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參數(shù)資料
| 型號： | S-24C02B |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | 2Kbits CMOS 2-Wired Serial EEPROM(2K位CMOS 2線串行EEPROM) |
| 中文描述： | 2Kbits的CMOS 2 -有線串行EEPROM（2K位的CMOS 2線串行EEPROM的） |
| 文件頁數(shù)： | 12/53頁 |
| 文件大小： | 173K |
| 代理商： | S-24C02B |
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CMOS 2-WIRED SERIAL EEPROM
S-24C01B/02B/04B
Seiko Instruments Inc.
11
7. Read
7.1Current Address Read
The EEPROM is capable of storing the last accessed memory address during both writing and reading. The
memory address is stored as long as the power voltage is more than the retention voltage V
AH
.
Accordingly, when the master device recognizes the position of the address pointer inside the EEPROM,
data can be read from the memory address of the current address pointer without assigning a word address.
This is called “Current Address Read”.
“Current Address Read” is explained for when the address counter inside the EEPROM is an “n” address.
When the EEPROM receives a 7-bit length device address and a 1-bit read/write instruction code “1”,
following the start condition signal, it outputs the acknowledgment signal. However, in the S-24C04B, page
address P0 becomes invalid, and the memory address of the current address pointer becomes valid.
Next, 8-bit length data at an “n” address is output from the EEPROM, in synchronization with the SCL clock.
The address counter is incremented at the falling edge of the SCL clock by which the 8th bit of data is output,
and the address counter goes to address n+1.
The master device does not output the acknowledgment signal and transmits the stop condition signal to
finish reading.
For recognition of the address pointer inside the EEPROM, take into consideration the following:
The memory address counter inside the EEPROM is automatically incremented for every falling edge of the SCL
clock by which the 8th bit of data is output during the time of reading. During the time of writing, upper bits of the
memory address (upper 5 bits of the word address in the S-24C01B and S-24C02B; upper 4 bits of the word
address and page address P0 in the S-24C04B) are left unchanged and are not incremented.
Figure 12
Current Address Read
S
T
A
R
T
1 0
1
0
R
E
A
D
S
T
O
P
DEVICE
ADDRES
R
/
W
M
S
B
SDA LINE
ADR INC
x
x
P0
D7 D6 D5 D4 D3 D2 D1 D0
A
C
K
L
S
B
1
DATA
NO ACK from
Master Device
(P0 is ‘don’t care’ in the S-24C01B/02B)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S-24C04B | 4Kbits CMOS 2-Wired Serial EEPROM(4K位CMOS 2線串行EEPROM) |
| S-24C01B | 1Kbits CMOS 2-Wired Serial EEPROM(1K位CMOS 2線串行EEPROM) |
| S-24C08A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-24C16A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-24H30 | 64 Bits Non-Volatile CMOS RAM(64位CMOS非易失性RAM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-24C02BDP | 功能描述:電可擦除可編程只讀存儲器 2K (256X8) 2-Wire 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 |
| S-24C02BFJ-TB | 功能描述:電可擦除可編程只讀存儲器 2K (256X8) 2-Wire 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 |
| S-24C02BFJ-TB-G | 制造商:Seiko Instruments Inc (SII) 功能描述:S-24C02BFJ-TB-G - Tape and Reel |
| S-24C02BMFN-TB | 功能描述:電可擦除可編程只讀存儲器 2K (256X8) 2-Wire 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 |
| S-24C02BPN-TF-G | 制造商:Seiko Instruments Inc (SII) 功能描述:EEPROM, 2KB, 2 WIRE SON PKG - Tape and Reel |
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