參數(shù)資料
型號: SAF-XC161CJ-16F20F
廠商: INFINEON TECHNOLOGIES AG
英文描述: 16-Bit Single-Chip Microcontroller
中文描述: 16位單片機(jī)
文件頁數(shù): 45/79頁
文件大?。?/td> 2440K
代理商: SAF-XC161CJ-16F20F
XC161
Derivatives
Functional Description
Data Sheet
41
V2.2, 2003-06
3.15
Watchdog Timer
The Watchdog Timer represents one of the fail-safe mechanisms which have been
implemented to prevent the controller from malfunctioning for longer periods of time.
The Watchdog Timer is always enabled after a reset of the chip, and can be disabled
until the EINIT instruction has been executed (compatible mode), or it can be disabled
and enabled at any time by executing instructions DISWDT and ENWDT (enhanced
mode). Thus, the chip’s start-up procedure is always monitored. The software has to be
designed to restart the Watchdog Timer before it overflows. If, due to hardware or
software related failures, the software fails to do so, the Watchdog Timer overflows and
generates an internal hardware reset and pulls the RSTOUT pin low in order to allow
external hardware components to be reset.
The Watchdog Timer is a 16-bit timer, clocked with the system clock divided by 2/4/128/
256. The high byte of the Watchdog Timer register can be set to a prespecified reload
value (stored in WDTREL) in order to allow further variation of the monitored time
interval. Each time it is serviced by the application software, the high byte of the
Watchdog Timer is reloaded and the low byte is cleared. Thus, time intervals between
13
μ
s and 419 ms can be monitored (@ 40 MHz).
The default Watchdog Timer interval after reset is 3.28 ms (@ 40 MHz).
相關(guān)PDF資料
PDF描述
SAF-XC161CJ-16F40F 16-Bit Single-Chip Microcontroller
SAK-XC164CS-8F20F 16-Bit Single-Chip Microcontroller
SAF-XC164CS-16F20F 16-Bit Single-Chip Microcontroller
SAK-XC164CS-8R20F 16-Bit Single-Chip Microcontroller
SAK-XC164CS-8R40F 16-Bit Single-Chip Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAF-XC161CJ-16F20F BB 功能描述:IC MCU 16BIT FLASH TQFP-144-19 RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:XC16x 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C,智能卡,UART/USART,USB 外圍設(shè)備:LED,POR,WDT 輸入/輸出數(shù):9 程序存儲器容量:64KB(64K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件
SAFXC161CJ16F20FAC 制造商:Rochester Electronics LLC 功能描述:- Bulk
SAFXC161CJ16F20FBB 功能描述:16位微控制器 - MCU XC166 CISC 128KB FLASH 20MHZ 5V RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
SAF-XC161CJ-16F20FBB 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述:
SAFXC161CJ16F20FBB TR 制造商:Infineon Technologies AG 功能描述: