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Catalyst Semiconductor - 64K/128K-Bit SPI Serial CMOS E2PROM

Numéro de référence CAT25C64
Description 64K/128K-Bit SPI Serial CMOS E2PROM
Fabricant Catalyst Semiconductor 
Logo Catalyst Semiconductor 





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CAT25C64 fiche technique
Advance Information
CAT25C64/128
64K/128K-Bit SPI Serial CMOS E2PROM
FEATURES
s 5 MHz SPI Compatible
s 1.8 to 6.0 Volt Operation
s Hardware and Software Protection
s Zero Standby Current
s Low Power CMOS Technology
s SPI Modes (0,0)
s Commercial, Industrial and Automotive
Temperature Ranges
DESCRIPTION
s 1,000,000 Program/Erase Cycles
s 100 Year Data Retention
s Self-Timed Write Cycle
s 8-Pin DIP/SOIC, 16-Pin SOIC and 20-Pin TSSOP
s 64-Byte Page Write Buffer
s Block Write Protection
– Protect 1/4, 1/2 or all of E2PROM Array
The CAT25C64/128 is a 64K/128K-Bit SPI Serial CMOS
E2PROM internally organized as 8Kx8/16Kx8 bits.
Catalyst’s advanced CMOS Technology substantially
reduces device power requirements. The CAT25C64/
128 features a 64-byte page write buffer. The device
operates via the SPI bus serial interface and is enabled
though a Chip Select (CS). In addition to the Chip Select,
the clock input (SCK), data in (SI) and data out (SO) are
required to access the device. The HOLD pin may be
used to suspend any serial communication without
resetting the serial sequence. The CAT25C64/128 is
designed with software and hardware write protection
features including Block write protection. The device is
available in 8-pin DIP, 8-pin SOIC, 16-pin SOIC and 20-
pin TSSOP packages.
PIN CONFIGURATION
BLOCK DIAGRAM
SOIC Package (S) SOIC Package (S16) TSSOP Package (U20)
CS
SO
WP
VSS
1
2
3
4
8
7
VCC
HOLD
CS
1
6 SCK
SO 2
5 SI
NC 3
NC 4
DIP Package (P)
NC 5
NC 6
CS 1
SO 2
8 VCC
7 HOLD
WP 7
VSS 8
WP
VSS
3
4
6 SCK
5 SI
16 VCC NC 1
15 HOLD CS 2
14
NC
SO 3
SO 4
13 NC NC 5
12 NC NC 6
WP 7
11 NC VSS 8
10 SCK NC 9
9 SI
NC 10
PIN FUNCTIONS
Pin Name
Function
SO
SCK
Serial Data Output
Serial Clock
20 NC
19 VCC
18 HOLD
17 HOLD
16 NC
15 NC
14 SCK
13 SI
12 NC
11 NC
WORD ADDRESS
BUFFERS
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
SO
SI
CS
WP
HOLD
SCK
I/O
CONTROL
SPI
CONTROL
LOGIC
XDEC
E2PROM
ARRAY
WP Write Protect
VCC +1.8V to +6.0V Power Supply
BLOCK
PROTECT
LOGIC
VSS Ground
CS Chip Select
DATA IN
STORAGE
SI
HOLD
NC
Serial Data Input
Suspends Serial Input
No Connect
STATUS
REGISTER
HIGH VOLTAGE/
TIMING CONTROL
25C128 F02
© 1999 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc No. 25069-00 6/99 SPI-1

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