M24C64-W STMICROELECTRONICS [STMicroelectronics], M24C64-W Datasheet - Page 8

• Manufacturer Part Number: M24C64-W
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Signal description
2
2.1
2.2
2.3
2.4
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Signal description
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).
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 V
indicates how to calculate the value of the pull-up resistor).
Chip Enable (E2, E1, E0)
(E2,E1,E0) 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 (see
be tied to V
are read as low (0).
For the 5-balls WLCSP package, the (E2,E1,E0) inputs are internally connected to (0,0,1).
Figure 5.
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.
CC
Device select code
or V
SS
, as shown in
Doc ID 16891 Rev 27
Figure
E i
M24xxx
V CC
V SS
5. When not connected (left floating), these inputs
M24C64-W M24C64-R M24C64-F M24C64-DF
E i
M24xxx
V CC
V SS
Ai12806
Table
2). These inputs must
CC
(Figure 13