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M24256-BR Datasheet(PDF) 6 Page - STMicroelectronics

Part # M24256-BR
Description  256-Kbit serial I짼C bus EEPROM
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24256-BR Datasheet(HTML) 6 Page - STMicroelectronics

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Description
M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF
6/40
Doc ID 6757 Rev 30
1
Description
The M24256 is a 256-Kbit I2C-compatible EEPROM (Electrically Erasable PROgrammable
Memory) organized as 32 K × 8 bits.
The M24256-BW can operate with a supply voltage from 2.5 V to 5.5 V, the M24256-BR and
M24256-DR can operate with a supply voltage from 1.8 V to 5.5 V, and the M24256-BF and
M24256-DF can operate with a supply voltage from 1.7 V to 5.5 V. All these devices operate
with a clock frequency of 1 MHz (or less), over an ambient temperature range of –40 °C /
+85 °C.
The M24256-Dx offers an additional page, named the Identification Page (64 bytes). The
Identification Page can be used to store sensitive application parameters which can be
(later) permanently locked in Read-only mode.
Figure 1.
Logic diagram
Table 1.
Signal names
Signal name
Function
Direction
E2, E1, E0
Chip Enable
Input
SDA
Serial Data
I/O
SCL
Serial Clock
Input
WC
Write Control
Input
VCC
Supply voltage
VSS
Ground


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