Holtek Semiconductor Inc HT24LC01, HT24LC02 Datasheet
1K/2K 2-Wire CMOS Serial EEPROM
Features
•
Operating voltage: 2.4V ~5.5V
•
Low power consumption
–
Operation: 5mA max.
–
Standby: 5µA max.
•
Internal organization
–
1K (HT24LC01):128×8
–
2K (HT24LC02): 256×8
•
2-wire serial interface
•
Write cycle time: 5ms max.
•
Automatic erase-before-write operation
General Description
The HT24LC01/02 is a 1K/2K-bit serial
read/write non-volatile memory device using
the CMOS floating gate process. Its 1024/2048
bits of memory are organized into 128/256
words and each word is 8 bits. The device is
optimized for use in m any industri al and com -
HT24LC01/02
•
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
•
8-pin DIP/SOP package
•
8-pin TSSOP (HT24LC02 only)
•
Commerical temperature range
(0
°C to +70°C)
mercial applications where low power and low
voltage operation are essential. Up to eight
HT24LC01/02 de vices may b e conn ected to th e
same two-wire bus. The HT 24LC 01/02 is gua ranteed for 1M erase/write cycles and 40-year
data retention.
Block Diagram Pin Assignme nt
1 6th May ’99
HT24LC01/02
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 — Negative power supply
VCC I Positive power supply
Absolu te Maxim um Ratings
Operating Temperature (Commercial) .................................................................................. 0°C to 70°C
Storage T emperature ..................... .... .. .. .... .. .. .... .. .. .... .. .. .... .. .. .... .. .. .... .. .. .... .. .. .... .. .. .... .. .. ... –50
Applied VCC Voltage with Respect to VSS ................ .. ................ .. .. ................ .. .. ............. –0.3V to 6.0V
Applied V oltage on any Pin with Respect to VSS
...................................................................
–0.3V to VCC+0.3V
Note: These are stress ratings only. Stresses exceeding the range specifie d under “Absolute Maxi-
mum Ratings” may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme condition s may affect device reliability.
°C to 125°C
D.C. Characteristics Ta=0°C to 70°C
Symbol Parameter
V
CC
I
CC1
I
CC2
V
IL
V
IH
V
OL
I
LI
I
LO
I
STB1
I
STB2
C
IN
C
OUT
Operating Voltage — — 2.4 — 5.5 V
Operating Current 5V Read at 100kHz — — 2 mA
Operating Current 5V Write at 100kHz — — 5 mA
Input Low Voltage — — –1 — 0.3V
Input High Voltage — — 0.7V
Output Low Voltage 2.4V IOL=2.1mA — — 0.4 V
Input Leakage Current 5V VIN=0 or V
Output Leakage Current 5V V
Standby Current 5V VIN=0 or V
Standby Current 2.4V VIN=0 or V
Input Capacitance (See Note) — f=1MHz 25°C——6pF
Output Capacitance (See Note) — f=1MHz 25°C——8pF
Note: These parameters are periodically sampled but not 100% tested
Test Conditions
V
Conditions
CC
CC
=0 or V
OUT
CC
CC
2 6th May ’99
Min. Typ. Max. Unit
—VCC+0.5 V
CC
—— 1 µA
CC
—— 1 µA
—— 5 µA
—— 4 µA
CC
V
HT24LC01/02
A.C. Characteristics Ta=0°C to 70°C
Symbol Parameter Remark
f
SK
t
HIGH
t
LOW
t
R
t
F
t
HD:STA
t
SU:STA
t
HD:DAT
t
SU:DAT
t
SU:STO
t
AA
Clock Frequency — 100 — 400 kHz
Clock High Time 4000 — 600 — ns
Clock Low Time 4700 — 1200 — ns
SDA and SCL Rise Time Note — 1000 — 300 ns
SDA and SCL Fall Time Note — 300 — 300 ns
START Condition Hold
Time
START Condition
Setup Time
After this period
the first clock pulse
is generated
Only relevant for
repeated START
condition
Data Input Hold Time 0 — 0 — ns
Data Input Setup Time 200 — 1 00 — ns
STOP Condition Setup
Time
Output Valid from
Clock
Time in which the
bus must be free
t
BUF
Bus Free Time
before a new
transmission can
start
t
SP
t
WR
Input Filter Time
Constant (SDA and SCL
Pins)
Write Cycle Time — 5 — 5 ms
Noise suppression
time
Standard Mode* V
=5V±10%
CC
Unit
Min. Max. Min. Max.
4000 — 600 — ns
4000 — 600 — ns
4000 — 600 — ns
— 3500 — 900 ns
4700 — 1200 — ns
—100—50ns
Notes: These parameters are periodically sampled but not 100% tested
* The standard mode means V
=2.4V to 5.5V
CC
For relative timing, refer to timing diagrams
3 6th May ’99
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