CAT1021WI-42

更新时间： 2024-11-22 05:17:19

品牌	Logo	应用领域
CATALYST		电源电路电源管理电路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
21页	278K
描述
Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer

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CAT1021WI-42 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	SOIC	包装说明：	SOP, SOP8,.25
针数：	8	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.07	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY MANAGEMENT CIRCUIT	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3	长度：	4.9 mm
信道数量：	1	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	电源：	3.3/5 V
认证状态：	Not Qualified	座面最大高度：	1.75 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	3 mA
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	3.9 mm
Base Number Matches：	1

CAT1021WI-42 数据手册

CAT1021, CAT1022, CAT1023

Supervisory Circuits with I²C Serial 2k-bit CMOS

EEPROM, Manual Reset and Watchdog Timer

FEATURES

DESCRIPTION

The CAT1021, CAT1022 and CAT1023 are complete

memory and supervisory solutions for microcontroller-

based systems. 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.

ꢀ Precision Power Supply Voltage Monitor

— 5V, 3.3V and 3V systems

— Five threshold voltage options

ꢀ Watchdog Timer

ꢀ Active High or Low Reset

— Valid reset guaranteed at V_CC= 1V

ꢀ 400kHz I²C Bus

The CAT1021 and CAT1023 provide a precision V_CC

sense circuit and two open drain outputs: one (RESET)

¯¯¯¯¯¯

drives high and the other (RESET) drives low whenever

ꢀ 2.7V to 5.5V Operation

V_CCfalls below the reset threshold voltage. The

ꢀ Low power CMOS technology

ꢀ 16-Byte Page Write Buffer

ꢀ Built-in inadvertent write protection

— WP pin (CAT1021)

¯¯¯¯¯¯

CAT1022 has only a RESET output and does not have

a Write Protect input. The CAT1021 also has a Write

Protect input (WP). Write operations are disabled if WP

is connected to a logic high.

All supervisors have a 1.6 second watchdog timer circuit

that resets a system to a known state if software or a

hardware glitch halts or “hangs” the system. For the

CAT1021 and CAT1022, the watchdog timer monitors

the SDA signal. The CAT1023 has a separate watchdog

timer interrupt input pin, WDI.

ꢀ 1,000,000 Program/Erase cycles

ꢀ Manual Reset Input

ꢀ 100 year data retention

ꢀ Industrial and extended temperature ranges

ꢀ 8-pin DIP, SOIC, TSSOP, MSOP or 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

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

(3 x 3 mm foot-print) packages

— TDFN max height is 0.8mm

¯¯¯¯¯¯

other ICs is simple. In addition, the RESET pin or a

¯¯¯

separate input, MR, can be used as an input for push-

For Ordering Information details, see page 19.

button manual reset capability.

The on-chip, 2k-bit EEPROM memory features a 16-byte

page. In addition, hardware data protection is provided

by a V_CCsense circuit that prevents writes to memory

whenever V_CCfalls below the reset threshold or until V_CC

reaches the reset threshold during power up.

Available packages include an 8-pin DIP and surface

mount 8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin

MSOP packages. The TDFN package thickness is

0.8mm maximum. TDFN footprint options are 3x3mm.

Characteristics subject to change without notice

Doc. No. 3009 Rev. L

12 3 4 5 6 7...21

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CAT1021WI-42 替代型号

型号	品牌	替代类型	描述	数据表
CAT1021JE-42	CATALYST	功能相似	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, SOIC-8
CAT1021JE-42TE13	CATALYST	功能相似	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer

与CAT1021WI-42相关器件

型号	品牌	获取价格	描述	数据表
CAT1021WI-42-GT2	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42-GT3	ONSEMI	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS
CAT1021WI-42-GT3	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42T2	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42-T2	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42T3	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42-T3	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42TE13	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer
CAT1021WI-42TE13	ONSEMI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, LEAD AND HALOGEN FREE, SOIC-8
CAT1021WI-45	CATALYST	获取价格	Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer

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