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參數(shù)資料
| 型號： | ST24LW21M6 |
| 英文描述： | Cyclone II FPGA 15K FBGA-256 |
| 中文描述： | I2C串行EEPROM的 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 152K |
| 代理商： | ST24LW21M6 |
Page Write.
The Page Write mode allows up to 8
bytes to be written in a single write cycle, provided
that they are all located in the same ’row’ in the
memory: that is the most significant memory ad-
dress bits are the same. The master sends from
one up to 8 bytes of data, which are each acknow-
ledged by the memory.
After each byte is transfered, the internal byte
address counter (3 least significant bits only) is
incremented. The transfer is terminated by the
master generating a STOP condition. Care must be
taken to avoid address counter ’roll-over’ which
could result in data being overwritten. Note that, for
any write mode, the generation by the master of the
STOP condition starts the internal memory pro-
gram cycle. All inputs are disabled until the comple-
tion of this cycle and the memory will not respond
to any request.
Minimizing System Delays by Polling On ACK
.
During the internal write cycle, the memory discon-
nects itself from the bus in order to copy the data
from the internal latches to the memory cells. The
maximum value of the write time (t
W
) is given in the
AC Characteristics table, since the typical time is
shorter, the time seen by the system may be re-
duced by an ACK polling sequence issued by the
master. The sequence is as follows:
– Initial condition: a Write is in progress (see Fig-
ure 10).
– Step 1: the Master issues a START condition
followed by a Device Select byte (1st byte of
the new instruction).
S
S
BYTE WRITE
DEV SEL
BYTE ADDR
DATA IN
S
PAGE WRITE
DEV SEL
BYTE ADDR
DATA IN 1
DATA IN 2
AI01893
S
DATA IN N
ACK
ACK
ACK
R/W
ACK
ACK
ACK
R/W
ACK
ACK
VCLK/WC
VCLK/WC
Figure 11. Write Modes Sequence
14/21
ST24LC21B, ST24LW21, ST24FC21, ST24FW21
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PDF描述 |
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| ST24F | IC CONFIG DEVICE 16MBIT 100-PQFP |
| ST24FC21B1 | MAX II CPLD 570 LE 144-TQFP |
| ST24FC21B6 | IC FLEX 6000 FPGA 16K 208-PQFP |
| ST24FC21M1 | FPGA, FLEX 10K, 10K GATES, TQFP144; Logic IC family:FPGA; Logic IC Base Number:10; Logic IC function:EPF10K10; Voltage, supply:5.0V; Case style:TQFP; Gates, No. of:10000; I/O lines, No. of:102; Pins, No. of:144; Temp, op. RoHS Compliant: Yes |
| ST24FC21M6 | IC ACEX 1K FPGA 100K 208-PQFP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ST24LW21M6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY |
| ST24T1M5ZBE | 功能描述:SWITCH TOGGLE MINI UNSELD RoHS:是 類別:開關 >> 撥動開關 系列:ST 標準包裝:1 系列:A 電路:雙刀雙擲 開關功能:開-開-開 觸點額定電壓:6A @ 125VAC 觸動器類型:扁平型 觸動器長度:11.38mm 發(fā)光:不發(fā)光 安裝類型:面板安裝 端接類型:焊片 軸襯螺紋:1/4-40 包裝:散裝 |
| ST24T3H 032397 | 制造商:Comair Rotron 功能描述:FAN 80MM 24VDC |
| ST24T3H | 制造商:Comair Rotron 功能描述:FAN 80MM 24VDC |
| ST24W01 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SERIAL 1K 128 x 8 EEPROM |
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