參數(shù)資料
型號: XE8806AMI026TLF
廠商: Semtech
文件頁數(shù): 77/143頁
文件大?。?/td> 0K
描述: IC MCU LOW PWR MTP FLASH 32-TQFP
標準包裝: 1
系列: XE880x
應(yīng)用: 感測機
核心處理器: Coolrisc816?
程序存儲器類型: 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: 32-TQFP
包裝: 剪切帶 (CT)
供應(yīng)商設(shè)備封裝: 32-TQFP(7x7)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
其它名稱: XE8806AMI026CT
Semtech 2006
www.semtech.com
6-6
XE8806A/XE8807A
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.
6.9
Start-up and watchdog specifications
At start-up of the circuit, the POR 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 into a correct state at start-up. For
precise monitoring of the supply voltage, the voltage level detector (VLD) has to be used.
Symbol
Parameter
Min
Typ
Max
Unit
Comments
TPOR
POR reset duration
5
20
ms
Vbat_sl
Supply ramp up
0.5
V/ms
1
WDtime
Watchdog timeout period
2
s
2
Table 6. Electrical and timing specifications
Note: 1) The Vbat_sl defines the minimum slope required on VBAT. Correct start-up of the circuit is not guaranteed
if this slope is too slow. In such a case, a delay has to be built using the NRESET pin.
Note: 2) The minimal watchdog timeout period is guaranteed when the internal oscillators are used. In case an
external clock source is used, the watchdog timeout period will be correct in so far the contents of the
RegSysRCTrim1 and RegSysRCTrim2 registers are correct (see clock block documentation for more details).
相關(guān)PDF資料
PDF描述
395-026-540-804 CARD EDGE 26POS DL .100X.200 BLK
DS1270Y-100# IC NVSRAM 16MBIT 100NS 36DIP
DS1270W-150# IC NVSRAM 16MBIT 150NS 36DIP
DS1270W-100# IC NVSRAM 16MBIT 100NS 36DIP
AYF337365 CONN FPC 73POS SMD Y3BW
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XE8806ARI000 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8806ARI026LF 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8807AMI000 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8807AMI026LF 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8807AMI026TLF 功能描述:IC MCU LOW PWR MTP FLASH 32-TQFP 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 標準包裝: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