M24256-BWDW6TP STMicroelectronics, M24256-BWDW6TP Datasheet - Page 8
![IC EEPROM 256KBIT 400KHZ 8TSSOP](/photos/5/43/54342/497-8-tssop_sml.jpg)
M24256-BWDW6TP
Manufacturer Part Number
M24256-BWDW6TP
Description
IC EEPROM 256KBIT 400KHZ 8TSSOP
Manufacturer
STMicroelectronics
Datasheet
1.M24256-BWMN6TP.pdf
(42 pages)
Specifications of M24256-BWDW6TP
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
400kHz
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-TSSOP
Density
256Kb
Interface Type
Serial (I2C)
Organization
32Kx8
Access Time (max)
900ns
Frequency (max)
400KHz
Write Protection
Yes
Data Retention
40Year
Operating Supply Voltage (typ)
3.3/5V
Package Type
TSSOP
Operating Temp Range
-40C to 85C
Supply Current
2mA
Operating Supply Voltage (min)
2.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-8622-2
M24256-BWDW6TP
M24256-BWDW6TP
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M24256-BWDW6TP
Manufacturer:
TI
Quantity:
12 400
Part Number:
M24256-BWDW6TP
Manufacturer:
ST
Quantity:
20 000
Signal description
2
2.1
2.2
2.3
2.4
8/42
Signal description
Serial Clock (SCL)
This input signal is used to strobe all data in and out of the device. In applications where this
signal is used by slave devices to synchronize the bus to a slower clock, the bus master
must have an open drain output, and a pull-up resistor must be connected from Serial Clock
(SCL) to V
most applications, though, this method of synchronization is not employed, and so the pull-
up resistor is not necessary, provided that the bus master has a push-pull (rather than open
drain) output.
Serial Data (SDA)
This bidirectional signal is used to transfer data in or out of the device. It is an open drain
output that may be wire-OR’ed with other open drain or open collector signals on the bus. A
pull up resistor must be connected from Serial Data (SDA) to V
the value of the pull-up resistor can be calculated).
Chip Enable (E0, E1, E2)
These input signals are used to set the value that is to be looked for on the three least
significant bits (b3, b2, b1) of the 7-bit device select code. These inputs must be tied to V
or V
are read as Low (0,0,0).
Figure 4.
Write Control (WC)
This input signal is useful for protecting the entire contents of the memory from inadvertent
write operations. Write operations are disabled to the entire memory array when Write
Control (WC) is driven High. When unconnected, the signal is internally read as V
Write operations are allowed.
When Write Control (WC) is driven High, device select and address bytes are
acknowledged, Data bytes are not acknowledged.
SS
, to establish the device select code. When not connected (left floating), these inputs
CC
Device select code
.
(Figure 6
indicates how the value of the pull-up resistor can be calculated). In
Doc ID 6757 Rev 23
E i
M24xxx
V CC
V SS
M24256-BF, M24256-BR, M24256-BW, M24256-DR
E i
M24xxx
V CC
V SS
Ai12806
CC
.
(Figure 6
indicates how
IL
, and
CC