TC1232COE Microchip Technology, TC1232COE Datasheet

TC1232COE

Manufacturer Part Number

TC1232COE

Description

IC MPU MONITOR 4.5V 16-SOIC

Manufacturer

Microchip Technology

Type

Simple Reset/Power-On Resetr

Datasheets

1.TC1232CPA.pdf (20 pages)

2.TC1232CPA.pdf (16 pages)

Specifications of TC1232COE

Number Of Voltages Monitored

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

Surface Mount

Package / Case

16-SOIC (0.300", 7.5mm Width)

Threshold Voltage

4.37V

No. Of Supervisors / Monitors

Supply Voltage Range

4V To 5.5V

Reset Type

Active-High / Active-Low

Supply Current

50ÂµA

Delay Time

1200ms

Digital Ic Case Style

SOIC

Monitored Voltage

4.5 V to 4.75 V

Undervoltage Threshold

4.5 V, 4.25 V

Output Type

Active High, Active Low, Open Drain, Push-Pull

Manual Reset

Resettable

Watchdog

Battery Backup Switching

No Backup

Supply Voltage (max)

5.5 V

Supply Voltage (min)

4 V

Supply Current (typ)

200 uA

Maximum Operating Temperature

+ 70 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

0 C

Power Fail Detection

Yes

Overvoltage Threshold

4.74 V or 4.49 V

Power-up Reset Delay (typ)

1000 ms

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

TC1232COE

Manufacturer:

TELCOM

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

TC1232COE713

Manufacturer:

MICROCHIP

Quantity:

12 000

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Download datasheet (263Kb)

Features

• Precision Voltage Monitor

• Reset Pulse Width – 250 msec minimum

• No External Components

• Adjustable Watchdog Timer

• Operating Voltage 4.0V to 5.5V

• Debounced Manual Reset Input for External

Block Diagram

Package Types

Device Features

PB RST

TC1232

Device

- Adjustable +4.5V or +4.75V

- 150 msec, 600 msec or 1.2 sec

Override

TOL

PB RST

GND

TOL

(5% or 10%)

Debounce

Watchdog

Timebase

Open-drain

Tolerance

Select

Type

8-Pin PDIP

REF

–

TC1232

Watchdog

RST pin

–

Timer

Resistor

External

Pull-up

Generator

Reset

Microprocessor Monitor

RST

Active

Level

Low

PB RST

GND

Push-pull

TOL

Type

RST pin

RST

Preliminary

8-Pin SOIC

TC1232

Active

Level

High

General Description

The TC1232 is a fully-integrated processor supervisor

that provides three important functions to safeguard

processor sanity: precision power on/off reset control,

watchdog timer and external reset override.

On power-up, the TC1232 holds the processor in the

reset state for a minimum of 250 msec after V

within tolerance to ensure a stable system start-up.

Microprocessor sanity is monitored by the onboard

watchdog circuit. The microprocessor must provide a

periodic low-going signal on the ST input. Should the

processor fail to supply this signal within the selected

time-out period (150 msec, 600 msec or 1200 msec),

an out-of-control processor is indicated and the

TC1232 issues a processor reset as a result.

The outputs of the TC1232 are immediately driven

active when the PB input is brought low by an external

push button switch or other electronic signal. When

connected to a push button switch, the TC1232

provides contact debounce.

The TC1232 is packaged in a space-saving 8-Pin PDIP

or SOIC package, a 16-Pin SOIC (wide) package and

requires no external components.

Trip Points

or 4.5V

(Max)

4.75V

RST

PB RST

Active Time

GND

Minimum

TOL

Reset

(ms)

250

TC1232

16-Pin SOIC (Wide)

TC1232

Timeouts (ms)

150, 600 or

WDI Input

Typical

1200

DS21370C-page 1

VCC

RST

Input

Yes

Related parts for TC1232COE

TC1232COE Summary of contents

Page 1

... Type Resistor Level TC1232 Open-drain External © 2005 Microchip Technology Inc. General Description The TC1232 is a fully-integrated processor supervisor that provides three important functions to safeguard processor sanity: precision power on/off reset control, watchdog timer and external reset override. On power-up, the TC1232 holds the processor in the reset state for a minimum of 250 msec after V within tolerance to ensure a stable system start-up ...

Page 2

... OL — 50 200 µA CC 4.50 4.62 4.74 V 4.25 4.37 4. +25°C. (Note 4) A — — — — OUT with an internal impedance of typically Preliminary = +4.0V to 5.5V. Conditions Note 2. 0.4V OL Note 2 TOL = GND (Note 3) TOL = V (Note 3) CC © 2005 Microchip Technology Inc. ...

Page 3

... CC V Rise Time CC V Trip Point Detected t CC RPD to RST High and RST Low V Trip Point Detected t CC RPU to RST High and RST Open Note 1: Ensured by design µs. R © 2005 Microchip Technology Inc RPD RST RST MIN MAX CC Min Typ Max ...

Page 4

... ST 62.5 150 250 ms TD 250 600 1000 ms 500 1200 2000 ms Preliminary (min)) “H” (min (max (max)) TD “L” t (min (min (max (max +4.0V to 5.5V. Conditions Note 1 TD Pin = 0V TD Pin = Open TD Pin = V CC © 2005 Microchip Technology Inc. ...

Page 5

Page 6

... TD pin) 4. During power-up Strobe Input Input for Watchdog Timer. WDT period determined by state of TD pin Falling Edge Resets Watchdog Timer counter (no time-out) The positive supply (+5V) for the device. No internal connection. Preliminary ) = 4.75V (5% tolerance) CCTP ) = 4.5V (10% tolerance) © 2005 Microchip Technology Inc. ...

Page 7

... +4.75V +4.25V FIGURE 4-1: Power-Down Slew Rate +4.75V +4.25V V CC FIGURE 4-2: Power-up Slew Rate. © 2005 Microchip Technology Inc detected RST RST V SLEW RATE = 1.66 mV/µs (0.5V/300 µs) CC FIGURE 4-3: Delay (Power-Down RST ...

Page 8

... The debounced PB RST input ignores input pulses less than 1 ms and is designed to recognize pulses greater. FIGURE 4-6: PB RST Input. Preliminary + RST I/O TC1232 Microprocessor RST Reset GND TOL Push Button Reset and t PB PBD RST Push Button Reset – © 2005 Microchip Technology Inc. ...

Page 9

... MCP1700) TC1232 ST TD TOL GND FIGURE 4-7: Watchdog Timer. © 2005 Microchip Technology Inc. Figure 4-8 shows the expected reset output pin wave- forms depending on the period of the ST pin falling edge and the state of the TD input pin (typ.). The CC ...

Page 10

... DS21370C-page 10 Examples: TC1232 TC1232 OR I/P256 CPA^^256 0518 Examples: TC1232 COA0518 OA^^0518 OR 256 Examples: TC1232COE XXXXXXXXXX OR 0518256 Preliminary e 3 0518 TC1232E e 3 256 e 3 TC1232COE^^ XXXXXXXXXX 0518256 © 2005 Microchip Technology Inc. ...

Page 11

... Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-001 Drawing No. C04-018 © 2005 Microchip Technology Inc ...

Page 12

... Preliminary A2 MILLIMETERS MIN NOM MAX 8 1.27 1.35 1.55 1.75 1.32 1.42 1.55 0.10 0.18 0.25 5.79 6.02 6.20 3.71 3.91 3.99 4.80 4.90 5.00 0.25 0.38 0.51 0.48 0.62 0. 0.20 0.23 0.25 0.33 0.42 0. © 2005 Microchip Technology Inc. ...

Page 13

... Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-013 Drawing No. C04-102 © 2005 Microchip Technology Inc Units INCHES* ...

Page 14

Page 15

... Corrected Operating Voltage in the Electrical Specifications 3. General Data Sheet Enhancements 4. Added Revision History Appendix Section Revision B (March 2003) • Not logged Revision A (March 2002) • Original Release of this Document. © 2005 Microchip Technology Inc. was Preliminary TC1232 DS21370C-page 15 ...

Page 16

Page 17

... OE713 = Plastic SOIC (300 mil Body), 16-lead Tape and Reel © 2005 Microchip Technology Inc. Examples: a) TC1232COA: b) TC1232COA713: 0°C to +70°C, 8L-SOIC, c) TC1232COE: d) TC1232COE713: 0°C to +70°C, 16L-SOIC e) TC1232CPA: f) TC1232EOA: g) TC1232EOA713: -40°C to +85°C, h) TC1232EOE: i) TC1232EOE713: -40°C to +85°C, j) TC1232EPA: Preliminary TC1232 ...

Page 18

Page 19

... PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 20

... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 Preliminary © 2005 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4450-2828 Fax: 45-4485-2829 France - Massy Tel: 33-1-69-53-63-20 ...

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