CAT25C32_04 Datasheet, PDF (1/11 Pages) Catalyst Semiconductor – 32K/64K-Bit SPI Serial CMOS EEPROM

(Not recommended for new design,
replace with CAT25320)
CAT25C32/64
32K/64K-Bit SPI Serial CMOS EEPROM
FEATURES
s 10 MHz SPI compatible
s 1.8 to 6.0 volt operation
s Hardware and software protection
s Low power CMOS technology
s SPI modes (0,0 &1,1)
s Commercial, industrial and automotive
temperature ranges
ALOGEN ^FR
LEA _{D F REETM}
s 1,000,000 program/erase cycles
s 100 year data tetention
s Self-timed write cycle
s 8-pin DIP/SOIC, 14-pin TSSOP and 20-pin
TSSOP
s 64-Byte page write buffer
s Block write protection
– Protect 1/4, 1/2 or all of EEPROM array
DESCRIPTION
The CAT25C32/64 is a 32K/64K-Bit SPI Serial CMOS
EEPROM internally organized as 4Kx8/8Kx8 bits.
Catalyst’s 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
DIP Package (P, L) SOIC Package (S, V)
TSSOP Package (U14, Y14) TSSOP Package (U20, Y20)
CS ¹
SO 2
WP 3
VSS 4
8 VCC
7 HOLD
6 SCK
5 SI
CS ¹
SO ²
WP ³
VSS 4
8 VCC
7 _HOLD
6 SCK
5 SI
BLOCK DIAGRAM
SENSE AMPS
SHIFT REGISTERS
CS 1
SO 2
NC 3
NC 4
NC 5
WP 6
V_{SS 7}
14 VCC
13 HOLD
12 NC
11 NC
10 NC
9 SCK
8 SI
NC 1
CS 2
SO 3
SO 4
NC 5
NC 6
WP 7
V_{SS 8}
NC 9
NC 10
20 NC
19 VCC
18 HOLD
17 HOLD
16 NC
15 NC
14 SCK
13 SI
12 NC
11 NC
SO
SI
CS
WP
HOLD
SCK
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
I/O
CONTROL
SPI
CONTROL
LOGIC
BLOCK
PROTECT
LOGIC
STATUS
REGISTER
XDEC
E²PROM
ARRAY
DATA IN
STORAGE
HIGH VOLTAGE/
TIMING CONTROL
PIN FUNCTIONS
Pin Name
SO
SCK
WP
VCC
VSS
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
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. 1001, Rev. G