收藏本站
24AA08/24LC08B
6.0
6.1
WRITE OPERATION
Byte Write
words prior to generating the Stop condition, the
address counter will roll over and the previously
received data will be overwritten. As with the byte write
operation, once the Stop condition is received an
Following the Start condition from the master, the
internal write cycle will begin ( Figure 6-2 ).
device code (4 bits), the block address (3 bits) and the
R/W bit, which is a logic-low, is placed onto the bus by
the master transmitter. This indicates to the addressed
slave receiver that a byte with a word address will
follow once it has generated an Acknowledge bit during
the ninth clock cycle. Therefore, the next byte transmit-
ted by the master is the word address and will be
written into the Address Pointer of the 24XX08. After
receiving another Acknowledge signal from the
24XX08, the master device will transmit the data word
to be written into the addressed memory location. The
24XX08 acknowledges again and the master
generates a Stop condition. This initiates the internal
write cycle and, during this time, the 24XX08 will not
generate Acknowledge signals ( Figure 6-1 ).
6.2 Page Write
The write control byte, word address and the first data
byte are transmitted to the 24XX08 in the same way as
in a byte write. However, instead of generating a Stop
condition, the master transmits up to 16 data bytes to
Note:
6.3
Page write operations are limited to writ-
ing bytes within a single physical page,
regardless of the number of bytes
actually being written. Physical page
boundaries start at addresses that are
integer multiples of the page buffer size
(or ‘page-size’) and end at addresses that
are integer multiples of [page size – 1]. If
a Page Write command attempts to write
across a physical page boundary, the
result is that the data wraps around to the
beginning of the current page (overwriting
data previously stored there), instead of
being written to the next page, as might be
expected. It is therefore necessary for the
application software to prevent page write
operations that would attempt to cross a
page boundary.
Write Protection
the 24XX08, which are temporarily stored in the on-
chip page buffer and will be written into memory once
the master has transmitted a Stop condition. Upon
receipt of each word, the four lower-order Address
Pointer bits are internally incremented by ‘ 1 ’. The
higher-order 7 bits of the word address remain
constant. If the master should transmit more than 16
The WP pin allows the user to write-protect the entire
array (000-3FF) when the pin is tied to V CC . If the pin is
tied to V SS the write protection is disabled.
The Chip Select package does not support the write-
protect feature.
FIGURE 6-1:
BYTE WRITE
Bus Activity
Master
S
T
A
R
T
Control
Byte
Word
Address
Data
S
T
O
P
SDA Line
S 1 0 1 0 X B1 B0 0
P
Bus Activity
x = “don’t care”
Block
Select
Bits
A
C
K
A
C
K
A
C
K
FIGURE 6-2:
PAGE WRITE
Bus Activity
Master
S
T
A
R
T
Control
Byte
Word
Address (n)
Data (n)
Data (n + 1)
Data (n + 15)
S
T
O
P
SDA Line
S 1 0 1 0 X B1B0 0
P
Bus Activity
x = “don’t care”
Block
Select
Bits
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
DS21710K-page 8
? 2002-2012 Microchip Technology Inc.
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
24AA16-I/STG IC EEPROM 16KBIT 400KHZ 8TSSOP
24AA256-I/MS IC EEPROM 256KBIT 400KHZ 8MSOP
24AA32A/SN IC EEPROM 32KBIT 400KHZ 8SOIC
24AA32AF-I/SN IC SRL EEPROM 4KX8 1.8V 8-SOIC
24AA512-I/ST14 IC EEPROM 512KBIT 400KHZ 14TSSOP
24AA52T-I/MC IC EEPROM 2KBIT 400KHZ 8DFN
24AA64F-I/MS IC SRL EEPROM 8KX8 1.8V 8-MSOP
24AA65/P IC EEPROM 64KBIT 400KHZ 8DIP
相关代理商/技术参数
24AA08/WF15K 制造商:Microchip Technology Inc 功能描述:8K, 1K X 8 1.8V SERIAL EE WAFER ON FR - Gel-pak, waffle pack, wafer, diced wafer on film
24AA08_09 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K I2C? Serial EEPROM
24AA080 功能描述:整流器/与可变电容器 RED 1.8-6.0 PFD RoHS:否 制造商:Xicon 电容范围:2.8 pF to 12.5 pF 容差: 电压额定值:200 V 工作温度范围:- 35 C to + 85 C 端接类型:SMD/SMT 产品:Trimmer Capacitors - Ceramic Dielectric
24AA080-IP 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K/16K 1.8V SPI Bus Serial EEPROM
24AA080-ISN 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K/16K 1.8V SPI Bus Serial EEPROM
24AA080-P 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K/16K 1.8V SPI Bus Serial EEPROM
24AA080-SN 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K/16K 1.8V SPI Bus Serial EEPROM
24AA081 功能描述:整流器/与可变电容器 NO COLOR 2.8-12.5PFD RoHS:否 制造商:Xicon 电容范围:2.8 pF to 12.5 pF 容差: 电压额定值:200 V 工作温度范围:- 35 C to + 85 C 端接类型:SMD/SMT 产品:Trimmer Capacitors - Ceramic Dielectric