- 您现在的位置：买卖IC网 > PDF目录13690 > MAX6323CUT29+T (Maxim Integrated Products)IC SUPERVISOR 2.93V SOT23-6 PDF资料下载
参数资料
| 型号： | MAX6323CUT29+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/13页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR 2.93V SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 2.93V |
| 工作温度： | -40°C ~ 125°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) |
μP Supervisory Circuits with Windowed
(Min/Max) Watchdog and Manual Reset
V CC
V CC
V CC
MAX6323
RESET
R1
V CC
MAX6324
RESET
RESET
INPUT
V CC
μ P
GND
100k
GND
GND
Figure 6. RESET Valid to V CC = Ground Circuit
Interfacing to μPs with
Figure 7. Interfacing to μPs with Bidirectional Reset Pins
Bidirectional Reset Pins
Since the RESET output on the MAX6324 is open-drain,
+3.3V
+5.0V
this device easily interfaces with μPs that have bidirec-
tional reset pins, such as the Motorola 68HC11.
Connecting the μP supervisor’s RESET output directly
V CC
R PULLUP
V CC
to the microcontroller’s (μC’s) RESET pin with a single
pullup resistor allows either device to assert reset
(Figure 7).
MAX6324 Open-Drain RESET Output
Allows Use with Multiple Supplies
MAX6324
GND
RESET
RESET
INPUT
5V SYSTEM
GND
Generally, the pullup resistor connected to the
MAX6324 will connect to the supply voltage that is
being monitored at the IC’s V CC pin. However, some
systems may use the open-drain output to level-shift
from the monitored supply to reset circuitry powered by
some other supply (Figure 8). Keep in mind that as the
MAX6324’s V CC decreases below + 1.2V, so does the
IC’s ability to sink current at RESET. Also, with any pull-
up resistor, RESET will be pulled high as V CC decays
toward 0. The voltage where this occurs depends on
the pullup resistor value and the voltage to which it is
connected.
Watchdog Software Considerations
To help the watchdog timer monitor software execution
more closely, set and reset the watchdog input at dif-
ferent points in the program, rather than “pulsing” the
watchdog input high-low-high or low-high-low. This
technique avoids a “stuck” loop in which the watchdog
Figure 8. MAX6324 Open-Drain RESET Output Allows Use with
Multiple Supplies
time would continue to be reset within the loop, keeping
the watchdog from timing out.
Figure 9 shows an example of a flow diagram where
the I/O driving the watchdog input is set high at the
beginning of the program, set low at the beginning of
every subroutine or loop, then set high again when the
program returns to the beginning. If the program should
“hang” in any subroutine, the problem would be quickly
corrected, since the I/O is continually set low and the
watchdog time is allowed to time out, causing a reset or
interrupt to be issued.
_______________________________________________________________________________________
9
相关PDF资料 |
PDF描述 |
|---|---|
| MAX709RCUA+ | IC SUPPLY MON W/RESET 8UMAX |
| RPP30-2424SW-1L | CONV DC/DC 30W 9-36VIN 24VOUT |
| MAX709SCUA+ | IC SUPPLY MON W/RESET 8UMAX |
| 4448-20L | TOROID POWER HI CURRENT 25UH SMD |
| MAX709LCUA+ | IC SUPPLY MON W/RESET 8UMAX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6323CUT31 | 制造商:Maxim Integrated Products 功能描述:UP SUPERVISORY CIRCUIT WITH WINDOWE - Cut Tape Product |
| MAX6323CUT31+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 |
| MAX6323CUT31-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 |
| MAX6323CUT44 | 制造商:Maxim Integrated Products 功能描述:UP SUPERVISORY CIRCUIT WITH WINDOWE - Cut Tape Product |
| MAX6323CUT44+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 |
发布紧急采购，3分钟左右您将得到回复。