CAT24FC65 Datasheet, PDF (1/10 Pages) Catalyst Semiconductor – 64K-Bit I2C Serial CMOS EEPROM with Partial Array Write Protection

CAT24FC65, CAT24FC66
64K-Bit I²C Serial CMOS EEPROM with Partial Array Write Protection
FEATURES
I Fast mode I²C bus compatible*
I Max clock frequency:
- 400KHz for VCC=2.5V to 5.5V
I Schmitt trigger filtered inputs for
noise suppression
I Low power CMOS technology
I 64-byte page write buffer
I Self-timed write cycle with auto-clear
I Industrial and automotive temperature ranges
I 5 ms max write cycle time
I Write protect feature
– Bottom 1/4 array protected when WP at V
IH
(CAT24FC65)
– Top 1/4 array protected when WP at V_IH
(CAT24FC66)
I 1,000,000 program/erase cycles
I 100 year data retention
I 8-pin DIP, 8-pin SOIC (JEDEC), 8-pin SOIC
(EIAJ), 8-pin TSSOP and TDFN packages
DESCRIPTION
The CAT24FC65/66 is a 64k-bit Serial CMOS EEPROM
internally organized as 8,192 words of 8 bits each.
Catalyst’s advanced CMOS technology substantially
reduces device power requirements.
The CAT24FC65/66 features a 64-byte page write
buffer. The device operates via the I²C bus serial
interface and is available in 8-pin DIP, SOIC, TSSOP
and TDFN packages.
PIN CONFIGURATION
BLOCK DIAGRAM
DIP Package (P, L, GL)
TDFN Package (RD2, ZD2)
EXTERNAL LOAD
A0
1
A1 2
A2 3
VSS 4
8 _VCC
7 _WP
6 _SCL
5 _SDA
SOIC Package
(J, W, K, X, GW, GX)
A0 ¹
A1 ²
A2
3
VSS ⁴
8 _VCC
7 _WP
6 _SCL
5 _SDA
PIN FUNCTIONS
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 _SDA
(Top View)
TSSOP Package (U, Y, GY)
A0 ¹
A1 ²
A2
3
VSS ⁴
8 _VCC
7 _WP
6 _SCL
5 _SDA
VCC
VSS
SDA
WP
DOUT
ACK
WORD ADDRESS
BUFFERS
START/STOP
LOGIC
CONTROL
LOGIC
XDEC
Pin Name
Function
A0, A1, A2 Address Inputs
SDA
Serial Data/Address
SCL
Serial Clock
WP
Write Protect
V_CC
+2.5V to +5.5V Power Supply
V_SS
Ground
NC
No Connect
SCL
A0
A1
A2
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
512
EEPROM
128
128X512
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I²C Bus Protocol.
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1047, Rev. H