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參數(shù)資料
| 型號： | ST24W16M1TR |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | 16 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection |
| 中文描述： | 16千位串行I2C總線的EEPROM與用戶定義的塊寫保護(hù) |
| 文件頁數(shù)： | 9/17頁 |
| 文件大小： | 126K |
| 代理商： | ST24W16M1TR |
Write Operations
The Multibyte Write mode (only available on the
ST24/25C16 versions) is selected when the MODE
pin is at V
IH
and the Page Write mode when MODE
pin is at V
IL
. The MODE pin may be driven dynami-
cally with CMOS input levels.
Following a START condition the master sends a
device select code with the RW bit reset to ’0’. The
memory acknowledges this and waits for a byte
address. The byte address of 8 bits provides ac-
cess to any of the 256 bytes of one memory block.
After receipt of the byte address the device again
responds with an acknowledge.
For the ST24/25W16 versions, any write command
with WC = ’1’ (during a period of time from the
START condition untill the end of the Byte Address)
will not modify data and will NOT be acknowledged
on data bytes, as in Figure 10.
Byte Write.
In the Byte Write mode the master
sends one data byte, which is acknowledged by the
memory. The master then terminates the transfer
by generating a STOP condition. The Write mode
is independant of the state of the MODE pin which
could be left floating if only this mode was to be
used. However it is not a recommended operating
mode, as this pin has to be connected to either V
IH
or V
IL
, to minimize the stand-by current.
Multibyte Write (ST24/25C16 only).
For the Mul-
tibyte Write mode, the MODE pin must be at V
IH
.
The Multibyte Write mode can be started from any
address in the memory. The master sends from one
up to 8 bytes of data, which are each acknowledged
by the memory. The transfer is terminated by the
master generating a STOP condition. The duration
of the write cycle is t
W
= 10ms maximum except
when bytes are accessed on 2 contiguous rows
(one row is 16 bytes), the programming time is then
doubled to a maximum of 20ms. Writing more than
8 bytes in the Multibyte Write mode may modify
data bytes in an adjacent row (one row is 16 bytes
long). However, the Multibyte Write can properly
write up to 16 consecutive bytes only if the first
address of these 16 bytes is the first address of the
row, the 15 following bytes being written in the 15
following bytes of this same row.
AI00870B
7FFh
b7
b4
b2
X
X
700h
Block 7
Protect Flag
Enable = 0
Disable = 1
16 byte
boundary
address
Protect Location
600h
500h
400h
1
0
Block
Select
PB1
PB0
Block 6
Block 5
Block 4
1
0
0
0
1
1
1
0
PB1 PB0
Figure 7. Memory Protection
9/17
ST24/25C16, ST24/25W16
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST24W16M3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
| ST24W16M3TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:16 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection |
| ST24W16M5TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:16 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection |
| ST24W16M6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
| ST24W16M6TR | 功能描述:電可擦除可編程只讀存儲器 5.5V 16K (2Kx8) RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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