CAT34C02YI-GT5A ON Semiconductor, CAT34C02YI-GT5A Datasheet - Page 5

• Manufacturer Part Number: CAT34C02YI-GT5A
• Description: IC EEPROM 2KB SRL CMOS 8TSSOP
• Manufacturer: ON Semiconductor

Specifications of CAT34C02YI-GT5A

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 2K (256 x 8)
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Write Operations
Byte Write
by Slave address, byte address and data to be written
(Figure 6). The Slave acknowledges all 3 bytes, and the
Master then follows up with a STOP, which in turn starts the
internal Write operation (Figure 7). During internal Write,
the Slave will not acknowledge any Read or Write request
from the Master.
Page Write
pages of 16 bytes each. A page is selected by the 4 most
significant bits of the address byte following the Slave
address, while the 4 least significant bits point to the byte
within the page. Up to 16 bytes can be written in one Write
cycle (Figure 8).
SDA OUT
In Byte Write mode the Master sends a START, followed
The CAT34C02 contains 256 bytes of data, arranged in 16
FROM TRANSMITTER
SDA IN
SCL
FROM RECEIVER
DATA OUTPUT
DATA OUTPUT
SCL FROM
MASTER
t
SU:STA
START
t
F
BUS RELEASE DELAY (TRANSMITTER)
t
HD:STA
t
LOW
1
1
t
Figure 4. Acknowledge Timing
AA
0
Figure 3. Slave Address Bits
t
HD:DAT
t
HIGH
Figure 5. Bus Timing
1
http://onsemi.com
ACK DELAY (≤ t
0
5
t
LOW
DEVICE ADDRESS
A
incremented after each data byte is loaded. If the Master
transmits more than 16 data bytes, then earlier bytes will be
overwritten by later bytes in a ‘wrap−around’ fashion
(within the selected page). The internal Write cycle starts
immediately following the STOP.
Acknowledge Polling
CAT34C02 is busy writing or is ready to accept commands.
Polling is implemented by interrogating the device with a
‘Selective Read’ command (see READ OPERATIONS).
as long as internal Write is in progress.
Delivery State
flag is set. The entire 2 kb memory is erased, i.e. all bytes are
FFh.
2
AA
The internal byte address counter is automatically
Acknowledge polling can be used to determine if the
The CAT34C02 will not acknowledge the Slave address,
The CAT34C02 is shipped ‘unprotected’, i.e. neither SWP
t
DH
)
A
8
1
t
SU:DAT
t
R
A
0
R/W
9
ACK SETUP (≥ t
BUS RELEASE DELAY
(RECEIVER)
t
SU:DAT
t
BUF
SU:STO
)