AT24C256C
Description
3.
Description
The AT24C256C 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’s cascading feature allows up
to eight devices to share a common 2‑wire bus. The device is optimized for use in many industrial and
commercial applications where low‑power and low‑voltage operation are essential. The devices are
available in space‑saving 8‑lead SOIC, 8‑lead TSSOP, 8‑pad UDFN and 8‑ball VFBGA packages. All
packages operate from 1.7V to 5.5V.
3.1
System Configuration Using 2-Wire Serial EEPROMs
VCC
t
R(max)
R
R
PUP(max) =
PUP(min) =
0.8473 x C
L
V
- V
OL(max)
CC
V
CC
I
OL
SCL
SDA
WP
I2C Bus Master:
Microcontroller
A0
A1
VCC
WP
A0
VCC
WP
A0
VCC
WP
A1
A1
Slave 0
Slave 1
Slave 7
AT24CXXX
AT24CXXX
AT24CXXX
A2
SDA
SCL
A2
SDA
SCL
A2
SDA
SCL
GND
GND
GND
GND
DS20006042A-page 7
Datasheet
© 2018 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
