24LC21-I/SN Microchip Technology, 24LC21-I/SN Datasheet - Page 3

• Manufacturer Part Number: 24LC21-I/SN
• Description: IC EEPROM 1KBIT 400KHZ 8SOIC
• Manufacturer: Microchip Technology

Specifications of 24LC21-I/SN

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 1K (128 x 8)
• Speed: 100kHz, 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TABLE 1-2:
 2004 Microchip Technology Inc.
Clock frequency
Clock high time
Clock low time
SDA and SCL rise time
SDA and SCL fall time
Start condition hold time
Start condition setup time
Data input hold time
Data input setup time
Stop condition setup time
Output valid from clock
Bus free time
Output fall time from V
min. to V
Input filter spike suppres-
sion (SDA and SCL pins)
Write cycle time
Transmit-only Mode Parameters
Output valid from V
V
V
Mode transition time
Transmit-only power-up
time
Endurance
Note 1:
CLK
CLK
high time
low time
2:
3:
4:
Parameter
IL
Not 100% tested. C
As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
The combined T
noise and spike suppression. This eliminates the need for a T
This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance
at: www.microchip.com
max.
AC CHARACTERISTICS
CLK
IH
SP
Symbol
T
T
T
T
T
T
T
T
SU
SU
and V
T
HD
SU
HD
T
T
T
T
F
B
VHIGH
T
VLOW
T
T
T
HIGH
LOW
T
T
BUF
VAA
VHZ
VPU
—
CLK
WR
AA
OF
SP
= total capacitance of one bus line in pF.
:
:
:
:
:
R
F
STA
DAT
STO
STA
DAT
HYS
Standard Mode
specifications are due to new Schmitt Trigger inputs which provide improved
4000
4700
4000
4700
4000
4700
4000
4700
Min
250
1M
—
—
—
—
—
—
—
—
—
0
0
1000
3500
2000
Max
100
300
250
500
—
—
—
—
—
—
—
—
50
10
—
—
—
—
™
Vcc= 4.5 - 5.5V
20 + .1
1300
1300
1300
Model which can be obtained from Microchip’s web site
Min
600
600
600
100
600
600
1M
C
Fast Mode
—
—
—
—
—
—
—
—
0
0
B
1000
Max
400
300
300
900
250
500
—
—
—
—
—
—
—
—
50
10
—
—
—
—
I
specification for standard operation.
cycles
Units
kHz
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
—
—
(Note 1)
(Note 1)
After this period the first clock
pulse is generated
Only relevant for repeated
Start condition
(Note 2)
—
—
(Note 2)
Time the bus must be free
before a new transmission
can start
(Note 1), C
(Note 3)
Byte or Page mode
—
—
—
—
—
25°C, V
mode (Note 4)
CC
24LC21
Remarks
= 5.0V, Block
B
DS21095J-page 3
100 pF