MCP101 Datasheet, PDF (1/8 Pages) Microchip Technology – Microcontroller Supervisory Circuit with Push-Pull Output

MCP100/101
Microcontroller Supervisory Circuit with Push-Pull Output
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 (MCP100) or active high
RESET (MCP101)
• 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. MCP100/101 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 MCP100 has a
low active RESET pin and the MCP101 has a high
active RESET pin. The MCP100/101 will assert the
RESET/RESET signal whenever the voltage on the
V_DD pin is below the trip-point voltage.
PACKAGES
TO-92 with
‘D’ Bondout
RST
OR
RSTV_DD
V_SS
MCP100
MCP101
TO-92 with
‘H’ Bondout
V_DD
VSS
RST
OR
RST
MCP100
MCP101
SOT-23-3
RST
OR
RST
V_SS
V_DD
MCP100
MCP101
BLOCK DIAGRAM
V_DD
Comparator
+
-
Delay
Circuit
Bandgap
Reference
Output
Driver
RESET
or
RESET
© 1999 Microchip Technology Inc.
Preliminary
DS11187D-page 1