Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All


Preview PDF Download HTML

CAT1026 Datasheet(PDF) 1 Page - Catalyst Semiconductor

No. de Pieza. CAT1026
Descripción  Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
Descarga  20 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio
Logo CATALYST - Catalyst Semiconductor

CAT1026 Datasheet(HTML) 1 Page - Catalyst Semiconductor

  CAT1026_07 Hoja de datos HTML 1Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 2Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 3Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 4Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 5Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 6Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 7Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 8Page - Catalyst Semiconductor CAT1026_07 Hoja de datos HTML 9Page - Catalyst Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 20 page
background image
CAT1026, CAT1027
© 2007 Catalyst Semiconductor, Inc.
Doc. No. 3010 Rev. L
Characteristics subject to change without notice
Dual Voltage Supervisory Circuits with
2C Serial 2k-bit CMOS EEPROM
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
— Valid reset guaranteed at V
CC = 1V
400kHz I
2C Bus
2.7V to 5.5V Operation
Low power CMOS technology
16-Byte Page Write Buffer
Built-in inadvertent write protection
1,000,000 Program/Erase cycles
Manual Reset capability
100 year data retention
Industrial and extended temperature ranges
(3 x 3mm foot-print) packages
— TDFN max height is 0.8mm
For Ordering Information details, see page 19.
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 I
2C bus.
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
supply monitor and reset circuit protects memory and
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.
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
has only a RESET
¯¯¯¯¯¯ output. In addition, the RESET
¯¯¯¯¯¯ pin
can be used as an input for push-button manual reset
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,
whenever the sense voltage is below 1.25V threshold.
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.
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.
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.

Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 

Datasheet Download

Go To PDF Page

Enlace URL

Privacy Policy
Does ALLDATASHEET help your business so far?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©

Mirror Sites
English :  |   English :  |   Chinese :  |   German :  |   Japanese :
Russian :  |   Korean :  |   Spanish :  |   French :  |   Italian :
Portuguese :  |   Polish :  |   Vietnamese :