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| 型号： | AM24LC08SA |
| 英文描述： | 2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
| 中文描述： | 2线串行8K的位（1024 × 8）的CMOS电可擦除可编程ROM |
| 文件页数： | 5/10页 |
| 文件大小： | 202K |
| 代理商： | AM24LC08SA |
2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM
AM24LC08
Anachip Corp.
www.anachip.com.tw
Rev. A1 Oct 20, 2003
4/10
ATC
Pin Descriptions
Serial Clock (SCL)
The SCL input is used to clock all data into and out
of the device.
Serial Data (SDA)
SDA is a bidirection pin used to transfer data into
and out of the device.
It is an open drain output and may be wire-ORed
with any number of open drain or open collector
outputs. Thus, the SDA bus requires a pull-up
resistor to Vcc (typical 4.7KΩ for 100KHz)
Device Address Inputs (A0, A1, A2)
The following table (Table A) shows the active pins
across the AM24LCXX device family.
Table A
Device
A0
A1
A2
AM24LC02
ADR
AM24LC04
XP
ADR
AM24LC08
XP
ADR
AM24LC16
XP
ADR indicates the device address pin.
XP indicates that device address pin don’t care but
refers to an internal PAGE BLOCK memory
segment.
Write Protection (WP)
If WP is connected to Vcc, PROGRAM operation
onto the whole memory will not be executed. READ
operations are possible. If WP is connected to Vss,
normal memory operation is enabled, READ/WRITE
over the entire memory is possible.
Functional Description
Applications
ATC’s electrically erasable programmable read only
memories (EEPROMs) write protect function, two
write modes, three read modes, and a wide variety
of memory size. Typical applications for the I
2C bus
and
AM24LCXX
memories
are
included
in
SANs(small-area-networks),
stereos,
televisions,
automobiles and other scaled-down systems that
don't require tremendous speeds but instead cost
efficiency and design simplicity.
Endurance and Data Retention
The AM24LC08 is designed for applications requiring
up to 1M programming cycles (BYTE WRITE and
PAGE WRITE). It provides 40 years of secure data
retention without power.
Device Operation
The AM24LC08 support a bi-directional bus oriented
protocol. The protocol defines any device that sends
data onto the bus as a transmitter and the receiving
device as the receiver. The device controlling the
transfer is the master and the device that is
controlled is the slave. The master will always
initiate data transfers and provide the clock for both
transmit and receive operations. Therefore, the
AM24LC08 is considered a slave in all applications.
Clock and Data Conventions
Data states on the SDA line can change only during
SCL LOW. SDA state changes during SCL HIGH
are reserved for indicating start and stop conditions.
(Shown in Figures 1 and 2)
Start Condition
A HIGH to LOW transition of the SDA line while the
clock (SCL) is HIGH determines a START condition.
All commands must be preceded by a START
condition. (Shown in Figure 2)
Stop Condition
A LOW to HIGH transition of the SDA line while the
clock (SCL) is HIGH determines a STOP condition.
All operations must be ended with a STOP condition.
(Shown in Figure 2)
Acknowledge
Each receiving device, when addressed, is obliged
to generate an acknowledge after the reception of
each byte. The master device must generate an
extra clock pulse which is associated with this
acknowledge bit. The device that acknowledges,
has to pull down the SDA line during the
acknowledge clock pulse in such a way that the
SDA line is stable LOW during the HIGH period of
the acknowledge related clock pulse. Of course,
setup and hold times must be taken into account. A
master must signal an end of data to the slave by
not generating an acknowledge bit on the last byte
that has been clocked out of the slave. In this case,
the slave must leave the data line HIGH to enable
the master to generate the STOP condition. (Shown
in Figure 3)
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| AM24LC08VN | 2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
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相关代理商/技术参数 |
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| AM24LC08V | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
| AM24LC08VN | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
| AM24LC08VNA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
| AM24LC08VS | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
| AM24LC08VSA | 制造商:ANACHIP 制造商全称:Anachip Corp 功能描述:2-Wire Serial 8K-Bit (1024 x 8) CMOS Electrically Erasable PROM |
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