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參數(shù)資料
| 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)： | 9/20頁 |
| 文件大小： | 523K |
| 代理商： | AT24C02AN-10SQ-2.7 |
9
AT24C02A/04A/08A/16A
5083A–SEEPR–9/04
Device Addressing
The 2K, 4K, and 8K EEPROM devices all require an 8-bit device address word following
a start condition to enable the chip for a read or write operation, as shown in Figure 7.
Figure 7.
Device Address
The device address word consists of a mandatory “1”, “0” sequence for the first four
most significant bits as shown. This is common to all the EEPROM devices.
The next three bits are the A2, A1, and A0 device address bits for the 2K EEPROM.
These three bits must compare to their corresponding hardwired input pins.
The 4K EEPROM only uses the A2 and A1 device address bits with the third bit being a
memory page address bit. The two device address bits must compare to their corre-
sponding hardwired input pins. The A0 pin is no-connect.
The 8K EEPROM only uses the A2 device address bit with the next two bits being for
memory page addressing. The A2 bit must compare to its corresponding hardwired
input pin. The A1 and A0 pins are no-connect.
The 16K EEPROM does not use the device address pins, which limits the number of
devices on a single bus to one. The A0, A1, and A2 pins are no-connects.
The eighth bit of the device address is the read/write operation select bit. A read opera-
tion is initiated if this bit is high, and a write operation is initiated if this bit is low.
Upon a compare of the device address, the EEPROM will output a “0”. If a compare is
not made, the chip will return to a standby state.
Write Operations
BYTE WRITE:
A write operation requires an 8-bit data word address following the
device address word and acknowledgement. Upon receipt of this address, the EEPROM
will again respond with a “0” and then clock in the first 8-bit data word. Following receipt
of the 8-bit data word, the EEPROM will output a “0” and the addressing device, such as
a microcontroller, must terminate the write sequence with a stop condition. At this time,
the
EEPROM enters an internally-timed write cycle, t
WR
, to the nonvolatile memory. All
inputs are disabled during this write cycle, and the EEPROM will not respond until the
write is complete, as shown in Figure 8.
MSB
2K
LSB
1
A
2
A
0
A
1
R/W
4K
1
A
2
P0
A
1
R/W
0
0
0
0
0
0
1
1
1
8K
1
A
2
P0 R/W
0
0
1
16K
1
P2
P0 R/W
P1
P1
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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(shí)鐘頻率:400kHz 寫周期時(shí)間 - 字，頁:5ms 訪問時(shí)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(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 |
| 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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