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CAT1163P-45TE13 fiches techniques PDF

Catalyst Semiconductor - Supervisory Circuit with I2C Serial CMOS EEPROM/ Precision Reset Controller and Watchdog Timer

Numéro de référence CAT1163P-45TE13
Description Supervisory Circuit with I2C Serial CMOS EEPROM/ Precision Reset Controller and Watchdog Timer
Fabricant Catalyst Semiconductor 
Logo Catalyst Semiconductor 





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CAT1163P-45TE13 fiche technique
CAT1163 (16K)
Supervisory Circuit with I2C Serial CMOS EEPROM, Precision Reset Controller and Watchdog Timer
FEATURES
s Watchdog timer input (WDI)
s 400kHz I2C bus compatible
s 2.7V to 6.0V operation
s Low power CMOS technology
s 16-Byte page write buffer
s Built-in inadvertent write protection
— V lock out
CC
— Write protect pin, WP
s Active high or low reset
— Precision power supply voltage monitor
— 5V, 3.3V and 3V systems
— Five threshold voltage options
s 1,000,000 Program/Erase cycles
s Manual reset
s 100 Year data retention
s 8-pin DIP or 8-pin SOIC
s Commercial and industrial temperature ranges
DESCRIPTION
The CAT1163 is a complete memory and supervisory
solution for microcontroller-based systems. A serial
EEPROM memory (16K) with hardware memory write
protection, a system power supervisor with brown out
protection and a watchdog timer are integrated together
in low power CMOS technology. Memory interface is via
an I2C bus.
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, a reset pin can be used as debounced input for
push-button manual reset capability.
The 1.6-second watchdog circuit returns a system to a
known good state if a software or hardware glitch halts
or “hangs” the system. The CAT1163 watchdog monitors
the WDI input pin.
The power supply monitor and reset circuit protects
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
The CAT1163 memory features a 16-byte page. In addition,
hardware data protection is provided by a write protect pin
WP and 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 an 8-pin DIP and a surface
mount, 8-pin SO package.
PIN CONFIGURATION
WDI
RESET
WP
GND
CAT1163
VCC
RESET
SCL
SDA
Reset Threshold Voltage Options
Part Dash Minimum Maximum
Number Threshold Threshold
-45 4.50 4.75
-42 4.25 4.50
-30 3.00 3.15
-28 2.85 3.00
-25 2.55 2.70
© 2002 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
BLOCK DIAGRAM
EXTERNAL LOAD
VCC
GND
DOUT
ACK
WORD ADDRESS
BUFFERS
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
SDA
START/STOP
LOGIC
XDEC
EEPROM
CONTROL
WP LOGIC
RESET Controller
Precision
WATCHDOG
Vcc Monitor
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
SCL
WDI RESET RESET
Doc No. 3003, Rev. C

PagesPages 12
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