M24C01 STMicroelectronics, M24C01 Datasheet - Page 4

• Manufacturer Part Number: M24C01
• Description: 16/8/4/2/1 Kbit Serial IC Bus EEPROM
• Manufacturer: STMicroelectronics

M24C16, M24C08, M24C04, M24C02, M24C01
Figure 4. I
disabled – the device will not respond to any
command. In the same way, when V
the operating voltage, below the POR threshold
value, all operations are disabled and the device
will not respond to any command. A stable and
valid V
logic signal.
SIGNAL DESCRIPTION
Serial Clock (SCL)
The SCL input pin is used to strobe all data in and
out of the memory. In applications where this line
is used by slaves to synchronize the bus to a
slower clock, the master must have an open drain
output, and a pull-up resistor must be connected
from the SCL line to V
the value of the pull-up resistor can be calculated).
In most applications, though, this method of
synchronization is not employed, and so the pull-
up resistor is not necessary, provided that the
4/20
CC
SCL
SDA
SCL
SDA
SCL
SDA
2
must be applied before applying any
C Bus Protocol
CONDITION
START
CONDITION
CC
START
. (Figure 3 indicates how
MSB
1
MSB
1
2
CC
drops from
2
INPUT
SDA
3
3
CHANGE
SDA
master has a push-pull (rather than open drain)
output.
Serial Data (SDA)
The SDA pin is bi-directional, and is used to
transfer data in or out of the memory. 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 the SDA
bus to V
the pull-up resistor can be calculated).
Chip Enable (E2, E1, E0)
These chip enable inputs 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 (but
see the description of memory addressing, on
page 6, for more details). These inputs may be
driven dynamically or tied to V
establish the device select code (but note that the
V
compatible, not TTL compatible).
IL
and V
7
CC
7
IH
. (Figure 3 indicates how the value of
levels for the inputs are CMOS
8
8
ACK
9
ACK
CONDITION
9
STOP
CONDITION
STOP
CC
AI00792
or V
SS
to