CAT1641 Catalyst Semiconductor, CAT1641 Datasheet

no-image

CAT1641

Manufacturer Part Number
CAT1641
Description
Voltage Supervisor With I?c Serial 64k Cmos Eeprom
Manufacturer
Catalyst Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CAT1641LI-28-G
Manufacturer:
ONSemiconductor
Quantity:
2 000
Part Number:
CAT1641LI-30-G
Manufacturer:
ONSemiconductor
Quantity:
2 000
Part Number:
CAT1641LI-42-G
Manufacturer:
ONSemiconductor
Quantity:
2 000
Part Number:
CAT1641LI-45-G
Manufacturer:
ONSemiconductor
Quantity:
2 000
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT1640, CAT1641
Supervisory Circuits with I
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
8
7
6
5
2
C bus.
V CC
RESET
SCL
SDA
V CC
RESET
SCL
SDA
CC
=1V
2
C Serial 64K CMOS EEPROM
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
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
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. B
8
7
6
5
8
7
6
5
V CC
RESET
SCL
SDA
V CC
RESET
SCL
SDA
CC
CC
TM

Related parts for CAT1641

CAT1641 Summary of contents

Page 1

... CC 2 400kHz I C bus 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 2 interface is via a 400kHz I C bus ...

Page 2

... Pin Name Function RESET Active Low Reset Input/Output (CAT1640) V Ground SS SDA Serial Data/Address SCL Clock Input RESET Active High Reset Output (CAT1641) V Power Supply CC PIN DESCRIPTION RESET RESET RESET: RESET RESET/RESET RESET OUTPUTS These are open-drain pins and RESET can also be used as a manual reset trigger input ...

Page 3

... CAT1640, CAT1641 ...

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 conditions, unless otherwise specified & ...

Page 5

... Reference Test Method MIL-STD-883, Test Method 1033 1,000,000 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 3015 JEDEC Standard 17 5 CAT1640, CAT1641 ...

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 the V CC ...

Page 7

... 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 t MRW t HIGH LOW t LOW t HD:DAT t HD:STA t SU:DAT CAT1640, CAT1641 t PURST t SU:STO t BUF Doc No. MD-3012, Rev. B ...

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 and any device receiving data receiver. The transfer is ...

Page 9

... STOP condition. At this time, the device begins an internal programming cycle to non-volatile memory. While the cycle is in progress, the device will not respond to any request from the Master device. 1 START CAT1640, CAT1641 STOP BIT 8 9 ACKNOWLEDGE R/W Doc No. MD-3012, Rev. B ...

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 of terminating after the initial byte is transmitted, the Master is allowed to send up to additional 63 bytes ...

Page 11

... R/W bit is set to one. Three different READ operations are possible: Immediate/Current Address READ, Selective/Random READ and Sequential READ SLAVE R ADDRESS 8TH BIT DATA OUT NO ACK 11 CAT1640, CAT1641 DATA STOP Doc No. MD-3012, Rev. B ...

Page 12

... Master device sends the START condition and the slave address again, this time with the R/W bit set to one. The CAT1640 and CAT1641 then responds with its acknowledge and sends the 8-bit byte requested. The master device does not send an acknowledge but will generate a STOP condition ...

Page 13

... For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-001. SYMBOL CAT1640, CAT1641 MIN NOM MAX 5.33 0.38 2.92 3.30 4.95 0.36 0.46 0.56 1.14 1.52 1.78 0.20 0.25 0.36 9.02 9.27 10.16 7.62 7.87 8.25 2.54 BSC 6 ...

Page 14

... CAT1640, CAT1641 SOIC 8-Lead 150mils (W) PIN # 1 IDENTIFICATION TOP VIEW D e SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-012. Doc. No. MD-3012, Rev. B SYMBOL ...

Page 15

... For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes dimensions are in millimeters. Angles in degrees. 2. Complies with JEDEC standard MS-153. SYMBOL θ θ CAT1640, CAT1641 MIN NOM MAX 1.20 0.05 0.15 0.80 0.90 1.05 0.19 0.30 0.09 0.20 2.90 3.00 3.10 6.30 6.40 6.50 4.30 4.40 4.50 0.65 BSC 1.00 REF 0.50 ...

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 For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes dimensions are in millimeters. Angles in degrees. ...

Page 17

... CAT1640, CAT1641 - Tape & Reel T: Tape & Reel 3: 3000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu Doc No. MD-3012, Rev. B ...

Page 18

... Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. ...

Related keywords