CAT1640WI-25-G ON Semiconductor, CAT1640WI-25-G Datasheet

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CAT1640WI-25-G

Manufacturer Part Number
CAT1640WI-25-G
Description
Supervisory Circuits CPU w/64K
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAT1640WI-25-G

Number Of Voltages Monitored
1
Monitored Voltage
3 V, 3.3 V, 5 V
Output Type
Active Low, Open Drain
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Supply Voltage (max)
5.5 V
Supply Voltage (min)
3 V
Supply Current (typ)
3000 uA
Maximum Power Dissipation
1000 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8 Wide
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Undervoltage Threshold
2.55 V
Overvoltage Threshold
2.7 V
Power-up Reset Delay (typ)
270 ms
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice.
Supervisory Circuits with I
CMOS EEPROM
DESCRIPTION
The CAT1640 and CAT1641 are complete memory and
supervisory solutions for microcontroller-based systems.
A 64kbit serial EEPROM memory and a system power
supervisor with brown-out protection are integrated
together in low power CMOS technology. Memory
interface is via a 400kHz I
The CAT1640 provides a precision V
and drives an open drain output, RESET low whenever
V
The CAT1641 provides a precision VCC sense circuit
that drives an open drain output, RESET high whenever
VCC falls below the reset threshold voltage.
The power supply monitor and reset circuit protect
memory and system controllers during power up/down
and against brownout conditions. Five reset threshold
voltages support 5V, 3.3V and 3V systems. If power
supply voltages are out of tolerance reset signals become
PIN CONFIGURATION
FEATURES
CC
Precision power supply voltage monitor
— 5V, 3.3V and 3V systems
Active low reset, CAT1640
Active high reset, CAT1641
Valid reset guaranteed at V
400kHz I
falls below the reset threshold voltage.
V SS
V SS
A0
A1
A2
A0
A1
A2
- +5.0V (+/- 5%, +/- 10%)
- +3.3V (+/- 5%, +/- 10%)
- +3.0V (+/- 10%)
PDIP (L) SOIC (W)
1
2
3
4
1
2
3
4
2
C bus
CAT1641
CAT1640
8
7
6
5
2
8
7
6
5
C bus.
V CC
RESET
SCL
SDA
V CC
RESET
SCL
SDA
CC
=1V
CC
V SS
sense circuit
V SS
A0
A1
A2
A0
A1
A2
1
2
3
4
1
2
3
4
TSSOP (Y)
CAT1640
CAT1641
active, preventing the system microcontroller, ASIC or
peripherals from operating. Reset signals become inactive
typically 200 ms after the supply voltage exceeds the reset
threshold level. With both active high and low reset options,
interface to microcontrollers and other ICs is simple. In
addition, the RESET (CAT1640) pin can be used as an
input for push-button manual reset capability.
The CAT1640/41 memory features a 64-byte page. In
addition, hardware data protection is provided by a V
sense circuit that prevents writes to memory whenever V
falls below the reset threshold or until V
threshold during power up.
Available packages include an 8-pin DIP, SOIC, TSSOP
and 4.9 x 3mm TDFN.
1
2
C Serial 64K
3.0V to 5.5V operation
Low power CMOS technology
64-Byte page write buffer
1,000,000 Program/Erase cycles
100 year data retention
8-pin DIP, SOIC, TSSOP and TDFN packages
Industrial temperature range
8
7
6
5
8
7
6
5
V CC
RESET
SCL
SDA
V CC
RESET
SCL
SDA
CAT1640, CAT1641
TDFN PACKAGE: 4.9MM X 3MM
V SS
V SS
A0
A1
A2
A0
A1
A2
1
2
3
4
1
2
3
4
CAT1641
CAT1640
CC
(ZD2)
reaches the reset
Doc. No. MD-3012, Rev. D
8
7
6
5
8
7
6
5
V CC
RESET
SCL
SDA
V CC
RESET
SCL
SDA
CC
CC
TM

Related parts for CAT1640WI-25-G

CAT1640WI-25-G Summary of contents

Page 1

... Supervisory Circuits with I CMOS EEPROM FEATURES Precision power supply voltage monitor — 5V, 3.3V and 3V systems - +5.0V (+/- 5%, +/- 10%) - +3.3V (+/- 5%, +/- 10%) - +3.0V (+/- 10%) Active low reset, CAT1640 Active high reset, CAT1641 Valid reset guaranteed 400kHz I C bus DESCRIPTION The CAT1640 and CAT1641 are complete memory and supervisory solutions for microcontroller-based systems ...

Page 2

CAT1640, CAT1641 BLOCK DIAGRAM — CAT1640, CAT1641 EXTERNAL LOAD D OUT ACK V CC WORD ADDRESS V SS BUFFERS START/STOP SDA LOGIC XDEC CONTROL LOGIC RESET Controller Precision Vcc Monitor RESET (CAT1640) RESET (CAT1641) PIN FUNCTIONS Pin Name Function RESET ...

Page 3

ABSOLUTE MAXIMUM RATINGS Temperature Under Bias .................... - +85 C Storage Temperature ........................ - +105 C Voltage on any Pin with (1) Respect to Ground ............. -0. with Respect to Ground ................ -0.5V ...

Page 4

CAT1640, CAT1641 CAPACITANCE 1.0 MHz Symbol Test (1) C Output Capacitance OUT (1) C Input Capacitance IN A.C. CHARACTERISTICS V = 3.0V to 5.5V and over the recommended temperature ...

Page 5

RESET CIRCUIT A.C. CHARACTERISTICS ...

Page 6

CAT1640, CAT1641 DEVICE OPERATION Reset Controller Description The CAT1640/41 precision RESET controllers ensure correct system operation during brownout and power up/down conditions. They are configured with open- drain RESET/RESET outputs. During power-up, the RESET/RESET output remains active until V reaches ...

Page 7

RESET RESET Figure 2. RESET RESET RESET as Manual Reset Input Operation and Timing RESET (Input) RESET (Output) Figure 3. Bus Timing t F SCL t SU:STA SDA IN SDA OUT © 2009 SCILLC. All rights reserved. Characteristics subject to ...

Page 8

CAT1640, CAT1641 EMBEDDED EEPROM OPERATION The CAT1640 and CAT1641 feature a 64kbit embedded serial EEPROM that supports the I data transmission protocol. This Inter-Integrated Circuit Bus protocol defines any device that sends data to the bus transmitter ...

Page 9

ACKNOWLEDGE After a successful data transfer, each receiving device is required to generate an acknowledge. The acknowledging device pulls down the SDA line during the ninth clock cycle, signaling that it received the 8 bits of data. The CAT1640/41 responds ...

Page 10

CAT1640, CAT1641 Page Write The CAT1640/41 writes bytes of data in a single write cycle, using the Page Write operation. The page write operation is initiated in the same manner as the byte write operation, however instead ...

Page 11

Acknowledge Polling Disabling of the inputs can be used to take advantage of the typical write cycle time. Once the stop condition is issued to indicate the end of the host’s write opration, the CAT1640/41 initiates the internal write cycle. ...

Page 12

CAT1640, CAT1641 Immediate/Current Address Read The CAT1640 and CAT1641 address counter contains the address of the last byte accessed, incremented by one. In other words, if the last READ or WRITE access was to address N, the READ immediately following ...

Page 13

PACKAGE OUTLINE DRAWINGS PDIP 8-Lead 300mils (L) PIN # 1 IDENTIFICATION D TOP VIEW SIDE VIEW Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-001. © 2009 SCILLC. All rights ...

Page 14

CAT1640, CAT1641 SOIC 8-Lead 150mils (W) PIN # 1 IDENTIFICATION TOP VIEW D e SIDE VIEW Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-012. Doc. No. MD-3012, Rev. D SYMBOL A A1 ...

Page 15

TSSOP 8-Lead 4.4mm ( TOP VIEW D SIDE VIEW Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-153. © 2009 SCILLC. All rights reserved. Characteristics subject to change without notice. SYMBOL ...

Page 16

CAT1640, CAT1641 TDFN-S-MSOP 8-Pad 3 x 4.9mm (ZD2) D PIN #1 IDENTIFICATION TOP VIEW SYMBOL MIN A 0.70 A1 0.00 A2 0.45 A3 0.20 REF b 0.25 D 2.90 D2 0.90 E 4.80 E2 0.90 e 0.65 TYP L 0.50 ...

Page 17

... All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. (3) The device used in the above example is a CAT1640WI-30-GT3 (SOIC, Industrial Temperature, 3.0 - 3.15V, NiPdAu, Tape & Reel, 3,000/Reel). (4) For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. ...

Page 18

... Update Example of Ordering Information Add Ordering Part Number Change document number from 25082, Rev.00 12-Nov-08 C Change logo and fine print to ON Semiconductor 14-Jul-09 D Update Ordering Information table ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...

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