TCM809 Microchip Technology, Inc., TCM809 Datasheet
TCM809
Manufacturer Part Number
TCM809
Description
The TCM809 And TCM810 Are Cost-effective System Supervisor Circuits Designed to Monitor VCC in Digital Systems And Provide a Reset Signal to The Host Processor When Necessary
Manufacturer
Microchip Technology, Inc.
Datasheet
1.TCM809.pdf
(16 pages)
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Features
• Precision V
• 140 msec Minimum RESET Timeout Period
• RESET Output to V
• Low Supply Current, 9 µA (typ.)
• V
• Small 3-Pin SC-70 and SOT-23B Packages
• No External Components
• Push-pull RESET output
• Temperature Range:
Applications
• Computers
• Embedded Systems
• Battery Powered Equipment
• Critical Microcontroller Power Supply Monitoring
• Automotive
Typical Application Circuit
M
V
Nominal System Voltage Supplies
- Commercial, SC-70(E):
- Industrial, SOT-23, SC-70(V):
2002 Microchip Technology Inc.
DD
DD
Transient Immunity
DD
Monitor for 2.5V, 3.0V, 3.3V, 5.0V
TCM809
GND
V
DD
RESET
3
DD
1
3-Pin Microcontroller Reset Monitors
= 1.0V (TCM809)
2
Microcontroller
RESET
INPUT
(Active Low)
-40 C to +85 C
-40 C to +125 C
GND
V
PIC
DD
TCM809/TCM810
General Description
The TCM809 and TCM810 are cost effective system
supervisor circuits designed to monitor V
systems and provide a reset signal to the host proces-
sor when necessary. No external components are
required.
The RESET output is typically driven active within
20 µsec (SOT-23) or 65 µsec (SC-70) of V
through the reset voltage threshold. RESET is main-
tained active for a minimum of 140 msec after V
rises above the reset threshold. The TCM810 has an
active-high RESET output while the TCM809 has an
active-low RESET output. The output of the TCM809/
TCM810 is valid down to V
available in 3-Pin SOT-23B and SC-70 packages.
The TCM809/TCM810 are optimized to reject fast tran-
sient glitches on the V
9 µA (typ., V
for battery powered applications.
Pin Configurations
SOT-23B/SC-70
Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236
TCM810 (RESET)
TCM809 RESET
DD
= 3.3V) makes these devices suitable
GND 1
DD
2
line. Low supply current of
DD
= 1V. Both devices are
DS21661B-page 1
DD
3
DD
in digital
V
DD
falling
DD
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