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X4643S8Z-2.7A PDF预览

X4643S8Z-2.7A

更新时间： 2024-02-22 02:48:14
品牌 Logo 应用领域
瑞萨 - RENESAS 可编程只读存储器电动程控只读存储器电可擦编程只读存储器双倍数据速率光电二极管内存集成电路
页数 文件大小 规格书
21页 329K
描述
X4643S8Z-2.7A

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X4643S8Z-2.7A 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：SOP, SOP8,.25Reach Compliance Code：unknown
风险等级：5.84I2C控制字节：10100DDR
JESD-30 代码：R-PDSO-G8内存密度：65536 bit
内存集成电路类型：EEPROM内存宽度：8
端子数量：8字数：8192 words
字数代码：8000最高工作温度：70 °C
最低工作温度：组织：8KX8
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE并行/串行：SERIAL
电源：3/5 V认证状态：Not Qualified
串行总线类型：I2C最大待机电流：0.000001 A
子类别：EEPROMs最大压摆率：0.003 mA
表面贴装：YES技术：CMOS
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
写保护：HARDWARE/SOFTWAREBase Number Matches：1

X4643S8Z-2.7A 数据手册

 浏览型号X4643S8Z-2.7A的Datasheet PDF文件第6页浏览型号X4643S8Z-2.7A的Datasheet PDF文件第7页浏览型号X4643S8Z-2.7A的Datasheet PDF文件第8页浏览型号X4643S8Z-2.7A的Datasheet PDF文件第10页浏览型号X4643S8Z-2.7A的Datasheet PDF文件第11页浏览型号X4643S8Z-2.7A的Datasheet PDF文件第12页 
X4643, X4645  
Serial Write Operations  
BYTE WRITE  
eight bits of data. After receiving the 8 bits of the Data  
Byte, the device again responds with an acknowledge.  
The master then terminates the transfer by generating a  
stop condition, at which time the device begins the inter-  
nal write cycle to the nonvolatile memory. During this  
internal write cycle, the device inputs are disabled, so the  
device will not respond to any requests from the master.  
The SDA output is at high impedance. See Figure 8.  
For a write operation, the device requires the Slave  
Address Byte and a Word Address Byte. This gives the  
master access to any one of the words in the array.  
After receipt of the Word Address Byte, the device  
responds with an acknowledge, and awaits the next  
Figure 8. Byte Write Sequence  
S
t
Signals from  
the Master  
S
t
o
Slave  
WordAddress WordAddress  
a
r
Data  
Byte 1  
Byte 0  
SDA Bus  
1 0 1 0  
0
A
C
K
A
C
K
A
C
K
A
C
K
Signals from  
the Slave  
A write to a protected block of memory will suppress  
the acknowledge bit.  
counter reaches the end of the page, it “rolls over” and  
goes back to ‘0’ on the same page. This means that  
the master can write 64-bytes to the page starting at  
any location on that page. If the master begins writing  
at location 60, and loads 12-bytes, then the first 4-  
bytes are written to locations 60 through 63, and the  
last 8-bytes are written to locations 0 through 7. After-  
wards, the address counter would point to location 8 of  
the page that was just written. If the master supplies  
more than 64-bytes of data, then new data over-writes  
the previous data, one byte at a time.  
Page Write  
The device is capable of a page write operation. It is  
initiated in the same manner as the byte write opera-  
tion; but instead of terminating the write cycle after the  
first data byte is transferred, the master can transmit  
an unlimited number of 8-bit bytes. After the receipt of  
each byte, the device will respond with an acknowl-  
edge, and the address is internally incremented by  
one. The page address remains constant. When the  
Figure 9. Page Write Operation  
(1 < n < 64)  
S
S
t
a
r
Signals from  
the Master  
Data  
Data  
t
Word Ad-  
Word Ad-  
Slave  
o
SDA Bus  
1 0 1 0  
0
A
C
A
C
A
C
A
C
A
C
Signals from  
the Slave  
FN8123.0  
March 29, 2005  
9
1...6789101112...21

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