HT24LC02A_14 Datasheet, PDF (1/10 Pages) Holtek Semiconductor Inc – CMOS 2K 2-Wire Serial EEPROM

HT24LC02A
CMOS 2K 2-Wire Serial EEPROM
Features
• Operating voltage
1.8V~5.5V for temperature -40°C to +85°C
• Low power consumption
–– Operation: 5mA max.
–– Standby: 2μA 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
• 10⁶ erase/write cycles per word
• Package Types: 8SOP and SOT23-5
General Description
The HT24LC02A 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. The HT24LC02A is
guaranteed for 1M erase/write cycles and 40-year data
retention.
Block Diagram
SCL
I/O
C o n tro l
SDA
L o g ic
M e m o ry
WP
C o n tro l
L o g ic
A d d re s s
C o u n te r
VCC
VSS
Pin Assignment
NC ₁
NC ₂
NC ₃
VSS ₄
8 ^VCC
7 ^WP
6 ^SCL
5 ^SDA
H T24LC 02A
8 S O P -A
H V P um p
X
D EEPRO M
E
A rra y
C
P age B uf
YDEC
S ense A M P
R /W C o n tro l
WP
VCC
5
4
Top
1
2
3
V ie w
SCL VSS SDA
H T24LC 02A
S O T 2 3 -5 -A
Selection Table
Part No. Capacity
VDD
Clock Rate Write Speed
(kHz) @2.4V(ms)
HT24LC02A 256×8 1.8V~5.5V 400
5
Operating
Current
@5.0V(mA)
5
Standby
Current
@5.0V(μA)
2
Package Marking
SOT23-5 2402A
8SOP HT24LC02A
Pin Description
Pin Name
SDA
SCL
WP
VSS
VCC
I/O
Description
I/O Serial data input/output
I Serial clock data input
I Write protect
— Negative power supply, ground
— Positive power supply
Rev. 1.10
1
January 16, 2014