
TIMER2—WATCHDOG TIMER
Timer2 has two modes of operation: normal mode and watchdog
mode. The watchdog timer is used to recover from an illegal
software state. Once enabled, it requires periodic servicing to
prevent it from forcing a reset of the processor.
Timer2 reloads the value from T2LD when Timer2 overflows
in normal mode, or immediately when T2CLRI is written in
watchdog mode.
Normal Mode
Timer2 in normal mode is identical to Timer0 in 16-bit mode
of operation, except for the clock source and prescaler. The
clock source is the low power oscillator and can be scaled by
a factor of 1, 16, or 256.
Watchdog Mode
Watchdog mode is entered by setting T2CON[5]. Timer2
decrements from the timeout value present in the T2LD
register until 0. The maximum timeout is 524 seconds, using
the maximum prescalar of 1/256 and full scale in T2LD.
User software should not configure a timeout period of less
than 30 ms. This is to avoid any conflict with Flash/EE memory
page erase cycles, which require 20 ms to complete a single page
erase cycle.
If T2VAL reaches 0, a reset or an interrupt occurs, depending
on T2CON[1]. To avoid a reset or an interrupt event, any
value must be written to T2CLRI before T2VAL reaches 0.
This reloads the counter with T2LD and begins a new timeout
period.
Once watchdog mode is entered, T2LD and T2CON are write-
protected.
These two registers cannot be modified until a power-on reset
event resets the watchdog timer. After any other reset event, the
watchdog timer continues to count. The watchdog timer should
be configured in the initial lines of user code to avoid an infinite
loop of watchdog resets.
Timer2 is automatically halted during the JTAG debug access
and recommences counting only once JTAG has relinquished
control of the ARM7 core. By default, Timer2 continues to
count during power-down. This can be disabled by setting
T2CON[0]. It is recommended that the default value be
used, that is, that the watchdog timer continue to count
during power-down.
The Timer2 interface consists of four MMRs.
T2LD is a 16-bit register that holds the 16-bit value that is
loaded into the counter.
T2VAL is a 16-bit register that hold the 16-bit current value
of Timer2.
T2CLRI is an 8-bit register. Writing any value to this
register clears the Timer2 interrupt in normal mode
or resets a new timeout period in watchdog mode.
T2CON is a 16-bit configuration register described
Timer2 Load Registers
Name:
T2LD
Address:
0xFFFF0340
Default Value: 0x0050
Access:
Read/write
Function:
T2LD is a 16-bit register that holds the 16-bit
value that is loaded into the counter.
Timer2 Clear Register
Name:
T2CLRI
Address:
0xFFFF034C
Access:
Write only
Function:
This 8-bit, write-only MMR is written (with
any value) by user code to clear the interrupt,
if in normal mode or to reset the timeout if
in watchdog mode.
Timer2 Value Register
Name:
T2VAL
Address:
0xFFFF0344
Default Value: 0x0050
Access:
Read only
Function:
T2VAL is a 16-bit register that holds the
current value of Timer2.
Timer2 Control Register
Name:
T2CON
Address:
0xFFFF0348
Default Value: 0x0000
Access:
Read/write
Function:
This 16-bit MMR configures the mode of
operation of Timer2.
相關(guān)PDF資料
PDF描述
ADUC7061BCPZ32 IC MCU 16/32BIT 32KB 32LFCSP
ADUC7121BBCZ-RL PRECISION ANALOG MCU I.C
ADUC7122BBCZ-RL PRECISION ANALOG MCU I.C
ADUC7126BSTZ126-RL IC MCU 16/32B 126KB FLASH 80LQFP
ADUC7129BSTZ126 IC DAS MCU ARM7 ADC/DDS 80-LQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADUC7039WBCPZ 制造商:Analog Devices 功能描述:FLASH 64K ARM7 DUAL 16-BIT ADC LIN I.C. - Trays 制造商:Analog Devices 功能描述:IC MCU ARM7 64KB FLASH 32LFCSP 制造商:Analog Devices 功能描述:Flash 64k ARM7 Dual 16-Bit ADC LIN I.C.
ADUC7039WBCPZ-RL 制造商:Analog Devices 功能描述:FLASH 64K ARM7 DUAL 16-BIT ADC LIN I.C. - Tape and Reel 制造商:Analog Devices 功能描述:IC MCU ARM7 64KB FLASH 32LFCSP 制造商:Analog Devices 功能描述:Flash 64k ARM7 Dual 16-Bit ADC LIN I.C.
ADUC7060 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Precision Analog Microcontroller, Dual Sigma-Delta ADCs, Flash/EE, ARM7TDMI
ADUC7060BCPZ32 功能描述:IC MCU 24BIT 32KB FLASH 48LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 產(chǎn)品培訓(xùn)模塊:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 標(biāo)準(zhǔn)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(shè)備:欠壓檢測/復(fù)位，DMA，POR，PWM，WDT 輸入/輸出數(shù):50 程序存儲(chǔ)器容量:192KB（96K x 16） 程序存儲(chǔ)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(shù)據(jù)轉(zhuǎn)換器:A/D 16x12b; D/A 2x12b 振蕩器型:內(nèi)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
ADUC7060BCPZ32-RL 功能描述:IC MCU FLASH 24BIT 32KB 48LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*