Rainbow Electronics HT24LC02 - Manual

HT24LC02
CMOS 2K 2-Wire Serial EEPROM
Block Diagram Pin Assignment
Pin Description
Pin Name I/O Description
A0~A2 I Address inputs
SDA I/O Serial data inputs/output
SCL I Serial clock data input
WP I Write protect
VSS ¾ Negative power supply, ground
VCC ¾ Positive power supply
Rev. 1.10 1 November 5, 2002
Features
· Operating voltage: 2.2V~5.5V
· Low power consumption
- Operation: 5mA max.
- Standby: 5 mA max.
· Internal organization: 256 ´8
· 2-wire serial interface
· Write cycle time: 5ms max.
· Automatic erase-before-write operation
· Partial page write allowed
· 8-byte Page write modes
· Write operation with built-in timer
· Hardware controlled write protection
· 40-year data retention
· 10
6
erase/write cycles per word
· Commerical temperature range (0 °C to +70°C)
· 8-pin DIP/SOP/TSSOP package
General Description
The HT24LC02 is a 2K-bit serial read/write non-volatile
memory device using the CMOS floating gate process.
Its 2048 bits of memory are organized into 256 words
and each word is 8 bits. The device is optimized for use
in many industrial and commercial applications where low power and low voltage operation are essential. Up
to eight HT24LC02 devices may be connected to the
same 2-wire bus. The HT24LC02 is guaranteed for 1M
erase/write cycles and 40-year data retention.
1
2
3
4 8
7
6
5
H T 2 4 L C 0 2
8 D I P - A / S O P - A / T S S O P - A
A 0
A 1
A 2
V S S
V C C
W P
S C L
S D A
I / O
C o n t r o l
L o g i c
M e m o r y
C o n t r o l
L o g i c
S C L
S D A
A d d r e s s
C o u n t e r
A 0 ~ A 2
V C C
V S S
X
D
E
C
E E P R O M
A r r a y
P a g e B u f
Y D E C
S e n s e A M P
R / W C o n t r o l
H V P u m p
W P