TC1232CPA Microchip Technology, TC1232CPA Datasheet - Page 6

• Manufacturer Part Number: TC1232CPA
• Description: IC MPU MONITOR 4.5V 8-DIP
• Manufacturer: Microchip Technology
• Type: Simple Reset/Power-On Resetr

Specifications of TC1232CPA

• Number Of Voltages Monitored: 1
• Package / Case: 8-DIP (0.300", 7.62mm)
• Output: Open Drain or Open Collector
• Reset: Active High/Active Low
• Reset Timeout: 250 ms Minimum
• Voltage - Threshold: 4.37V, 4.62V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Chip Enable Signals: No
• Minimum Operating Temperature: 0 C
• Operating Supply Voltage: 5 V
• Operating Temperature Range: 0 C to + 70 C
• Output Type: Active High or Active Low or Open Drain or Push-Pull
• Power Fail Detection: Yes
• Monitored Voltage: 4.5 V to 4.75 V
• Undervoltage Threshold: 4.5 V or 4.25 V
• Overvoltage Threshold: 4.74 V or 4.49 V
• Manual Reset: Resettable
• Watchdog: Yes
• Battery Backup Switching: No
• Power-up Reset Delay (typ): 1000 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4 V
• Supply Current (typ): 200 uA
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 70 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 158-1042; 158-1042

TC1232
3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
DS21370C-page 6
PDIP,
SOIC
8-pin
—
1
2
3
4
5
6
7
8
Pin No.
16-pin
7,10,1
1,3,5,
SOIC
PIN DESCRIPTIONS
2,16
11
13
15
2
4
6
8
9
Symbol
PB RST
GND
PIN FUNCTION TABLES
TOL
RST
RST
V
NC
TD
ST
CC
Type
Pin
—
—
—
O
O
I
I
I
I
Buffer/
Driver
Open
Drain
Type
Push
Pull
ST
ST
ST
ST
—
P
P
Push-button Reset Input.
Input for a Manual Reset Switch. This input debounces (ignores) pulses
less than 1 ms in duration and is ensured to recognize inputs of 20 ms or
greater.
L = Manual Reset Switch is Active, Force RST/RST pins Active
H = Manual Reset Switch is Inactive. State of RST/RST pins determined by
other system conditions.
Time Delay Input.
The voltage level on this input determines the watchdog timer time-out
period.
TD = 0V
TD = Open
TD = V
Tolerance Input.
TOL = GND, Max Voltage Trip Point (V
TOL = V
The ground reference for the device.
Reset Output (Active-High)
Goes active (High) if one of these conditions occurs:
1.
2.
3.
4.
Reset Output (Active-Low)
Goes active (Low) if one of these conditions occurs:
1.
2.
3.
4.
Strobe Input
Input for Watchdog Timer. WDT period determined by state of TD pin
Falling Edge
The positive supply (+5V) for the device.
No internal connection.
If V
If PB RST pin is forced low.
If ST pin is not strobed within the minimum selected time-out period.
(see TD pin)
During power-up
If V
If PB RST pin is forced low.
If ST pin is not strobed within the minimum selected time-out period.
(see TD pin)
During power-up
CC
CC
CC
CC
Preliminary
, Max Voltage Trip Point (V
falls below the selected reset voltage threshold.
falls below the selected reset voltage threshold.
Resets Watchdog Timer counter (no time-out)
t
t
t
TD
TD
TD
= 150 ms
= 600 ms
= 1.2 sec
Function
CCTP
CCTP
) = 4.5V (10% tolerance)
) = 4.75V (5% tolerance)
© 2005 Microchip Technology Inc.