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CAT1025ZD2E-45

更新时间： 2024-11-15 03:05:55
品牌 Logo 应用领域
CATALYST /
页数 文件大小 规格书
17页 100K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO8, LEAD AND HALOGEN FREE, 3 X 4.90 MM, 0.80 MM HEIGHT, MO-229, TDFN-8

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CAT1025ZD2E-45 数据手册

 浏览型号CAT1025ZD2E-45的Datasheet PDF文件第2页浏览型号CAT1025ZD2E-45的Datasheet PDF文件第3页浏览型号CAT1025ZD2E-45的Datasheet PDF文件第4页浏览型号CAT1025ZD2E-45的Datasheet PDF文件第5页浏览型号CAT1025ZD2E-45的Datasheet PDF文件第6页浏览型号CAT1025ZD2E-45的Datasheet PDF文件第7页 
Preliminary Information  
E
CAT1024, CAT1025  
Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM and Manual Reset  
TM  
FEATURES  
■ 16-Byte page write buffer  
■ Built-in inadvertent write protection  
— WP pin (CAT1025)  
■ Precision power supply voltage monitor  
— 5V, 3.3V and 3V systems  
— Five threshold voltage options  
■ Active high or low reset  
■ 1,000,000 Program/Erase cycles  
■ Manual reset input  
■ 100 year data retention  
— Valid reset guaranteed at VCC = 1V  
■ 400kHz I2C bus  
■ 8-pin DIP, SOIC, TSSOP, MSOP & TDFN  
(3x4.9mm & 3x3mm foot print) packages  
■ 2.7V to 5.5V operation  
■ Industrial and extended temperature ranges  
■ Low power CMOS technology  
DESCRIPTION  
voltages support 5V, 3.3V and 3V systems. If power supply  
voltages are out of tolerance reset signals become 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 signals, interface  
to microcontrollers and other ICs is simple. In addition, the  
RESET pin or a separate input, MR, can be used as an input  
for push-button manual reset capability.  
The CAT1024 and CAT1025 are complete memory and  
supervisorysolutionsformicrocontroller-basedsystems.  
A 2k-bit 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 CAT1025 provides a precision VCC sense circuit  
and two open drain outputs: one (RESET) drives high  
and the other (RESET) drives low whenever VCC falls  
below the reset threshold voltage. The CAT1025 also  
has a Write Protect input (WP). Write operations are  
disabled if WP is connected to a logic high.  
The CAT1024/25 memory features a 16-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 CAT1024 also provides a precision VCC sense  
circuit, but has only a RESET output and does not have  
a Write Protect input.  
Available packages include an 8-pin DIP and a surface  
mount8-pinSO,8-pinTSSOP,8-pinTDFNand8-pinMSOP  
packages.TheTDFNpackagethicknessis0.8mmmaximum.  
TDFN footprint options are 3x3mm or 3x4.9mm (MSOP pad  
layout).  
The power supply monitor and reset circuit protect  
memory and system controllers during power up/down  
and against brownout conditions. Five reset threshold  
PIN CONFIGURATION  
DIP Package (P, L)  
(Bottom View)  
TDFN Package: 3mm x 3mm  
0.8mm maximum height - (RD4, ZD4)  
(Bottom View)  
TDFN Package: 3mm x 4.9mm  
0.8mm maximum height - (RD2, ZD2)  
SOIC Package (S, V)  
TSSOP Package (U, Y)  
MSOP Package (R, Z)  
V
MR  
1
2
3
4
8
7
6
5
8
7
6
5
1
V
MR  
CC  
NC  
MR  
V
1
2
3
4
8
7
6
5
CC  
NC  
CC  
RESET  
NC  
RESET 2  
NC  
RESET  
NC  
CAT1024  
CAT1025  
CAT1024  
CAT1024  
SCL  
SDA  
NC  
3
4
SCL  
SDA  
SCL  
SDA  
V
SS  
V
SS  
V
SS  
V
MR  
8
7
6
5
V
MR  
1
1
1
2
3
4
8
8
7
6
5
MR  
V
CC  
CC  
CC  
WP  
SCL  
SDA  
RESET  
RESET  
WP  
SCL  
SDA  
7
6
5
2
3
4
RESET  
RESET  
RESET 2  
WP  
CAT1025  
CAT1025  
3
4
SCL  
SDA  
RESET  
V
V
SS  
V
SS  
SS  
© 2004 by Catalyst Semiconductor, Inc.  
Doc No. 3008, Rev. J  
Characteristics subject to change without notice  
1234567...17

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