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參數(shù)資料
| 型號： | FM24C256 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | DRAM |
| 英文描述： | 256K-Bit 2-Wire Bus Interface Serial EEPROM with Write Protect(帶寫保護的256K位的兩線控制總線接口串行EEPROM) |
| 中文描述： | 256K位2線總線接口的串行EEPROM的寫入保護（帶寫保護的256K位的兩線控制總線接口串行EEPROM的） |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 89K |
| 代理商： | FM24C256 |
7
www.fairchildsemi.com
FM24C256 rev. B.3
F
Write Cycle Timing
ACKNOWLEDGE
ACK (acknowledge) is a software convention used to indicate
successful data transfers. The transmitting device, either master or
slave, will release the bus after transmitting eight bits. During the ninth
clock cycle the receiver will pull the SDA line LOW to acknowledge
that it received the eight bits of data. Refer to Figure 3
The FM24C256xxx device will always respond with an acknowl-
edge after recognition of a start condition and its slave address. If
Write Cycle Timing:
SDA
SCL
STOP
CONDITION
START
CONDITION
WORD n
8th BIT
ACK
tWR
SDA
SCL
DATA STABLE
DATA
CHANGE
SDA
SCL
START CONDITION
STOP CONDITION
DS800023-4
DS800023-5
Data Validity (Figure 1)
Definition of Start and Stop (Figure 2)
DS800023-6
both the device and a WRITE operation have been selected, the
FM24C256xxx will respond with an acknowledge after the receipt
of each subsequent eight bit word.
In the READ mode the FM24C256xxx slave will transmit eight bits
of data, release the SDA line and monitor the line for an acknowl-
edge. If an acknowledge is detected and no stop condition is
generated by the master, the slave will continue to transmit data.
If an acknowledge is not detected, the slave will terminate further
data transmissions and await the stop condition to return to the
standby power mode.
SCL FROM
MASTER
Data Output
from Transmitter
Data Output
from Receiver
START
ACKNOWLEDGE
1
8
9
Acknowledge Response from Receiver (Figure 3)
DS800023-7
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| FM24C256FYYX | Shielded Paired Cable, EIA RS-232 and EIA RS-422; Number of Conductors:12; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyvinylchloride (PVC); Shielding Material:Aluminum Foil/Polyester Tape RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FM24C256_05 | 制造商:RAMTRON 制造商全稱:RAMTRON 功能描述:256Kb FRAM Serial Memory |
| FM24C256B-G | 功能描述:F-RAM 256Kb Serial I2C 5V FRAM RoHS:否 存儲容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM24C256B-GTR | 功能描述:F-RAM 256Kb Serial I2C 5V FRAM RoHS:否 存儲容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM24C256EM8 | 功能描述:電可擦除可編程只讀存儲器 SOIC-8 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| FM24C256EM8X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
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