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CAT1641YI-30TE13

更新时间： 2024-11-05 23:00:39
品牌 Logo 应用领域
CATALYST 光电二极管监控可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数 文件大小 规格书
18页 127K
描述
Supervisory Circuits with I2C Serial 64K CMOS EEPROM

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CAT1641YI-30TE13 数据手册

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E
CAT1640, CAT1641  
Supervisory Circuits with I2C Serial 64K CMOS EEPROM  
E TM  
R
FEATURES  
■ 3.0V to 5.5V operation  
■ Precision power supply voltage monitor  
■ Low power CMOS technology  
■ 64-Byte page write buffer  
■ 1,000,000 Program/Erase cycles  
■ 100 year data retention  
— 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 at VCC=1V  
■ 400kHz I2C bus  
■ 8-pin DIP, SOIC, TSSOP and TDFN packages  
■ Industrial temperature range  
DESCRIPTION  
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 and CAT1641 are complete memory and  
supervisorysolutionsformicrocontroller-basedsystems.  
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 I2C bus.  
The CAT1640 provides a precision VCC sense circuit  
and drives an open drain output, RESET low whenever  
VCC falls below the reset threshold voltage.  
The CAT1640/41 memory features a 64-byte page. In  
addition, hardware data protection is provided by a VCC  
sense circuit that prevents writes to memory whenever VCC  
falls below the reset threshold or until VCC reaches the reset  
threshold during power up.  
The CAT1641 provides a precision VCC sense circuit  
thatdrivesanopendrainoutput, RESEThighwhenever  
VCC falls below the reset threshold voltage.  
Available packages include an 8-pin DIP, SOIC, TSSOP  
and 4.9 x 3mm TDFN.  
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  
supplyvoltagesareoutoftoleranceresetsignalsbecome  
PIN CONFIGURATION  
TDFN PACKAGE: 4.9MM X 3MM  
(RD2, ZD2)  
PDIP (P, L) SOIC (J, W)  
TSSOP (U, Y)  
1
2
3
4
8
7
6
5
A0  
A1  
A2  
V
CC  
8
7
6
5
8
7
6
5
1
2
3
4
1
A0  
A1  
A2  
V
A0  
V
CC  
CC  
RESET  
SCL  
A1 2  
A2 3  
RESET  
SCL  
RESET  
CAT1640  
CAT1640  
CAT1640  
SCL  
V
V
SDA  
V
SDA  
4
SS  
SDA  
SS  
SS  
1
A0  
A1  
A2  
8
7
6
5
V
8
7
6
5
1
8
7
6
5
1
A0  
A1  
A2  
V
CC  
A0  
V
CC  
CC  
2
3
4
2
3
4
RESET  
SCL  
A1  
A2  
RESET  
SCL  
2
3
4
RESET  
CAT1641  
CAT1641  
CAT1641  
SCL  
SDA  
V
SDA  
V
V
SS  
SDA  
SS  
SS  
© 2005 by Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
Doc. No. 25082, Rev. 00  
1
1234567...18

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