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CAT1026LI-30 PDF预览

CAT1026LI-30

更新时间: 2024-11-15 05:17:23
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
20页 314K
描述
Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM

CAT1026LI-30 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:DIP包装说明:DIP, DIP8,.3
针数:8Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.08可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDIP-T8
JESD-609代码:e3长度:9.59 mm
信道数量:2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:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
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:4.57 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):3.3 V表面贴装:NO
技术:CMOS温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:7.62 mm
Base Number Matches:1

CAT1026LI-30 数据手册

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CAT1026, CAT1027  
Dual Voltage Supervisory Circuits with  
I2C Serial 2k-bit CMOS EEPROM  
supply monitor and reset circuit protects memory and  
FEATURES  
systems controllers during power up/down and  
against brownout conditions. If power supply voltages  
are out of tolerance reset signals become active  
preventing the system microcontroller, ASIC, or  
peripherals from operating.  
Precision VCC Power Supply Voltage Monitor  
5V, 3.3V and 3V systems  
Five threshold voltage options  
Additional voltage monitoring  
Externally adjustable down to 1.25V  
Watchdog timer (CAT1027 only)  
Active High or Low Reset  
The CAT1026 features two open drain reset outputs:  
¯¯¯¯¯¯  
one (RESET) drives high and the other (RESET)  
drives low whenever VCC falls below the threshold.  
Reset outputs become inactive typically 200 ms after  
the supply voltage exceeds the reset threshold value.  
With both active high and low reset signals, interface  
to microcontrollers and other ICs is simple. CAT1027  
Valid reset guaranteed at VCC = 1V  
400kHz I2C Bus  
2.7V to 5.5V Operation  
¯¯¯¯¯¯  
¯¯¯¯¯¯  
has only a RESET output. In addition, the RESET pin  
can be used as an input for push-button manual reset  
capability.  
Low power CMOS technology  
16-Byte Page Write Buffer  
Built-in inadvertent write protection  
1,000,000 Program/Erase cycles  
Manual Reset capability  
The CAT1026 and CAT1027 provide an auxiliary  
voltage sensor input, VSENSE, which is used to monitor  
a second system supply. The auxiliary high impe-  
dance comparator drives the open drain output, VLOW  
,
100 year data retention  
whenever the sense voltage is below 1.25V threshold.  
Industrial and extended temperature ranges  
The CAT1027 is designed with 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. The CAT1027 features a watchdog timer  
interrupt input, WDI.  
8-pin DIP, SOIC, TSSOP, MSOP or TDFN  
(3 x 3mm foot-print) packages  
TDFN max height is 0.8mm  
For Ordering Information details, see page 19.  
The on-chip 2k-bit EEPROM 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.  
DESCRIPTION  
The CAT1026 and CAT1027 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 techno–  
logy. Memory interface is via a 400kHz I2C bus.  
Available packages include 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 is 3 x 3mm.  
The CAT1026 and CAT1027 provide a precision VCC  
sense circuit with five reset threshold voltage options  
that support 5V, 3.3V and 3V systems. The power  
© 2007 Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
1
Doc. No. 3010 Rev. L  

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