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1026PI-30TE13 参数 Datasheet PDF下载

1026PI-30TE13图片预览
型号: 1026PI-30TE13
PDF下载: 下载PDF文件 查看货源
内容描述: [Power Supply Support Circuit, Adjustable, 2 Channel, CMOS, PDIP8, PLASTIC, DIP-8]
分类和应用: 光电二极管
文件页数/大小: 17 页 / 108 K
品牌: CATALYST [ CATALYST SEMICONDUCTOR ]
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Preliminary Information  
CAT1026, CAT1027  
Dual Voltage Supervisory Circuits with I2C Serial 2K CMOS EEPROM  
FEATURES  
Precision VCC power supply voltage monitor  
— 5V, 3.3V and 3V systems  
16-Byte page write buffer  
Built-in inadvertent write protection  
1,000,000 Program/Erase cycles  
Manual reset capability  
— Five threshold voltage options  
Additional voltage monitoring  
— Externally adjustable down to 1.25V  
100 year data retention  
Watchdog timer (CAT1027 only)  
Active high or low reset  
— Valid reset guaranteed to VCC=1V  
400kHz I2C bus  
8-pin DIP, SOIC, TSSOP, TDFN (MSOP  
(3x4.9mm) & 3x3mm foot prints) or MSOP  
packages  
— TDFN max height is 0.8mm  
Automotive, extended automotive and  
2.7V to 5.5V operation  
industrial temperature ranges  
Low power CMOS technology  
DESCRIPTION  
The CAT1026 and CAT1027 are complete memory and used as an input for push-button manual reset capability.  
supervisorysolutionsformicrocontroller-basedsystems.  
The CAT1026 and CAT1027 provide an auxiliary voltage  
A 2kbit serial EEPROM memory and a system power  
sensor input, VSENSE, which is used to monitor a second  
supervisor with brown-out protection are integrated  
system supply. The auxiliary high impedance comparator  
together in low power CMOS technology. Memory  
drives the open drain output, VLOW, whenever the sense  
interface is via a 400kHz I2C bus.  
voltage is below 1.25V threshold.  
The CAT1026 and CAT1027 provide a precision VCC  
TheCAT1027isdesignedwitha1.6secondwatchdogtimer  
sense circuit with five reset threshold voltage options  
circuit that resets a system to a known state if software or a  
that support 5V, 3.3V and 3V systems. The power  
hardware glitch halts or “hangs” the system. The CAT1027  
supply monitor and reset circuit protects memory and  
features a watchdog timer interrupt input, WDI.  
systems controllers during power up/down and against  
brownout conditions. If power supply voltages are out of  
EEPROM memory features a 16-byte page. In addition,  
tolerance reset signals become active preventing the  
hardware data protection is provided by a VCC sense circuit  
system microcontroller, ASIC, or peripherals from  
that prevents writes to memory whenever VCC falls below  
the reset threshold or until VCC reaches the reset threshold  
operating.  
during power up.  
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  
Available packages include 8-pin DIP and surface mount,  
8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin MSOP  
outputs become inactive typically 200 ms after the  
packages. The TDFN package thickness is 0.8mm  
supply voltage exceeds the reset threshold value. With  
maximum. TDFN footprint options are 3x3mm or 3x4.9mm  
both active high and low reset signals, interface to  
(MSOP pad layout).  
microcontrollers and other ICs is simple. CAT1027 has  
onlyaRESET output. Inaddition, the RESET pincanbe  
© 2003 by Catalyst Semiconductor, Inc.  
Doc No. 3010, Rev. E  
Characteristics subject to change without notice