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参数资料
| 型号： | MAX792TESE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.06V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
Microprocessor and Nonvolatile
Memory Supervisory Circuits
REGULATOR
RESET
1
TO μ P RESET
R3
V CC
RESET IN/INT
RESET 2
TO μ P
MAX792
MAX820
10k
R1
R4
MAX792
MAX820
LLIN/REFOUT
RESET 1
TO μ P
Figure 5. Adding an external pull-down resistor ensures RESET
R2
LOW LINE 10
TO μ P NMI
is valid with V CC down to GND.
V LOW LINE = 1.3
( R1 R2 + R2 )
GND
VOLTAGE REGULATOR
( R4 )
V RESET = 1.3 R3 + R4
Figure 4c. Alternative Connection for External Programming Mode
Reset Outputs (RESET and RESET )
3
V CC
MAX792
MAX820
The RESET output is active low and typically sinks 1.6mA
at 0.1V. When deasserted, RESET sources 1.6mA at typi-
cally V CC - 1.5V. The RESET output is the inverse of
RESET . RESET is guaranteed to be valid down to V CC = 1V,
and an external 10k ? pull-down resistor on RESET
7 OVI
1.30V
OVO 6
OVERVOLTAGE
ensures that it will be valid with V CC down to GND
(Figure 5). As V CC goes below 1V, the gate drive to the
RESET output switch reduces accordingly, increasing the
r DS(ON) and the saturation voltage. The 10k ? pull-down
resistor ensures that the parallel combination of switch
plus resistor will be around 10k ? and the saturation
voltage will be below 0.4V while sinking 40μA. When
using an external pull-down resistor of 10k ? , the high
state for the RESET output with V CC = 4.75V is typically
4.60V.
Overvoltage Comparator
The overvoltage comparator is an uncommitted com-
parator that has no effect on the operation of other chip
functions. Use this input to provide overvoltage indica-
tion by connecting a voltage divider from the input sup-
ply, as in Figure 6.
Connect OVI to ground if the overvoltage function is not
used. OVO goes low when OVI goes above 1.30V. With
OVI below 1.30V, OVO is actively pulled to V CC and can
source1μA.
GND
12
Figure 6. Detecting an Overvoltage Condition
Watchdog Function
The watchdog monitors μP activity via the watchdog
input (WDI). If the μP becomes inactive, WDO and WDPO
are asserted. To use the watchdog function, connect
WDI to a μP bus line or I/O line. If WDI remains high or
low for longer than the watchdog timeout period (1.6s
nominal), WDPO and WDO are asserted, indicating a soft-
ware fault condition (see Watchdog-Pulse Output and
Watchdog Output sections).
Watchdog Input
If the watchdog function is unused, connect WDI to V CC
or GND. A change of state (high-to-low, low-to-high, or
a minimum 100ns pulse) at WDI during the watchdog
period resets the watchdog timer. The watchdog timer
______________________________________________________________________________________
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX792TESE+ | 功能描述:监控电路 MPU & NV Memory Supervisor 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 |
| MAX792TESE+T | 功能描述:监控电路 MPU & NV Memory Supervisor 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 |
| MAX792TESE-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 |
| MAX792TMJE | 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 |
| MAX793RCPE | 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 |
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