微处理器监控电路,带有看门狗定时器 MICROPROCESSOR SUPERVISOR WITH WATCHDOG TIMER
The UCC2946 is designed to provide accurate microprocessor supervision, including reset and watchdog functions. During power up, the device asserts a reset signal RES with VDD as low as 1 V. The reset signal remains asserted until the VDD voltage rises and remains above the reset threshold for the reset period. Both reset threshold and reset period are programmable by the user.
The UCC2946 is also resistant to glitches on the VDD line. Once RES has been deasserted, any drops below the threshold voltage need to be of certain time duration and voltage magnitude to generate a reset signal. These values are shown in. An I/O line of the microprocessor may be tied to the watchdog input WDI for watchdog functions. If the I/O line is not toggled within a set watchdog period, programmable by the user, WDO is asserted. The watchdog function is disabled during reset conditions.
The UCC2946 is available in 8-pin TSSOP PW package to optimize board space.
电源电压DC 2.10V min
供电电流 0.018 mA
静态电流 12.0 µA
阈值电压 Adjustable
复位电压Min 1.17 V
复位电压Max 1.26 V
工作温度Max 105 ℃
工作温度Min -40 ℃
电源电压Max 5.5 V
电源电压Min 2.1 V
安装方式 Surface Mount
引脚数 8
封装 TSSOP-8
长度 3.1 mm
宽度 4.4 mm
高度 1.15 mm
封装 TSSOP-8
工作温度 -40℃ ~ 105℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UCC2946TPWRQ1 TI 德州仪器 | 当前型号 | 当前型号 |
UCC2946PW 德州仪器 | 类似代替 | UCC2946TPWRQ1和UCC2946PW的区别 |
UCC3946D 德州仪器 | 类似代替 | UCC2946TPWRQ1和UCC3946D的区别 |
UCC2946DTR 德州仪器 | 类似代替 | UCC2946TPWRQ1和UCC2946DTR的区别 |