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CAT15002 Datasheet(Hoja de datos) 1 Page - Catalyst Semiconductor

No. de Pieza. CAT15002
Descripción  Voltage Supervisor with 2-Kb and 4-Kb SPI Serial CMOS EEPROM
Descarga  15 Pages
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Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
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CAT15002, CAT15004
© 2007 Catalyst Semiconductor, Inc.
1
Doc. No. 1126 Rev. A
Characteristics subject to change without notice
Voltage Supervisor with 2-Kb and 4-Kb SPI
Serial CMOS EEPROM
FEATURES
Precision Power Supply Voltage Monitor
5V, 3.3V, 3V & 2.5V systems
7 threshold voltage options
Active High or Low Reset
Valid reset guaranteed at VCC = 1V
10MHz SPI compatible
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)
CS
¯¯
1
8 VCC
SO
2
7 RST/RST
¯¯¯¯
WP
¯¯¯
3
6 SCK
VSS 4
5 SI
DESCRIPTION
The CAT15002/04 (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 SPI
bus serial interface.
The CAT15002/04 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
Memory density
15002
2-Kbit
15004
4-Kbit
PIN FUNCTION
Pin Name
Function
CS
¯¯
Chip Select
SO
Serial Data Output
WP
¯¯¯
Write Protect
VSS
Ground
SI
Serial Data Input
SCK
Serial Clock Input
RST/RST
¯¯¯¯
Reset Output
VCC
Power Supply
THRESHOLD SUFFIX SELECTOR
Nominal Threshold
Voltage
Threshold Suffix
Designation
4.63V
L
4.38V
M
4.00V
J
3.08V
T
2.93V
S
2.63V
R
2.32V
Z




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