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11AA011-ISN 参数 Datasheet PDF下载

11AA011-ISN图片预览
型号: 11AA011-ISN
PDF下载: 下载PDF文件 查看货源
内容描述: 1K - 16K UNI / O ?串行EEPROM系列数据手册 [1K-16K UNI/O® Serial EEPROM Family Data Sheet]
分类和应用: 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
文件页数/大小: 44 页 / 801 K
品牌: MICROCHIP [ MICROCHIP ]
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11AAXXX/11LCXXX  
4.0  
DEVICE COMMANDS  
After the device address byte, a command byte must  
be sent by the master to indicate the type of operation  
to be performed. The code for each instruction is listed  
in Table 4-1.  
TABLE 4-1:  
INSTRUCTION SET  
Instruction Name Instruction Code Hex Code  
Description  
READ  
CRRD  
WRITE  
WREN  
WRDI  
RDSR  
WRSR  
ERAL  
SETAL  
0000 0011  
0000 0110  
0110 1100  
1001 0110  
1001 0001  
0000 0101  
0110 1110  
0110 1101  
0110 0111  
0x03  
0x06  
0x6C  
0x96  
0x91  
0x05  
0x6E  
0x6D  
0x67  
Read data from memory array beginning at specified address  
Read data from current location in memory array  
Write data to memory array beginning at specified address  
Set the write enable latch (enable write operations)  
Reset the write enable latch (disable write operations)  
Read STATUS register  
Write STATUS register  
Write ‘0x00’ to entire array  
Write ‘0xFF’ to entire array  
that the slave should output the next data byte. This  
continues until the master sends a NoMAK, which ends  
the operation.  
4.1  
Read Instruction  
The Read command allows the master to access any  
memory location in a random manner. After the READ  
instruction has been sent to the slave, the two bytes of  
the Word Address are transmitted, with an Acknowl-  
edge sequence being performed after each byte. Then,  
the slave sends the first data byte to the master. If more  
data is to be read, the master sends a MAK, indicating  
To provide sequential reads in this manner, the 11XX  
contains an internal Address Pointer which is incre-  
mented by one after the transmission of each byte. This  
Address Pointer allows the entire memory contents to  
be serially read during one operation. When the highest  
address is reached, the Address Pointer rolls over to  
address ‘0x000’ if the master chooses to continue the  
operation by providing a MAK.  
FIGURE 4-1:  
READ COMMAND SEQUENCE  
Device Address  
Standby Pulse  
Start Header  
SCIO  
0 1 0 1 0 1 0 1  
1 0 1 0 0 0 0 0(1)  
Word Address LSB  
Command  
Word Address MSB  
7 6 5 4 3 2 1 0  
15 14 13 12 11 10 9 8  
SCIO  
0 0 0 0 0 0 1 1  
Data Byte n  
Data Byte 2  
Data Byte 1  
7 6 5 4 3 2 1 0  
SCIO  
7 6 5 4 3 2 1 0  
7 6 5 4 3 2 1 0  
Note 1: For the 11XXXX1, this bit must be a ‘1’.  
DS22067H-page 10  
Preliminary  
2010 Microchip Technology Inc.  
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