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Catalyst Semiconductor
Catalyst Semiconductor

CAT14002 Datasheet Preview

CAT14002 Datasheet

(CAT140xx) Voltage Supervisor

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CAT14002 pdf
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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 VCC = 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
NC / NC / A1 / A1
NC / A2 / A2 / A2
VSS
1
2
3
4
8 VCC
7 RST/RST
6 SCL
5 SDA
PIN FUNCTION
Pin Name
A0, A1, A2
SDA
SCL
RST/¯R¯S¯T¯
VCC
VSS
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 VCC sense circuit
with two reset output options: CMOS active low output
or CMOS active high. The RESET output is active
whenever VCC 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.
Characteristics subject to change without notice
1
Doc. No. 1117 Rev. A



Catalyst Semiconductor
Catalyst Semiconductor

CAT14002 Datasheet Preview

CAT14002 Datasheet

(CAT140xx) Voltage Supervisor

No Preview Available !

CAT14002 pdf
CAT140xx
BLOCK DIAGRAM
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SDA
SCL
A0
A1
A2
EEPROM
VCC
VOLTAGE
DETECTOR
RST or RST
VSS
ABSOLUTE MAXIMUM RATINGS(1)
Parameters
Storage Temperature
Voltage on Any Pin with Respect to Ground(2)
RELIABILITY CHARACTERISTICS(3)
Symbol
NEND(4)
TDR
Parameter
Endurance
Data Retention
Ratings
-65 to +150
-0.5 to +6.5
Units
°C
V
Min
1,000,000
100
Units
Program/ Erase Cycles
Years
D.C. OPERATING CHARACTERISTICS
VCC = +2.5V to +5.5V unless otherwise specified.
Symbol Parameter
ICC Supply Current
ISB Standby Current
IL I/O Pin Leakage
VIL Input Low Voltage
VIH Input High Voltage
VOL Output Low Voltage
SDA
Limits
Min. Typ. Max.
1
10 22
8 17
2
-0.5
VCC x 0.7
VCC x 0.3
VCC + 0.5
0.4
Test Condition
Read or Write at 400kHz
VCC < 5.5V; All I/O Pins at VSS or VCC
VCC < 3.6V; All I/O Pins at VSS or VCC
Pin at GND or VCC
VCC 2.5 V, IOL = 3.0 mA
Units
mA
μA
μA
V
V
V
Notes:
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
(2) The DC input voltage on any pin should not be lower than -0.5 V or higher than VCC + 0.5 V. During transitions, the voltage on any pin may
undershoot to no less than -1.5 V or overshoot to no more than VCC + 1.5 V, for periods of less than 20 ns.
(3) These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AEC-Q100
and JEDEC test methods.
(4) Page Mode, VCC = 5 V, 25°C
Doc. No. 1117 Rev. A
2 © 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice


Part Number CAT14002
Description (CAT140xx) Voltage Supervisor
Maker Catalyst Semiconductor
Total Page 14 Pages
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