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參數(shù)資料
| 型號： | x76f102 |
| 元件分類： | FLASH |
| 英文描述： | 4 Mbit Uniform Sector, Serial Flash Memory |
| 中文描述： | 4兆位統(tǒng)一部門，串行閃存 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大小： | 104K |
| 代理商： | X76F102 |
X76F102
4
Figure 2. Data Validity
Figure 3. Definition of Start and Stop Conditions
Table 1. X76F102 Instruction Set
Illegal command codes will be disregarded. The part will respond with a “no-ACK” to the illegal byte and then return to
the standby mode. All write/read operations require a password.
Command
after Start
1 0 0 S
3
1 0 0 S
3
1 1 1 1 1 1 0 0
1 1 1 1 1 1 1 0
0 1 0 1 0 1 0 1
Command Description
Password
used
S
2
S
1
S
0
0
Sector Write
Write
S
2
S
1
S
0
1
Sector Read
Read
Change Write Password
Change Read Password
Password ACK Command
Write
Write
None
SCL
SDA
Data Stable
Data
Change
SCL
SDA
Start Condition
Stop Condition
PROGRAM OPERATIONS
Sector Write
The sector write mode requires issuing the 8-bit write
command followed by the password and then the data
bytes transferred as illustrated in figure 4. The write com-
mand byte contains the address of the sector to be writ-
ten. Data is written starting at the first address of a sector
and eight bytes must be transferred. After the last byte to
be transferred is acknowledged a stop condition is issued
which starts the nonvolatile write cycle. If more or less
than 8 bytes are transferred, the data in the sector
remains unchanged.
ACK Polling
Once a stop condition is issued to indicate the end of the
host’s write sequence, the X76F102 initiates the internal
nonvolatile write cycle. In order to take advantage of the
typical 5ms write cycle, ACK polling can begin immedi-
ately. This involves issuing the start condition followed by
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