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25C64 Datasheet

  • 25C64

  • 32K/64K-Bit SPI Serial CMOS E2PROM

  • 92.83KB

  • 9頁

  • CATALYST

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Advanced Information
CAT25C32/64
32K/64K-Bit SPI Serial CMOS E
2
PROM
FEATURES
s
10 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 &1,1)
s
Commercial, Industrial and Automotive
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, 14-Pin TSSOPand
20-Pin TSSOP
s
64-Byte Page Write Buffer
s
Block Write Protection
Temperature Ranges
鈥?Protect 1/4, 1/2 or all of E
2
PROM Array
DESCRIPTION
The CAT25C32/64 is a 32K/64K-Bit SPI Serial CMOS
E
2
PROM internally organized as 4Kx8/8Kx8 bits.
Catalyst鈥檚 advanced CMOS Technology substantially
reduces device power requirements. The CAT25C32/
64 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 CAT25C32/64 is
designed with software and hardware write protection
features including Block write protection. The device is
available in 8-pin DIP, 8-pin SOIC, 14-pin TSSOP and
20-pin TSSOP packages.
PIN CONFIGURATION
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
CS
SO
NC
NC
NC
WP
V
SS
BLOCK DIAGRAM
14
13
12
11
10
9
8
VCC
HOLD
NC
NC
NC
SCK
SI
SOIC Package (S) TSSOP Package (U14) TSSOP Package (U20)
1
2
3
4
5
6
7
NC
CS
SO
SO
NC
NC
WP
V
SS
NC
NC
DIP Package (P)
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
VCC
HOLD
HOLD
NC
NC
SCK
SI
NC
SO
NC
SI
CS
WP
HOLD
SCK
SENSE AMPS
SHIFT REGISTERS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
I/O
CONTROL
SPI
CONTROL
LOGIC
BLOCK
PROTECT
LOGIC
CONTROL LOGIC
XDEC
E
2
PROM
ARRAY
PIN FUNCTIONS
Pin Name
SO
SCK
WP
V
CC
V
SS
CS
SI
HOLD
NC
Function
Serial Data Output
Serial Clock
Write Protect
+1.8V to +6.0V Power Supply
Ground
Chip Select
Serial Data Input
Suspends Serial Input
No Connect
DATA IN
STORAGE
HIGH VOLTAGE/
TIMING CONTROL
STATUS
REGISTER
漏 1999 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. 25087-00 8/99 SPI-1

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