CAT25C33_05 Datasheet, PDF (1/11 Pages) Catalyst Semiconductor – 32K/64K-Bit SPI Serial CMOS EEPROM

CAT25C33/65
32K/64K-Bit SPI Serial CMOS EEPROM
FEATURES
s 10 MHz SPI compatible
s 1,000,000 program/erase cycles
s 1.8 to 6.0 volt operation
s 100 year data tetention
s Hardware and software protection
s Low power CMOS technology
s SPI modes (0,0 &1,1)
ts s Commercial, industrial, automotive and extended
temperature ranges
s Self-timed write cycle
s 8-pin DIP/SOIC and 14-pin TSSOP
s 64-byte page write buffer
s Block write protection
– Protect first page, last page, any 1/4 or lower
1/2 of EEPROM array
r _DESCRIPTION
a _{The CAT25C33/65 is a 32K/64K-Bit SPI Serial CMOS}
EEPROM internally organized as 4Kx8/8Kx8 bits.
P Catalyst’s advanced CMOS Technology substantially
reduces device power requirements. The CAT25C33/
65 features a 64-byte page write buffer. The device
operates via the SPI bus serial interface and is enabled
d _{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.
e _{PIN CONFIGURATION}
u _{SOIC Package (S, V, GV) TSSOP Package (U14, Y14)}
BLOCK DIAGRAM
CS ¹
tin ^{SO 2}
WP ³
VSS 4
8 VCC
7 _HOLD
6 SCK
5 SI
DIP Package (P, L, GL)
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
WORD ADDRESS
BUFFERS
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
n _{CS 1}
SO 2
o _{WP 3}
VSS 4
8 VCC
7 HOLD
6 SCK
5 SI
c _{PIN FUNCTIONS}
is ^{Pin Name}
Function
SO
Serial Data Output
D^SCK
Serial Clock
SO
SI
CS
WP
HOLD
SCK
I/O
CONTROL
SPI
CONTROL
LOGIC
BLOCK
PROTECT
LOGIC
XDEC
E²PROM
ARRAY
DATA IN
STORAGE
WP
Write Protect
HIGH VOLTAGE/
VCC
+1.8V to +6.0V Power Supply
STATUS
TIMING CONTROL
VSS
Ground
REGISTER
CS
Chip Select
SI
HOLD
Serial Data Input
Suspends Serial Input
NC
No Connect
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1000, Rev. H