CAT25640
64-Kb SPI Serial CMOS
EEPROM
Description
The CAT25640 is a 64−Kb Serial CMOS EEPROM device
internally organized as 8Kx8 bits. This features a 64−byte page write
buffer and supports the Serial Peripheral Interface (SPI) protocol. The
device is enabled through a Chip Select (CS) input. In addition, the
required bus signals are clock input (SCK), data input (SI) and data
output (SO) lines. The HOLD input may be used to pause any serial
communication with the CAT25640 device. The device features
software and hardware write protection, including partial as well as
full array protection.
http://onsemi.com
SOIC−8
V SUFFIX
CASE 751BD
UDFN−8
TDFN−8
HU3 SUFFIX
CASE 517AX
VP2 SUFFIX
CASE 511AK
Features
• 10 MHz SPI Compatible
• 1.8 V to 5.5 V Supply Voltage Range
• SPI Modes (0,0) & (1,1)
PDIP−8
L SUFFIX
CASE 646AA
TSSOP−8
Y SUFFIX
CASE 948AL
• 64−byte Page Write Buffer
• Self−timed Write Cycle
• Hardware and Software Protection
• Block Write Protection
PIN CONFIGURATION
1
1
− Protect / , / or Entire EEPROM Array
4
2
1
CS
SO
WP
V
CC
• Low Power CMOS Technology
• 1,000,000 Program/Erase Cycles
• 100 Year Data Retention
HOLD
SCK
SI
• Industrial and Extended Temperature Range
V
SS
• PDIP, SOIC, TSSOP 8−lead, TDFN and UDFN 8−pad Packages
• This Device is Pb−Free, Halogen Free/BFR Free, and RoHS
Compliant
PDIP (L), SOIC (V), TSSOP (Y),
TDFN (VP2), UDFN (HU3)
PIN FUNCTION
V
CC
Pin Name
Function
Chip Select
CS
SO
WP
SI
Serial Data Output
Write Protect
CS
CAT25640
SO
WP
V
Ground
SS
HOLD
SCK
SI
Serial Data Input
Serial Clock
SCK
V
SS
HOLD
Hold Transmission Input
Power Supply
Figure 1. Functional Symbol
V
CC
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
©
Semiconductor Components Industries, LLC, 2010
1
Publication Order Number:
February, 2010 − Rev. 7
CAT25640/D