ST14C02C ST Microelectronics, ST14C02C Datasheet - Page 8

• Manufacturer Part Number: ST14C02C
• Description: Memory Card IC 2 Kbit 256 x 8 Serial I2C Bus EEPROM
• Manufacturer: ST Microelectronics

ST14C02C
Figure 9. Read Mode Sequences
Sequential Read
This mode can be initiated with either a Current
Address Read or a Random Address Read. How-
ever, in this case the master does acknowledge
the data byte output, and the memory continues to
output the next byte in sequence. To terminate the
stream of bytes, the master must not acknowledge
the last byte output, and must generate a STOP
condition. The output data comes from consecu-
tive byte addresses, with the internal byte address
counter automatically incremented after each byte
output. After the last memory address, the address
counter will ‘roll-over’ and the memory will contin-
ue to output data from the start of the memory
block.
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CURRENT
ADDRESS
READ
RANDOM
ADDRESS
READ
SEQUENTIAL
CURRENT
READ
SEQUENTIAL
RANDOM
READ
DEV SEL *
DEV SEL *
DEV SEL
DEV SEL
ACK
DATA OUT N
R/W
R/W
R/W
R/W
ACK
ACK
ACK
ACK
NO ACK
DATA OUT 1
BYTE ADDR
BYTE ADDR
DATA OUT
Acknowledge in Read Mode
In all read modes the memory waits for an ac-
knowledgment during the 9
does not pull the SDA line low during this time, the
memory device terminates the data transfer and
switches to its standby state.
NO ACK
ACK
ACK
ACK
DEV SEL *
DEV SEL *
ACK
ACK
ACK
R/W
R/W
DATA OUT N
DATA OUT 1
DATA OUT
th
bit time. If the master
NO ACK
NO ACK
ACK
AI01942