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CAT24AC128GYI-1.8TE13 数据表(PDF) 4 Page - Catalyst Semiconductor

部件名 CAT24AC128GYI-1.8TE13
功能描述  128kbit I2C Serial CMOS EEPROM With Three Chip Address Input Pins
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制造商  CATALYST [Catalyst Semiconductor]
网页  http://www.catalyst-semiconductor.com
标志 CATALYST - Catalyst Semiconductor

CAT24AC128GYI-1.8TE13 数据表(HTML) 4 Page - Catalyst Semiconductor

  CAT24AC128GYI-1.8TE13 Datasheet HTML 1Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 2Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 3Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 4Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 5Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 6Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 7Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 8Page - Catalyst Semiconductor CAT24AC128GYI-1.8TE13 Datasheet HTML 9Page - Catalyst Semiconductor Next Button
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CAT24AC128
4
Doc. No. 1028, Rev. I
Figure 3. Start/Stop Timing
Figure 2. Write Cycle Timing
Figure 1. Bus Timing
I2C BUS PROTOCOL
The features of the I2C bus protocol are defined as
follows:
(1) Data transfer may be initiated only when the bus is
not busy.
(2) During a data transfer, the data line must remain
stable whenever the clock line is high. Any changes
in the data line while the clock line is high will be
interpreted as a START or STOP condition.
START Condition
The START Condition precedes all commands to the
device, and is defined as a HIGH to LOW transition of
SDA when SCL is HIGH. The CAT24AC128 monitors
the SDA and SCL lines and will not respond until this
condition is met.
STOP Condition
A LOW to HIGH transition of SDA when SCL is HIGH
determines the STOP condition. All operations must end
with a STOP condition.
PIN DESCRIPTIONS
SCL: Serial Clock
The serial clock input clocks all data transferred into or
out of the device.
SDA: Serial Data/Address
The bidirectional serial data/address pin is used to
transfer all data into and out of the device. The SDA pin
is an open drain output and can be wire-ORed with other
open drain or open collector outputs.
WP: Write Protect
This input, when tied to GND, allows write operations to
the entire memory.
When this pin is tied to Vcc, the
entire memory is write protected. When left floating,
memory is unprotected.
A0, A1, A2: Device Address Inputs
These inputs set the device address when cascading
multiple devices. When these pins are left floating the
default values are zeroes. A maximum of eight devices
can be cascaded.
tHIGH
SCL
SDA IN
SDA OUT
tLOW
tF
tLOW
tR
tBUF
tSU:STO
tSU:DAT
tHD:DAT
tHD:STA
tSU:STA
tAA
tDH
tWR
STOP
CONDITION
START
CONDITION
ADDRESS
ACK
8TH BIT
BYTE n
SCL
SDA
START BIT
SDA
STOP BIT
SCL


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