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CAT24C021 Datasheet

  • CAT24C021

  • I2C with Supervisory Features Serial Componenents

  • Catalyst

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Advanced
CAT24C161/162(16K), CAT24C081/082(8K)
CAT24C041/042(4K), CAT24C021/022(2K)
Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer
FEATURES
s
Watchdog Timer on SDA for 24CXX1
s
Programmable Reset Threshold
s
400 KHz I2C Bus Compatible
s
2.7 to 6 Volt Operation
s
Low Power CMOS Technology
s
16 - Byte Page Write Buffer
s
Built-in inadvertent write protection
s
Active High or Low Reset Outputs
鈥?Precision Power Supply Voltage Monitoring
鈥?5V, 3.3V and 3V options
s
1,000,000 Program/Erase Cycles
s
100 Year Data Retention
s
8-Pin DIP or 8-Pin SOIC
s
Commercial, Industrial and Automotive
鈥?V
CC
Lock Out
Temperature Ranges
DESCRIPTION
The CAT24CXXX is a single chip solution to three
popular functions of EEPROM memory, precision reset
controller and watchdog timer. The 24C161/162(16K),
24C081/082(8K), 24C041/042(4K) and 24C021/022(2K)
feature a I
2
C Serial CMOS EEPROM. Catalyst's ad-
vanced CMOS technology substantially reduces device
power requirements. The 24CXXX features a 16-byte
page and is available in 8-pin DIP or 8-pin SOIC packages.
The reset function of the 24CXXX protects the system
during brown out and power up/down conditions. During
system failure the watchdog timer feature protects the
microcontroller with a reset signal. 24CXXX features
active low reset on pin 2 and active high reset on pin 7.
24CXX1 features watchdog timer on the SDA line.
24CXX2 does not feature the watchdog timer function.
PIN CONFIGURATION
24CXX1/XX2*
DC
RESET
WP
VSS
VCC
RESET
SCL
SDA
BLOCK DIAGRAM
EXTERNAL LOAD
DOUT
ACK
VCC
VSS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
SENSE AMPS
SHIFT REGISTERS
*All products offered in P and J packages
SDA
START/STOP
LOGIC
PIN FUNCTIONS
XDEC
E
2
PROM
Pin Name
SDA
RESET/RESET
SCL
Vcc
DC
V
SS
WP
Function
Serial Data/Address
Reset I/O
Clock Input
Power Supply
Do Not Connect
Ground
Write Protect
WP
CONTROL
LOGIC
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
RESET Controller
Only for
24C161
WATCHDOG
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
SCL
High
Precision
Vcc Monitor
RESET/RESET
24C1601 BLOCK
漏 1998 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 25079-00 1/98 M-1

CAT24C021 PDF文件相關(guān)型號

CAT24C022,CAT24C041,CAT24C042,CAT24C081,CAT24C082,CAT24C161,CAT24C162

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