參數(shù)資料
型號(hào): MCP809
廠商: Microchip Technology Inc.
英文描述: Microcontroller Supervisory Circuit with Push-Pull Output(帶推挽輸出的微控制器監(jiān)控電路)
中文描述: 微控制器監(jiān)控電路與推,拉輸出(帶推挽輸出的微控制器監(jiān)控電路)
文件頁數(shù): 1/8頁
文件大?。?/td> 83K
代理商: MCP809
1999 Microchip Technology Inc.
Preliminary
DS11194A-page 1
M
MCP809/810
FEATURES
Holds microcontroller in reset until supply voltage
reaches stable operating level
Resets microcontroller during power loss
Precision monitoring of 3V, 3.3V, and 5V systems
7 voltage trip points available
Active low RESET pin (MCP809) or active high
RESET (MCP810)
Push-pull output
Holds RESET/RESET for 350 ms (typical)
Guaranteed RESET/RESET to V
DD
= 1.0V
Accuracy of ±125mV for 5V systems and ±75mV
for 3V systems over temperature
45 μA typical operating current
Temperature range:
- Industrial (I): -40
°
C to +85
°
C
DESCRIPTION
The Microchip Technology Inc. MCP809/810 is a volt-
age supervisory device designed to keep a microcon-
troller in reset until the system voltage has reached the
proper level and stabilized. It also operates as protec-
tion from brown-out conditions when the supply voltage
drops below a safe operating level. Both devices are
available with a choice of seven different trip voltages
and both have push-pull outputs. The MCP809 has a
low active RESET pin and the MCP810 has a high
active RESET pin. The MCP809/810 will assert the
RESET/RESET signal whenever the voltage on the
V
DD
pin is below the trip-point voltage.
PACKAGES
BLOCK DIAGRAM
V
DD
V
SS
SOT-23-3
RST
V
DD
V
SS
RST
M
M
Bandgap
Reference
Delay
Circuit
Output
Driver
RESET
V
DD
+
-
Comparator
RESET
Microcontroller Supervisory Circuit with Push-Pull Output
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