TC1232EOA Microchip Technology, TC1232EOA Datasheet - Page 8

• Manufacturer Part Number: TC1232EOA
• Description: IC MPU MONITOR 4.5V 8-SOIC
• Manufacturer: Microchip Technology
• Type: Simple Reset/Power-On Resetr

Specifications of TC1232EOA

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active High/Active Low
• Reset Timeout: 250 ms Minimum
• Voltage - Threshold: 4.37V, 4.62V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Threshold Voltage: 4.37V
• No. Of Supervisors / Monitors: 1
• Supply Voltage Range: 4.5V To 5.5V
• Reset Type: Active-High / Active-Low
• Supply Current: 50µA
• Delay Time: 610ms
• Digital Ic Case Style: SOIC
• Monitored Voltage: 4.5 V to 4.75 V
• Undervoltage Threshold: 4.5 V, 4.25 V
• Overvoltage Threshold: 4.74 V or 4.49 V
• Output Type: Active High, Active Low, Open Drain, Push-Pull
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 1000 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4 V
• Supply Current (typ): 200 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

TC1232
4.2
The debounced manual reset input (PB RST) manually
forces the reset outputs into their active states.
Figure 4-5 shows a block diagram for using the
TC1232 with a push button switch.
Once PB RST has been low for a time t
button delay time), the reset outputs go active. The
reset outputs remain in their active states for a
minimum of 250 ms after PB RST rises above V
Figure 4-6 shows a waveform for the push button
switch input and the reset pins output.
A mechanical push button or active logic signal can
drive the PB RST input. The debounced input ignores
input pulses less than 1 ms and recognizes pulses of
20 ms or greater. No external pull-up resistor is
required because the PB RST input has an internal
pull-up to V
DS21370C-page 8
Push Button Reset Input
CC
of approximately 100 µA.
PBD
(the push-
Preliminary
IH
.
FIGURE 4-5:
Watchdog Timer.
FIGURE 4-6:
PB RST Input.
PB RST
RST
RST
The debounced PB RST input ignores input pulses less
than 1 ms and is designed to recognize pulses of
20 ms or greater.
V
IL
t
PB RST
PBD
+5V
V
CC
GND
TC1232
t
PB
Push Button Reset and
Push Button Reset –
© 2005 Microchip Technology Inc.
TOL
RST
TD
ST
V
IH
I/O
Reset
Microprocessor
t
RST