參數(shù)資料
型號(hào)： ADUC7126BSTZ126-RL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 105/108頁(yè)
文件大?。?/td> 0K
描述： IC MCU 16/32B 126KB FLASH 80LQFP
標(biāo)準(zhǔn)包裝： 1,000
系列： MicroConverter® ADuC7xxx
核心處理器： ARM7
芯體尺寸： 16/32-位
速度： 41.78MHz
連通性： EBI/EMI，I²C，SPI，UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 40
程序存儲(chǔ)器容量： 126KB（63K x 16）
程序存儲(chǔ)器類(lèi)型： 閃存
RAM 容量： 32K x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 12x12b，D/A 4x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 125°C
封裝/外殼： 80-LQFP
包裝： 帶卷 (TR)
ADuC7124/ADuC7126
Data Sheet
Rev. C | Page 96 of 108
Timer3 (Watchdog Time)
Timer3 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 processor reset.
Normal Mode
Timer3 in normal mode is identical to Timer0, except for the
clock source and the count-up functionality. The clock source is
32 kHz from the PLL and can be scaled by a factor of 1, 16, or
256 (see Figure 55).
09
12
3-
03
7
32.768kHz
PRESCALER
÷ 1, 16 OR 256
16-BIT
UP/DOWN
COUNTER
16-BIT
LOAD
TIMER3
VALUE
WATCHDOG
RESET
TIMER3 IRQ
Figure 55. Timer3 Block Diagram
Watchdog Mode
Watchdog mode is entered by setting Bit 5 in the T3CON MMR.
Timer3 decreases from the value present in the T3LD register
until 0 is reached. T3LD is used as the timeout. The maximum
timeout can be 512 sec using the prescaler/256 and full scale in
T3LD. Timer3 is clocked by the internal 32 kHz crystal when
operating in the watchdog mode. Note that, to enter watchdog
mode successfully, Bit 5 in the T3CON MMR must be set after
writing to the T3LD MMR.
If the timer reaches 0, a reset or an interrupt occurs, depending
on Bit 1 in the T3CON register. To avoid reset or interrupt, any
value must be written to T3CLRI before the expiration period.
This reloads the counter with T3LD and begins a new timeout
period.
When watchdog mode is entered, T3LD and T3CON are write-
protected. These two registers cannot be modified until a reset
clears the watchdog enable bit, which causes Timer3 to exit
watchdog mode.
The Timer3 interface consists of four MMRs: T3LD, T3VAL,
T3CON, and T3CLRI.
T3LD Register
Name:
T3LD
Address:
0xFFFF0360
Default Value:
0x0000
Access:
Read/write
T3LD is a 16-bit load register.
T3VAL Register
Name:
T3VAL
Address:
0xFFFF0364
Default Value:
0xFFFF
Access:
Read only
T3VAL is a 16-bit read-only register that represents the current
state of the counter.
T3CON Register
Name:
T3CON
Address:
0xFFFF0368
Default Value:
0x0000
Access:
Read/write
T3CON is the configuration MMR described in Table 145.
Table 145. T3CON MMR Bit Descriptions
Bit
Value
Description
[31:9]
Reserved.
8
Count up.
Set by the user for Timer3 to count up.
Cleared by the user for Timer3 to count down
by default.
7
Timer3 enable bit.
Set by the user to enable Timer3.
Cleared by the user to disable Timer3 by
default.
6
Timer3 mode.
Set by the user to operate in periodic mode.
Cleared by the user to operate in free-running
mode (default mode).
5
Watchdog mode enable bit.
Set by the user to enable watchdog mode.
Cleared by the user to disable watchdog
mode by default.
4
Secure clear bit.
Set by the user to use the secure clear option.
Cleared by the user to disable the secure clear
option by default.
[3:2]
Prescale.
00
Source clock/1 by default.
01
Source clock/16.
10
Source clock/256.
11
Undefined. Equivalent to 00.
1
Watchdog IRQ option bit.
Set by the user to produce an IRQ instead of a
reset when the watchdog reaches 0.
Cleared by the user to disable the IRQ option.
0
Reserved.
相關(guān)PDF資料
PDF描述
ADUC7129BSTZ126 IC DAS MCU ARM7 ADC/DDS 80-LQFP
ADUC812BSZ-REEL IC MCU FLASH 12BIT ADC 52MQFP
ADUC814BRU IC ADC 12BIT W/FLASH MCU 28TSSOP
ADUC816BCP IC MCU 8K FLASH ADC/DAC 56LFCSP
ADUC824BSZ-REEL IC MCU 8K FLASH ADC/DAC 52MQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADUC7128 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-bit ADC & DDS DAC
ADUC7128BCPZ126 功能描述:IC DAS MCU ARM7 ADC/DDS 64-LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:96KB（96K x 8） 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-LQFP 包裝:托盤(pán) 其它名稱(chēng):568-9587
ADUC7128BCPZ1262 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC
ADUC7128BCPZ126-RL 功能描述:IC DAS MCU ARM7 ADC/DDS 64-LFCSP RoHS:是 類(lèi)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(cè)/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(lèi)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(chēng):269-4116Z8F0413SH005EG-ND
ADUC7128BCPZ126-RL2 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*