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| 型號： | AT24C02AN-10SQ-2.7 |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 256 X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8 |
| 封裝： | 0.150 INCH, LEAD FREE AND HALOGEN FREE, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大?。?/td> | 523K |
| 代理商： | AT24C02AN-10SQ-2.7 |
11
AT24C02A/04A/08A/16A
5083A–SEEPR–9/04
Read Operations
Read operations are initiated the same way as write operations with the exception that
the read/write select bit in the device address word is set to “1”. There are three read
operations: current address read, random address read and sequential read.
CURRENT ADDRESS READ:
The internal data word address counter maintains the
last address accessed during the last read or write operation, incremented by one. This
address stays valid between operations as long as the chip power is maintained. The
address “roll over” during read is from the last byte of the last memory page to the first
byte of the first page. The address “roll over” during write is from the last byte of the cur-
rent page to the first byte of the same page.
Once the device address with the read/write select bit set to “1” is clocked in and
acknowledged by the EEPROM, the current address data word is serially clocked out.
The microcontroller does not respond with an input “0” but does generate a following
stop condition, as shown in Figure 10.
Figure 10.
Current Address Read
RANDOM READ:
A random read requires a “dummy” byte write sequence to load in the
data word address. Once the device address word and data word address are clocked
in and acknowledged by the EEPROM, the microcontroller must generate another start
condition. The microcontroller now initiates a current address read by sending a device
address with the read/write select bit high. The EEPROM acknowledges the device
address and serially clocks out the data word. The microcontroller does not respond
with a “0” but does generate a following stop condition, as shown in Figure 11.
Figure 11.
Random Read
SEQUENTIAL READ:
Sequential reads are initiated by either a current address read or
a random address read. After the microcontroller receives a data word, it responds with
an acknowledge. As long as the EEPROM receives an acknowledge, it will continue to
increment the data word address and serially clock out sequential data words. When the
memory address limit is reached, the data word address will “roll over” and the sequen-
tial read will continue. The sequential read operation is terminated when the
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| AT24C04A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT24C02AN-10SU-1.8 | 制造商:Atmel Corporation 功能描述:EEPROM Serial-2Wire 2K-Bit 256 x 8 2.5V/3.3V/5V 8-Pin SOIC |
| AT24C02AN-10SU-1.8 SL383 | 功能描述:IC EEPROM 2KBIT 400KHZ 8SOIC RoHS:是 類別:集成電路 (IC) >> 存儲器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:16M（2M x 8，1M x 16） 速度:70ns 接口:并聯(lián) 電源電壓:2.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TFSOP（0.724"，18.40mm 寬） 供應(yīng)商設(shè)備封裝:48-TSOP 包裝:托盤 |
| AT24C02AN-10SU-1.8-T | 功能描述:IC EEPROM 2KBIT 400KHZ 8SOIC 制造商:microchip technology 系列:- 包裝:帶卷（TR） 零件狀態(tài):停產(chǎn) 存儲器類型:非易失 存儲器格式:EEPROM 技術(shù):EEPROM 存儲容量:2Kb （256 x 8） 時鐘頻率:400kHz 寫周期時間 - 字，頁:5ms 訪問時間:900ns 存儲器接口:I2C 電壓 - 電源:1.8 V ~ 5.5 V 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 基本零件編號:AT24C02 標(biāo)準(zhǔn)包裝:4,000 |
| AT24C02AN-10SU-2.7 | 功能描述:電可擦除可編程只讀存儲器 2/4/8/16K 2-WIRE BUS 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| AT24C02AY1-10YI-1.8 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
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