- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381414 > AT25020A-10PQ-2.7 (ATMEL CORP) SPI Serial Extended TEMPERATURE EEPROMS 1K 2K 4K PDF資料下載
參數(shù)資料
| 型號(hào)： | AT25020A-10PQ-2.7 |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | SPI Serial Extended TEMPERATURE EEPROMS 1K 2K 4K |
| 中文描述： | 256 X 8 SPI BUS SERIAL EEPROM, PDIP8 |
| 封裝： | 0.300 INCH, LEAD AND HALOGEN FREE, PLASTIC, MS-001BA, DIP-8 |
| 文件頁(yè)數(shù)： | 8/18頁(yè) |
| 文件大?。?/td> | 392K |
| 代理商： | AT25020A-10PQ-2.7 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)當(dāng)前第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
8
AT25010A/020A/040A
5087B–SEEPR–1/05
the data within any selected segment will therefore be read only. The block write protec-
tion levels and corresponding status register control bits are shown in Table 8.
Bits BP0 and BP1 are nonvolatile cells that have the same properties and functions as
the regular memory cells (e.g., WREN, t
WC
, RDSR).
Table 8.
Block Write Protect Bits
READ SEQUENCE (READ):
Reading the AT25010A/020A/040A via the serial output
(SO) pin requires the following sequence. After the CS line is pulled low to select a
device, the read op-code (including A8) is transmitted via the SI line followed by the byte
address to be read (A7–A0). Upon completion, any data on the SI line will be ignored.
The data (D7
D0) at the specified address is then shifted out onto the SO line. If only
one byte is to be read, the CS line should be driven high after the data comes out. The
read sequence can be continued since the byte address is automatically incremented
and data will continue to be shifted out. When the highest address is reached, the
address counter will roll over to the lowest address, allowing the entire memory to be
read in one continuous read cycle.
WRITE SEQUENCE (WRITE):
In order to program the AT25010A/020A/040A, the Write
Protect (WP) pin must be held high and two separate instructions must be executed.
First, the device must be write enabled via the WREN instruction. Then a write (WRITE)
instruction may be executed. Also, the address of the memory location(s) to be pro-
grammed must be outside the protected address field location selected by the block
write protection level. During an internal write cycle, all commands will be ignored
except the RDSR instruction.
A write instruction requires the following sequence. After the CS line is pulled low to
select the device, the WRITE op-code (including A8) is transmitted via the SI line fol-
lowed by the byte address (A7
A0) and the data (D7–D0) to be programmed.
Programming will start after the CS pin is brought high. The low-to-high transition of the
CS pin must occur during the SCK low-time immediately after clocking in the D0 (LSB)
data bit.
The READY/BUSY status of the device can be determined by initiating a read status
register (RDSR) instruction. If Bit 0 = “1”, the write cycle is still in progress. If Bit 0 = “0”,
the write cycle has ended. Only the RDSR instruction is enabled during the write pro-
gramming cycle.
The AT25010A/020A/040A is capable of an 8-byte page write operation. After each byte
of data is received, the three low-order address bits are internally incremented by one;
the six high-order bits of the address will remain constant. If more than eight bytes of
data are transmitted, the address counter will roll over and the previously written data
will be overwritten. The AT25010A/020A/040A is automatically returned to the write dis-
able state at the completion of a write cycle.
NOTE:
If the WP pin is brought low or if the device is not write enabled (WREN), the
device will ignore the Write instruction and will return to the standby state when CS is
brought high. A new CS falling edge is required to reinitiate the serial communication.
Level
Status Register Bits
Array Addresses Protected
BP1
BP0
AT25010A
AT25020A
AT25040A
0
0
0
None
None
None
1 (1/4)
0
1
60-7F
C0-FF
180-1FF
2 (1/2)
1
0
40-7F
80-FF
100-1FF
3
(All)
1
1
00-7F
00-FF
000-1FF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT25040A-10PQ-2.7 | SPI Serial Extended TEMPERATURE EEPROMS 1K 2K 4K |
| AT25010A-10TQ-2.7 | 128 x 64 pixel format, LED Backlight available |
| AT25020A-10TQ-2.7 | 128 x 64 pixel format, LED Backlight available |
| AT25040A-10TQ-2.7 | 128 x 64 pixel format, LED Backlight available |
| AT25010 | 1K SPI Serial EEPROM(1K SPI串行EEPROM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT25020A-10PU-1.8 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 NIPDAU AUTO 2.7V - 10MS 1.8V RoHS:否 制造商:Atmel 存儲(chǔ)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 |
| AT25020A-10PU-2.7 | 功能描述:電可擦除可編程只讀存儲(chǔ)器 NIPDAU AUTO 2.7V - 10MS 2.7V RoHS:否 制造商:Atmel 存儲(chǔ)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 |
| AT25020A-10TI-1.8 | 功能描述:IC EEPROM 2KBIT 20MHZ 8TSSOP RoHS:否 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 格式 - 存儲(chǔ)器:閃存 存儲(chǔ)器類型:FLASH 存儲(chǔ)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 |
| AT25020A-10TI-2.7 | 功能描述:IC EEPROM 2KBIT 20MHZ 8TSSOP RoHS:否 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 格式 - 存儲(chǔ)器:閃存 存儲(chǔ)器類型:FLASH 存儲(chǔ)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 |
| AT25020A-10TI-2.7 SL383 | 制造商:Atmel Corporation 功能描述:EEPROM Serial-SPI 2K-bit 256 x 8 3.3V/5V 8-Pin TSSOP T/R |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。