TC32MCDB Microchip Technology, TC32MCDB Datasheet - Page 6

• Manufacturer Part Number: TC32MCDB
• Description: IC SYSTEM SUPERVISOR SOT223-3
• Manufacturer: Microchip Technology
• Series: ECONOMONITOR™r
• Type: Simple Reset/Power-On Resetr

Specifications of TC32MCDB

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 500 ms Minimum
• Voltage - Threshold: 4.375V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: SOT-223 (3 leads + Tab), SC-73, TO-261
• Manual Reset: Not Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current (typ): 200 uA
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Power Fail Detection: No
• Undervoltage Threshold: 4.25 V
• Overvoltage Threshold: 4.5 V
• Output Type: Open Drain
• Power-up Reset Delay (typ): 900 ms
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TC32M
3.4
A built-in debounce circuit allows a push-button switch
(PB) or other electronic signal to be wire-ORed to this
pin as an external Reset override control. The external
Reset is required to be an active low signal. Internally,
this input is timed to provide a minimum Reset pulse
width of 500 msec. Reference Figure .
t
FIGURE 3-2:
FIGURE 3-4:
DS21402C-page 6
TC32M
RS
RS
External Override Reset Control
V
R1, 10 kΩ
IL
Microcontroller Example
PB Closed
Reset
R2,10 kΩ
RS Pulled Low By Push-
Button Reset
TC32M Hardware Connections (R1, R2 Chosen To Meet V
t
RST
PB Open
PO.1
Microcontroller
Reset
5V
V
IH
TC32M
R1, 10 kΩ
RS
FIGURE 3-3:
3.5
The TC32M is optimized for fast response to negative-
going changes in V
amount of electrical noise on V
using relays), may require a 0.01 μF bypass capacitor
to reduce detection sensitivity. This capacitor should be
installed as close to the TC32M as possible to keep the
capacitor lead length short.
V
V
DD
RST
RS
5V
R2, 10 kΩ
Reset
Supply Monitor Noise Sensitivity
Microprocessor Example
t
RPD
V
Decoder
IL
Power-Up/Down Reset Timing
DD
. Systems with an inordinate
© 2006 Microchip Technology Inc.
STH
, V
STL
DD
)
(such as systems
t
RST
Microprocessor
Address
Reset
V
IH