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參數資料
| 型號： | 24C02CTEST |
| 英文描述： | Soft Microcontroller Module |
| 中文描述： | I2C串行EEPROM的 |
| 文件頁數： | 6/12頁 |
| 文件大?。?/td> | 174K |
| 代理商： | 24C02CTEST |
24C02C
DS21202C-page 6
1999 Microchip Technology Inc.
5.0
DEVICE ADDRESSING
A control byte is the first byte received following the
start condition from the master device (Figure 5-1). The
control byte consists of a four bit control code; for the
24C02C this is set as 1010 binary for read and write
operations. The next three bits of the control byte are
the chip select bits (A2, A1, A0). The chip select bits
allow the use of up to eight 24C02C devices on the
same bus and are used to select which device is
accessed. The chip select bits in the control byte must
correspond to the logic levels on the corresponding A2,
A1, and A0 pins for the device to respond. These bits
are in effect the three most significant bits of the word
address.
The last bit of the control byte defines the operation to
be performed. When set to a one a read operation is
selected, and when set to a zero a write operation is
selected. Following the start condition, the 24C02C
monitors the SDA bus checking the control byte being
transmitted. Upon receiving a 1010 code and appropri-
ate chip select bits, the slave device outputs an
acknowledge signal on the SDA line. Depending on the
state of the R/W bit, the 24C02C will select a read or
write operation.
FIGURE 5-1:
CONTROL BYTE FORMAT
5.1
Contiguous Addressing Across
Multiple Devices
The chip select bits A2, A1, A0 can be used to expand
the contiguous address space for up to 16K bits by add-
ing up to eight 24C02C devices on the same bus. In this
case, software can use A0 of the control byte as
address bit A8, A1 as address bit A9, and A2 as
address bit A10. It is not possible to write or read
across device boundaries.
1
0
1
0
A2
A1
A0
S
ACK
R/W
Control Code
Chip Select
Bits
Slave Address
Acknowledge Bit
Start Bit
Read/Write Bit
This Material Copyrighted by Its Respective Manufacturer
相關PDF資料 |
PDF描述 |
|---|---|
| 24C02CTISN | Soft Microcontroller Module |
| 24C02CTIST | Soft Microcontroller Module |
| 24C02CTSN | Soft Microcontroller Module |
| 24C02CTST | I2C Serial EEPROM |
| 24C02CW | I2C Serial EEPROM |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 24C02CTI/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K 5.0V I2C⑩ Serial EEPROM |
| 24C02CT-I/MC | 功能描述:電可擦除可編程只讀存儲器 2K 256X8 SER EE IND RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數據保留: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 |
| 24C02CT-I/MNY | 功能描述:電可擦除可編程只讀存儲器 2K 256X8 SERIAL EE IND RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數據保留: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 |
| 24C02CTI/MS | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K 5.0V I2C⑩ Serial EEPROM |
| 24C02CT-I/MS | 功能描述:電可擦除可編程只讀存儲器 256x8 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數據保留: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 |
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