参数资料
| 型号： | 24AA014H-I/MS |
| 厂商： | Microchip Technology |
| 文件页数： | 11/28页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 1KBIT 400KHZ 8MSOP |
| 产品培训模块： | I2C Serial EEPROM |
| 标准包装： | 100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 1K (128 x 8) |
| 速度： | 100kHz，400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 1444 (CN2011-ZH PDF) |
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24AA014H/24LC014H
8.0
READ OPERATIONS
Once the word address is sent, the master generates a
Start condition following the acknowledge. This
Read operations are initiated in the same way as write
operations, with the exception that the R/W bit of the
slave address is set to ‘ 1 ’. There are three basic types
of read operations: current address read, random read
and sequential read.
terminates the write operation, but not before the
internal Address Pointer is set. The master then issues
the control byte again but with the R/W bit set to a ‘ 1 ’.
The 24AA014H/24LC014H will then issue an
acknowledge and transmits the eight-bit data word.
The master will not acknowledge the transfer, but does
8.1
Current Address Read
generate a Stop condition and the 24AA014H/
The 24AA014H/24LC014H contains an address coun-
ter that maintains the address of the last word
accessed, internally incremented by one. Therefore, if
the previous read access was to address n, the next
24LC014H discontinues transmission (Figure 8-2).
After this command, the internal address counter will
point to the address location following the one that was
just read.
current address read operation would access data from
address n + 1. Upon receipt of the slave address with
8.3
Sequential Read
the R/W bit set to ‘ 1 ’, the 24AA014H/24LC014H issues
an acknowledge and transmits the 8-bit data word. The
master will not acknowledge the transfer, but does
generate a Stop condition and the 24AA014H/
24LC014H discontinues transmission (Figure 8-1).
Sequential reads are initiated in the same way as a
random read except that after the 24AA014H/
24LC014H transmits the first data byte, the master
issues an acknowledge as opposed to a Stop condition
in a random read. This directs the 24AA014H/
24LC014H to transmit the next sequentially addressed
8.2
Random Read
8-bit word (Figure 8-3).
Random read operations allow the master to access
any memory location in a random manner. To perform
this type of read operation, the word address must first
be set. This is done by sending the word address to the
24AA014H/24LC014H as part of a write operation.
To provide sequential reads the 24AA014H/24LC014H
contains an internal Address Pointer which is
incremented by one at the completion of each
operation. This Address Pointer allows the entire
memory contents to be serially read during one
operation. The internal Address Pointer will
automatically roll over from address 07Fh to address
000h.
FIGURE 8-1:
CURRENT ADDRESS READ
Bus Activity
Master
S
T
A
R
T
Control
Byte
Data
S
T
O
P
SDA Line
Bus Activity
? 2008 Microchip Technology Inc.
S
A
C
K
Preliminary
N
O
A
C
K
P
DS22077B-page 11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 24AA014HT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K I2C? Serial EEPROM with Half-Array Write-Protect |
| 24AA014HT-E/MNY | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K I2C? Serial EEPROM with Half-Array Write-Protect |
| 24AA014HT-E/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K I2C? Serial EEPROM with Half-Array Write-Protect |
| 24AA014HT-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K I2C? Serial EEPROM with Half-Array Write-Protect |
| 24AA014HT-E/SN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K I2C? Serial EEPROM with Half-Array Write-Protect |
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