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CAT24C44 PDF даташит

Спецификация CAT24C44 изготовлена ​​​​«Catalyst Semiconductor» и имеет функцию, называемую «256-Bit Serial Nonvolatile CMOS Static RAM».

Детали детали

Номер произв CAT24C44
Описание 256-Bit Serial Nonvolatile CMOS Static RAM
Производители Catalyst Semiconductor
логотип Catalyst Semiconductor логотип 

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CAT24C44 Даташит, Описание, Даташиты
CAT24C44
256-Bit Serial Nonvolatile CMOS Static RAM
FEATURES
s Single 5V Supply
s Infinite E2PROM to RAM Recall
s CMOS and TTL Compatible I/O
s Low CMOS Power Consumption:
–Active: 3 mA Max.
–Standby: 30 µA Max.
s Power Up/Down Protection
s 10 Year Data Retention
s JEDEC Standard Pinouts:
–8-pin DIP
–8-pin SOIC
s 100,000 Program/Erase Cycles (E2PROM)
s Auto Recall on Power-up
s Commercial, Industrial and Automotive
Temperature Ranges
DESCRIPTION
The CAT24C44 Serial NVRAM is a 256-bit nonvolatile
memory organized as 16 words x 16 bits. The high
speed Static RAM array is bit for bit backed up by a
nonvolatile E2PROM array which allows for easy trans-
fer of data from RAM array to E2PROM (STORE) and
from E2PROM to RAM (RECALL). STORE operations
are completed in 10ms max. and RECALL operations
typically within 1.5µs. The CAT24C44 features unlimited
RAM write operations either through external RAM
writes or internal recalls from E2PROM. Internal false
store protection circuitry prohibits STORE operations
when VCC is less than 3.5V (typical) ensuring E2PROM
data integrity.
The CAT24C44 is manufactured using Catalyst’s ad-
vanced CMOS floating gate technology. It is designed to
endure 100,000 program/erase cycles (E2PROM) and
has a data retention of 10 years. The device is available
in JEDEC approved 8-pin plastic DIP and SOIC pack-
ages.
PIN CONFIGURATION
DIP Package (P)
SOIC Package (S)
CE 1
SK 2
DI 3
DO 4
8 VCC
CE 1
7 STORE SK 2
6 RECALL DI 3
5 VSS
DO 4
8 VCC
7 STORE
6 RECALL
5 VSS
5157 FHD F01
PIN FUNCTIONS
Pin Name
SK
DI
DO
CE
RECALL
STORE
VCC
VSS
Function
Serial Clock
Serial Input
Serial Data Output
Chip Enable
Recall
Store
+5V
Ground
© 1998 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 25019-0A 2/98 N-1









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CAT24C44 Даташит, Описание, Даташиты
CAT24C44
BLOCK DIAGRAM
ROW
DECODE
E2PROM ARRAY
STATIC RAM
ARRAY
256-BIT
RECALL
STORE
CE
DI
INSTRUCTION
REGISTER
COLUMN
DECODE
SK
INSTRUCTION
DECODE
4-BIT
COUNTER
CONTROL
LOGIC
STORE
RECALL
DO
VCC
VSS
5157 FHD F09
MODE SELECTION(1)(2)
Mode
Hardware Recall(3)
Software Recall
Hardware Store(3)
Software Store
X = Don’t Care
STORE
1
1
0
1
RECALL
0
1
1
1
POWER-UP TIMING(4)
Symbol
Parameter
VCCSR
VCC Slew Rate
tpur Power-Up to Read Operations
tpuw Power-Up to Write or Store Operation
Software
Instruction
NOP
RCL
NOP
STO
Write Enable Previous Recall
Latch
Latch
XX
XX
SET TRUE
SET TRUE
Min.
0.5
Max.
0.005
200
5
Units
V/m
µs
ms
Note:
(1) The store operation has priority over all the other operations.
(2) The store operation is inhibited when VCC is below 3.5V.
(3) NOP designates that the device is not currently executing an instruction.
(4) This parameter is tested initially and after a design or process change that affects the parameter.
Doc. No. 25019-0A 2/98 N-1
2









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CAT24C44 Даташит, Описание, Даташиты
CAT24C44
ABSOLUTE MAXIMUM RATINGS*
Temperature Under Bias ................. –55°C to +125°C
Storage Temperature ....................... –65°C to +150°C
Voltage on Any Pin with
Respect to Ground(2) ............. –2.0 to +VCC +2.0V
VCC with Respect to Ground ............... –2.0V to +7.0V
Package Power Dissipation
Capability (Ta = 25°C) ................................... 1.0W
Lead Soldering Temperature (10 secs) ............ 300°C
Output Short Circuit Current(3) ........................ 100 mA
*COMMENT
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 specifica-
tion is not implied. Exposure to any absolute maximum
rating for extended periods may affect device perfor-
mance and reliability.
RELIABILITY CHARACTERISTICS
Symbol
NEND(1)
TDR(1)
VZAP(1)
ILTH(1)(4)
Parameter
Endurance
Data Retention
ESD Susceptibility
Latch-Up
Min.
100,000
10
2000
100
Max.
Units
Cycles/Byte
Years
Volts
mA
Reference Test Method
MIL-STD-883, Test Method 1033
MIL-STD-883, Test Method 1008
MIL-STD-883, Test Method 3015
JEDEC Standard 17
D.C. OPERATING CHARACTERISTICS
VCC = 5V ±10%, unless otherwise specified.
Symbol
Parameter
ICCO Current Consumption (Operating)
Min.
Limits
Typ.
Max.
3
Unit
mA
ISB Current Consumption (Standby)
ILI Input Current
ILO Output Leakage Current
VIH High Level Input Voltage
VIL Low Level Input Voltage
VOH High Level Output Voltage
VOL Low Level Output Voltage
2
0
2.4
30 µA
2 µA
10 µA
VCC
V
0.8 V
V
0.4 V
Conditions
Inputs = 5.5V, TA = 0°C
All Outputs Unloaded
CE = VIL
0 VIN 5.5V
0 VOUT 5.5V
IOH = –2mA
IOL = 4.2mA
CAPACITANCE TA = 25°C, f = 1.0 MHz, VCC = 5V
Symbol
Parameter
CI/O(1)
Input/Output Capacitance
CIN(1)
Input Capacitance
Max.
10
6
Unit
pF
pF
Conditions
VI/O = 0V
VIN = 0V
Note:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) The minimum DC input voltage is –0.5V. During transitions, inputs may undershoot to –2.0V for periods of less than 20 ns.
Maximum DC voltage on output pins is VCC +0.5V, which may overshoot to VCC +2.0V for periods of less than 20 ns.
(3) Output shorted for no more than one second. No more than one output shorted at a time.
(4) Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1V to VCC +1V.
3 Doc. No. 25019-0A 2/98 N-1










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Номер в каталогеОписаниеПроизводители
CAT24C44256-Bit Serial Nonvolatile CMOS Static RAMCatalyst Semiconductor
Catalyst Semiconductor
CAT24C44256-Bit Serial Nonvolatile CMOS Static RAMCatalyst Semiconductor
Catalyst Semiconductor

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