CAT14004 Datasheet, PDF (1/14 Pages) Catalyst Semiconductor – Voltage Supervisor with I2C Serial CMOS EEPROM

Voltage Supervisor with I²C Serial
CMOS EEPROM
CAT140xx
FEATURES
„ Precision Power Supply Voltage Monitor
ƒ 5V, 3.3V, 3V & 2.5V systems
ƒ 7 threshold voltage options
„ Active High or Low Reset
ƒ Valid reset guaranteed at V_CC = 1 V
„ Supports Standard and Fast I²C Protocol
„ 16-Byte Page Write Buffer
„ Low power CMOS technology
„ 1,000,000 Program/Erase cycles
„ 100 year data retention
„ Industrial temperature range
„ RoHS-compliant 8-pin SOIC package
For Ordering Information details, see page 14.
PIN CONFIGURATION
SOIC (W)
CAT14016 / 08 / 04 / 02
NC / NC / NC / A₀ 1
8 V_CC
NC / NC / A₁ / A₁ 2
NC / A₂ / A₂ / A₂ 3
7 RST/RST
6 SCL
V_SS 4
5 SDA
PIN FUNCTION
Pin Name
A0, A1, A2
SDA
SCL
RST/¯R¯S¯T¯
V_CC
V_SS
NC
Function
Device Address Inputs
Serial Data Input/Output
Serial Clock Input
Reset Output
Power Supply
Ground
No Connect
DESCRIPTION
The CAT140xx (see table below) are memory and
supervisory solutions for microcontroller based systems. A
CMOS serial EEPROM memory and a system power
supervisor with brown-out protection are integrated
together. Memory interface is via both the standard
(100kHz) as well as fast (400kHz) I²C protocol.
The CAT140xx provides a precision V_CC sense circuit
with two reset output options: CMOS active low output
or CMOS active high. The RESET output is active
whenever V_CC is below the reset threshold or falls
below the reset threshold voltage.
The power supply monitor and reset circuit protect
system controllers during power up/down and against
brownout conditions. Seven reset threshold voltages
support 5V, 3.3V, 3V and 2.5V systems. If power
supply voltages are out of tolerance reset signals
become active, preventing the system microcontroller,
ASIC or peripherals from operating. Reset signals
become inactive typically 240ms after the supply
voltage exceeds the reset threshold level.
MEMORY SIZE SELECTOR
Product
14002
14004
14008
14016
Memory density
2-Kbit
4-Kbit
8-Kbit
16-Kbit
THRESHOLD SUFFIX SELECTOR
Nominal Threshold
Voltage
4.63V
4.38V
4.00V
3.08V
2.93V
2.63V
2.32V
Threshold Suffix
Designation
L
M
J
T
S
R
Z
© 2006 Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. 1117 Rev. A