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| 型号： | MAX6884ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 21/34页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR PWR SPL 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 多压监控器 |
| 监视电压数目： | 6 |
| 输出： | 开路漏极，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 6 种可选阀值组合 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 包装： | 管件 |
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EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
The normal watchdog timeout period (t WD ) is active
after the initial watchdog timer and continues to be
active until the watchdog timer expires. The normal
watchdog timeout period monitors a pulsed output of
the μP that indicates when normal processor behavior
occurs. If no pulse occurs during the normal watchdog
timeout period, this indicates that the processor has
stopped operating or is stuck in an infinite execution
loop and WDO asserts. Disable or enable the watch-
dog timer through R15h[7].
If RESET is programmed to depend on WDO and the
watchdog timer expires, WDO will assert for a short
pulse, just long enough to assert RESET (typically less
Table 8. Watchdog Register Settings
than 5μs; see Figure 4). If WDO is not programmed to
depend on RESET and the watchdog timer expires,
WDO will remain asserted until a low-to-high or high-to-
low edge occurs on WDI. Program WDO for open-drain
or weak pullup (see Table 8).
Fault Register
Registers 28h to 2Ah store all fault conditions including
undervoltage, overvoltage, and watchdog timer faults
(see Table 9). Fault registers are read-only and lose
contents upon power removal. The first read command
from the fault registers after power-up gives invalid
data. Reading the fault register clears all fault flags in
the register.
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT RANGE
DESCRIPTION
WDO Output Type
[0]
[3:1]
1 = Open Drain
0 = Weak Pullup
Initial Watchdog Timeout
000 = 6.25ms
001 = 25ms
010 = 100ms
011 = 400ms
100 = 1.6s
101 = 6.4ms
110 = 25.6s
111 = 102.4s
15h
95h
Normal Watchdog Timeout
000 = 6.25ms
001 = 25ms
010 = 100ms
[6:4]
[7]
011 = 400ms
1100 = 1.6s
101 = 6.4ms
110 = 25.6s
111 = 102.4s
Watchdog Enable
1 = Enabled
0 = Disabled
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相关PDF资料 |
PDF描述 |
|---|---|
| MAX6886ETP+T | IC SUPERVISOR HEX 20-TQFN |
| MAX6887RETE+ | IC SUPERVISOR HEX 16-TQFN |
| MAX6889ETJ+T | IC SEQUENCE/SUPERVISOR 32TQFN |
| MAX688ESA+T | IC REG LDO 3.3V 1A 8-SOIC |
| MAX6894ETI+ | IC SEQUENCE/SUPERVISOR 28TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6884ETP+ | 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6884ETP+T | 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6884ETP-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6884EVCMOD2 | 功能描述:监控电路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6884EVKIT | 功能描述:监控电路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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