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参数资料
| 型号： | MAX6732UTSVD3+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/15页 |
| 文件大小： | 0K |
| 描述： | IC MPU SUPERVISOR W/WD SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 1.575V，2.925V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
MAX6730–MAX6735
Single-/Dual-/Triple-Voltage μP Supervisory
Circuits with Independent Watchdog Output
Overdrive, for which reset pulses are not generated.
The graph was produced using falling V CC _ pulses,
starting above V TH and ending below the reset thresh-
Functional Diagram
old by the magnitude indicated (reset threshold over-
drive). The graph shows the maximum pulse width that
V CC 1
MR
a falling V CC transient typically might have without
causing a reset pulse to be issued. As the amplitude of
the transient increases (i.e., goes further below the
reset threshold), the maximum allowable pulse width
MAX6730–
MAX6735
V CC 1
MR
PULLUP
decreases. A 0.1μF bypass capacitor mounted close to
V CC _ provides additional transient immunity.
V CC 1
V CC 1
V CC 2
Watchdog Software Considerations
Setting and resetting the watchdog input at different
points in the program rather than “pulsing” the watch-
V CC 2
V REF
RESET
TIMEOUT
PERIOD
RESET
OUTPUT
DRIVER
RST
dog input high-low-high or low-high-low helps the
watchdog timer closely monitor software execution.
This technique avoids a “stuck ” loop, in which the
watchdog timer continues to be reset within the loop,
V CC 1
preventing the watchdog from timing out. Figure 6
shows an example flow diagram in which the I/O dri-
ving the watchdog input is set high at the beginning of
the program, set low at the beginning of every subrou-
tine or loop, and then set high again when the program
RSTIN
WATCHDOG
TIMER
WDO
WDI
returns to the beginning. If the program “hangs” in any
subroutine, the I/O continually asserts low (or high),
V CC 1
and the watchdog timer expires, issuing a reset or
interrupt.
V REF / 2
REF
GND
START
SET WDI
HIGH
PROGRAM
CODE
SUBROUTINE OR
PROGRAM LOOP
SET WDI LOW
SUBROUTINE
COMPLETED
RETURN
Figure 6. Watchdog Flow Diagram
12
HANG IN
SUBROUTINE
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6732UTSVD4 | 制造商:Maxim Integrated Products 功能描述:SINGLE-/DUAL-/TRIPLE-VOLTAGE MICROP - Rail/Tube |
| MAX6732UTSVD4+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 |
| MAX6732UTSVD4-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 |
| MAX6732UTSVD5 | 制造商:Maxim Integrated Products 功能描述:SINGLE-/DUAL-/TRIPLE-VOLTAGE MICROP - Rail/Tube |
| MAX6732UTSVD5+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 |
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