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PDF A24C256 Data sheet ( Hoja de datos )
| Número de pieza | A24C256 | |
| Descripción | 256K (32768 x 8) TWO-WIRE SERIAL EEPROM | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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AiT Semiconductor Inc.
www.ait-ic.com
A24C256
TWO-WIRE SERIAL EEPROM
256K (32768 X 8)
DESCRIPTION
A24C256 provides 262,144 bits of serial
electrically erasable and programmable read-only
memory (EEPROM) organized as 32,768 words
of 8 bits each.
The device is optimized for use in many industrial
and commercial applications where low-power
and low-voltage operations are essential.
The A24C256 is available SOP8 and TSSOP8
Package.
FEATURES
Two-Wire Serial Interface
VCC=1.8V To 5.5V
Bi-Directional Data Transfer Protocol
Internal Organized
A24C256, 32,768 X 8 (256K bits)
400KHz (1.8V, 2.7V & 5V) Compatibility
64-byte Page Write Mode
Partial Page Writes Allowed
Self-Timed Write Cycle (5ms Max)
High-Reliability
1 Million Write Cycles guaranteed
Data Retention > 100 Years
Operating Temperature: -40oC to +85oC
Available in SOP8 and TSSOP8 Package
ORDERING INFORMATION
Package Type
Part Number
A24C256M8R
SOP8
A24C256M8U
M8
A24C256M8VR
A24C256M8VU
A24C256TMX8R
TSSOP8
A24C256TMX8U
TMX8
A24C256TMX8VR
Note
A24C256TMX8VU
R: Tape & Reel
U: Tube
V: Halogen free Package
AiT provides all RoHS products,
suffix “ V “ means Halogen free Package
REV1.3
- MAY 2009 RELEASED, MAY 2015 UPDATED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A24C256
TWO-WIRE SERIAL EEPROM
256K (32768 X 8)
AC ELECTRICAL CHARACTERISTICS
TA=-40oC to +85oC, VCC=+1.8V to +5.5V, CL=1 TTL gate and 100pF, unless otherwise specified.
Parameter
Symbol
1.8-volt
5.0-volt
MIN TYP MAX MIN TYP MAX
Clock Frequency, SCL
fSCL
400 400
Clock Pulse Width Low
tLOW
1.2
- 0.6
-
Clock Pulse Width High
tHIGH
0.6
- 0.4
-
Noise Suppression Time
tI -
50
50
Clock Low to Data Out Valid
Time the bus must be free before
a new transmission can start
Start Hold Time
tAA
tBUF
tHD.STA
0.1
1.2
0.6
0.9 0.05
- 0.5
- 0.25
0.9
-
-
Start Setup Time
tSU.STA
0.6
- 0.25
-
Data In Hold Time
tHD.DAT
0
-0
-
Data In Setup Time
tSU.DAT
100
- 100
-
Inputs Rise Time
tR -
0.3
0.3
Inputs Fall Time
tF -
300
300
Stop Setup Time
tSU.STO
0.6
- 0.25
-
Data Out Hold Time
tDH 50
- 50
-
Write Cycle Time
tWR -
5
5
5.0V, 25oC, Byte Mode
Endurance 1M
-
-
NOTE: This parameter is characterized and is not 100% tested.
AC measurement conditions: RL(connects to VCC): 1.3KΩ(2.5V,5V),10KΩ(1.8V)
Input pulse voltages: 0.3VCC to 0.7VCC
Input rise and fall time: ≤50ns
Input and output timing reference voltages: 0.5VCC
The value of RL should be concerned according to the actual loading on the user’s system.
Unit
KHz
us
us
ns
us
us
us
us
us
ns
us
ns
us
ns
ms
Write
Cycles
REV1.3
- MAY 2009 RELEASED, MAY 2015 UPDATED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
Figure 1 Data Validity
A24C256
TWO-WIRE SERIAL EEPROM
256K (32768 X 8)
Figure 2 Start and Stop Definition
Figure 3 Output Acknowledge
REV1.3
- MAY 2009 RELEASED, MAY 2015 UPDATED -
- 11 -
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet A24C256.PDF ] | |
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