參數(shù)資料
型號(hào)： S524LB0XB1
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 32K/64K-bit Serial EEPROM
中文描述： 32K/64K-bit串行EEPROM
文件頁(yè)數(shù)： 12/20頁(yè)
文件大小： 145K
代理商： S524LB0XB1
S524LB0D91/B0DB1 SERIAL EEPROM
DATA SHEET
7-12
RANDOM ADDRESS BYTE READ OPERATION
Using random read operations, the master can access any memory location at any time. Before it issues the
slave address with the R
/
W
bit set to “1”, the master must first perform a “dummy” write operation. This operation
is performed in the following steps:
1. The master first issues a start condition, the slave address, and the word address (the first and the second
addresses) to be read. (This step sets the internal word address pointer of the S524LB0D91/B0DB1 to the
desired address.)
2. When the master receives an ACK for the word address, it immediately re-issues a start condition followed
by another slave address, with the R
/
W
bit set to “1”.
3. The S524LB0D91/B0DB1 then sends an ACK and the 8-bit data stored at the pointed address.
4. At this point, the master does not acknowledge the transmission, generating a stop condition.
5. The S524LB0D91/B0DB1 stops transmitting data and reverts to stand-by mode (see Figure 7-14).
First
Word Address
Second
Word Address
Slave
Address
Start
Stop
A
C
K
A
C
K
A
C
K
A
C
K
Slave
Address
Start
Data
N
O
A
C
K
Figure 7-14. Random Address Byte Read Operation
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