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參數(shù)資料
| 型號(hào)： | MCP120 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Microcontroller Supervisory Circuit with Push-Pull Output(漏極開路輸出微控制器監(jiān)控電路) |
| 中文描述： | 微控制器監(jiān)控電路與推，拉輸出（漏極開路輸出微控制器監(jiān)控電路） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 91K |
| 代理商： | MCP120 |
1999 Microchip Technology Inc.
Preliminary
DS11184C-page 1
M
MCP120/130
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
Open drain output
Internal pullup resistor (5K
) for MCP130
Holds RESET for 350 ms (typical)
Guaranteed RESET to V
CC
= 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. MCP120/130 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 open drain outputs. The MCP130 has an
internal 5K
pullup resistor. Both devices have active
low RESET pins. The MCP120/130 will assert the
RESET signal whenever the voltage on the V
DD
pin is
below the trip-point voltage.
PACKAGES
BLOCK DIAGRAM
V
SS
V
DD
RST
V
SS
V
DD
RST
MCP120
MCP130
MCP120 not offered in
V
SS
V
DD
RST
MCP120
MCP130
V
SS
V
DD
RST
MCP130 not offered in
V
SS
RST
V
DD
V
DD
NC
V
SS
1
2
3
4
8
7
6
5
NC
NC
NC
NC
MCP120
MCP130
MCP120
MCP130
TO-92 with
‘D’ Bondout
TO-92 with
‘F’ Bondout
TO-92 with
‘G’ Bondout
TO-92 with
‘H’ Bondout
SOT-23-3
150mil SOIC
MCP120
MCP130
Delay
Circuit
Output
Driver
RESET
V
DD
+
-
comparator
pull-up on
MCP130 only
5K
internal
Bandgap
Reference
Microcontroller Supervisory Circuit with Open Drain Output
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