參數(shù)資料
型號(hào)： XE8801AMI027LF
廠商： Semtech
文件頁數(shù)： 69/135頁
文件大小： 0K
描述： IC DAS 16BIT FLASH 8K MTP 44LQFP
標(biāo)準(zhǔn)包裝： 800
系列： XE880x
應(yīng)用： 感測(cè)機(jī)
核心處理器： Coolrisc816?
程序存儲(chǔ)器類型： 閃存（22 kB）
控制器系列： XE8000
RAM 容量： 512 x 8
接口： UART，USRT
輸入/輸出數(shù)： 24
電源電壓： 2.4 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 44-VFQFN 裸露焊盤
包裝： 托盤
供應(yīng)商設(shè)備封裝： 44-MLPQ（7x7）
產(chǎn)品目錄頁面： 585 (CN2011-ZH PDF)
配用： XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
Semtech 2005
www.semtech.com
6-5
XE8801A – SX8801R
The last bit concerns the sleep mode control (see system documentation for the sleep mode description).
when Sleep is set to 1, and SleepEn is 1, the sleep mode is entered. The bit always reads back a 0.
The RegSysCtrl register enables the different available reset sources and the sleep mode.
EnResWD enables the reset due to the watchdog (can not be disabled once enabled).
EnBusError enables the reset due to a bus error condition.
EnResPConf enables the reset of the port configurations when reset by Port A, a Bus Error or the
watchdog.
SleepEn unlocks the Sleep bit. As long as SleepEn is 0, the Sleep bit has no effect.
6.7
Watchdog
The watchdog is a timer which has to be cleared at least every 2 seconds by the software to prevent a reset being
generated by the timeout condition.
The watchdog can be enabled by software by setting the EnResWD bit in the RegSysCtrl register to 1. It can then
only be disabled by a power on reset.
The watchdog timer can be cleared by writing consecutively the values Hx0A and Hx03 to the RegSysWD register.
The sequence must strictly be respected to clear the watchdog.
In assembler code, the sequence to clear the watchdog is:
move AddrRegSysWD, #0x0A
move AddrRegSysWD, #0x03
Only writing Hx0A followed by Hx03 resets the WD. If some other write instruction is done to the RegSysWD
between the writing of the Hx0A and Hx03 values, the watchdog timer will not be cleared.
It is possible to read the status of the watchdog in the RegSysWD register. The watchdog is a 4 bit counter with a
count range between 0 and 7. The system reset is generated when the counter is reaching the value 8.
6.8
Start-up and watchdog specifications
At start-up of the circuit, the POR (power-on-reset) block generates a reset signal during tPOR. The circuit starts
software execution after this period (see system chapter). The POR is intended to force the circuit in a correct state
at start-up. For precise monitoring of the supply voltage, the voltage level detector (VLD) has to be used.
Not
Recommended
for
New
Designs
相關(guān)PDF資料
PDF描述
X28HC256JIZ-15T1 IC EEPROM 256KBIT 150NS 32PLCC
MR25H10CDCR IC MRAM 1MBIT 40MHZ 8DFN
X28HC256JZ-15T1 IC EEPROM 256KBIT 150NS 32PLCC
MR256A08BCMA35R IC MRAM 256KB 35NS 48BGA
MR256A08BYS35R IC MRAM 256KB 35NS 44TSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XE8802 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Sensing Machine Data Acquisition MCU
XE8802MI000 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Sensing Machine Data Acquisition MCU
XE8802MI035LF 功能描述:IC DAS 16BIT FLASH 8K 100-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:XE880x 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲(chǔ)器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382
XE8805 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Data Acquisition MCU
XE8805AMI000 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Data Acquisition MCU
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

*
*
*