参数资料
型号: SP690ACP-L
厂商: Exar Corporation
文件页数: 13/16页
文件大小: 0K
描述: IC SUPERVISOR MPU LP 8PDIP
标准包装: 50
类型: 简单复位/加电复位
监视电压数目: 1
复位: 低有效
复位超时: 最小为 140 ms
电压 - 阀值: 4.65V
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
其它名称: 1016-1220-5
+5V
V CC
R 1
Buffered RESET connects to System Components
5.0 - 1.25 = 1.25 - V TRIP
GND
PFI
PFO
R 1 R 2
R 2
V-
+5V
V CC
GND
RESET
4.7K ?
RESET
+5V
V CC
μ P
GND
PFO
+5V
Figure 20. Interfacing to Microprocessors with
Bidirectional RESET I/O
*V TRIP
0V
0V
V-
*V TRIP is a negative voltage
Figure 19. Monitoring a Negative Voltage
Interfacing to Microprocessors with
Bidirectional Reset Pins
Microprocessors with bidirectional reset pins,
such as the Motorola 68HC11 series, can con-
tend with this series' RESET output. If, for
example, the RESET output is driven high and
the μ P wants to pull it low, indeterminate logic
levels may result. To correct this, connect a
4.7K ? resistor between the RESET output and
the μ P reset I/O, as in Figure 20 . Buffer the
RESET output to other system components.
Date: 11/29/04
SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over
13
? Copyright 2004 Sipex Corporation
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