M24C16-F View Datasheet(PDF) - STMicroelectronics

Part Name

Description

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M24C16-F

16-Kbit serial I2C bus EEPROM

STMicroelectronics 

Signal description

2

Signal description

M24C16-W M24C16-R M24C16-F

2.1

Serial Clock (SCL)

The signal applied on the SCL input is used to strobe the data available on SDA(in) and to

output the data on SDA(out).

2.2

Serial Data (SDA)

SDA is an input/output used to transfer data in or data out of the device. SDA(out) 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 VCC (Figure 11

indicates how to calculate the value of the pull-up resistor).

2.3

2.4

2.5

2.5.1

2.5.2

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. Write operations are enabled when Write Control (WC) is either

driven low or left floating.

When Write Control (WC) is driven high, device select and address bytes are

acknowledged, Data bytes are not acknowledged.

VSS (ground)

VSS is the reference for the VCC supply voltage.

Supply voltage (VCC)

Operating supply voltage (VCC)

Prior to selecting the memory and issuing instructions to it, a valid and stable VCC voltage

within the specified [VCC(min), VCC(max)] range must be applied (see Operating conditions

in Section 8: DC and AC parameters). In order to secure a stable DC supply voltage, it is

recommended to decouple the VCC line with a suitable capacitor (usually of the order of

10 nF to 100 nF) close to the VCC/VSS package pins.

This voltage must remain stable and valid until the end of the transmission of the instruction

and, for a write instruction, until the completion of the internal write cycle (tW).

Power-up conditions

The VCC voltage has to rise continuously from 0 V up to the minimum VCC operating voltage

(see Operating conditions in Section 8: DC and AC parameters) and the rise time must not

vary faster than 1 V/µs.

8/39

DocID023494 Rev 6

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