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SLX24C08/16/P View Datasheet(PDF) - Siemens AG

Part NameDescriptionManufacturer
SLX24C08/16/P 8/16 Kbit (1024/2048 × 8 bit) Serial CMOS-EEPROM with I2C Synchronous 2-Wire Bus and Page Protection Mode™ Siemens
Siemens AG Siemens
SLX24C08/16/P Datasheet PDF : 27 Pages
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SLx 24C08/16/P
The conventions for the serial clock line and the bidirectional data line are shown in
figure 4.
SCL
1
2
8
9
1
9
SDA
ACK
ACK
START Condition
Data allowed
to Change
Acknowledge
STOP Condition
IED02128
Figure 4
I2C-Bus Timing Conventions for START Condition, STOP Condition, Data Valida-
tion and Transfer of Acknowledge ACK
Standby
START Condition
STOP Condition
Acknowledge
Data Transfer
Mode in which the bus is not busy (no serial transmission, no
programming): both clock (SCL) and data line (SDA) are in high
state. The device enters the standby mode after a STOP condition
or after a programming cycle.
High to low transition of SDA when SCL is high, preceding all
commands.
Low to high transition of SDA when SCL is high, terminating all
communications. A STOP condition initiates an EEPROM
programming cycle. A STOP condition after reading a data byte
from the EEPROM initiates the Standby mode.
A successful reception of eight data bits is indicated by the
receiver by pulling down the SDA line during the following clock
cycle of SCL (ACK). The transmitter on the other hand has to
release the SDA line after the transmission of eight data bits.
The EEPROM as the receiving device responds with an
acknowledge, when addressed. The master, on the other side,
acknowledges each data byte transmitted by the EEPROM and
can at any time end a read operation by releasing the SDA line (no
ACK) followed by a STOP condition.
Data must change only during low SCL state, data remains valid
on the SDA bus during high SCL state. Nine clock pulses are
required to transfer one data byte, the most significant bit (MSB)
is transmitted first.
Semiconductor Group
8
1998-07-27
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