參數(shù)資料
型號(hào)： AT25080AY1-10YI-2.7
廠商： ATMEL CORP
元件分類(lèi)： DRAM
英文描述： Circular Connector; No. of Contacts:5; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:22; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:22-13 RoHS Compliant: No
中文描述： 1K X 8 SPI BUS SERIAL EEPROM, DSO8
封裝： 4.90 X 3 MM, MAP-8
文件頁(yè)數(shù)： 7/20頁(yè)
文件大?。?/td> 388K
代理商： AT25080AY1-10YI-2.7
7
AT25080A/160A/320A/640A
5082B–SEEPR–1/05
Functional
Description
The AT25080A/160A/320A/640A is designed to interface directly with the synchronous
serial peripheral interface (SPI) of the 6805 and 68HC11 series of microcontrollers.
The AT25080A/160A/320A/640A utilizes an 8-bit instruction register. The list of instruc-
tions and their operation codes are contained in Table 5. All instructions, addresses, and
data are transferred with the MSB first and start with a high-to-low CS transition.
WRITE ENABLE (WREN):
The device will power up in the write disable state when V
CC
is applied. All programming instructions must therefore be preceded by a Write Enable
instruction.
WRITE DISABLE (WRDI):
To protect the device against inadvertent writes, the Write
Disable instruction disables all programming modes. The WRDI instruction is indepen-
dent of the status of the WP pin.
READ STATUS REGISTER (RDSR):
The Read Status Register instruction provides
access to the status register. The READY/BUSY and Write Enable status of the device
can be determined by the RDSR instruction. Similarly, the block write protection bits
indicate the extent of protection employed. These bits are set by using the WRSR
instruction.
Table 5.
Instruction Set for the AT25080A/160A/320A/640A
Instruction Name
Instruction Format
Operation
WREN
0000 X110
Set Write Enable Latch
WRDI
0000 X100
Reset Write Enable Latch
RDSR
0000 X101
Read Status Register
WRSR
0000 X001
Write Status Register
READ
0000 X011
Read Data from Memory Array
WRITE
0000 X010
Write Data to Memory Array
Table 6.
Status Register Format
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
WPEN
X
X
X
BP1
BP0
WEN
RDY
Table 7.
Read Status Register Bit Definition
Bit
Definition
Bit 0 (RDY)
Bit 0 = “0” (RDY) indicates the device is ready. Bit 0 = “1” indicates the write
cycle is in progress.
Bit 1 (WEN)
Bit 1= “0” indicates the device is not write-enabled. Bit 1 = “1” indicates the
device is write-enabled.
Bit 2 (BP0)
See Table 8 on page 8.
Bit 3 (BP1)
See Table 8 on page 8.
Bits 4
6 are “0”s when device is not in an internal write cycle.
Bit 7 (WPEN)
See Table 9 on page 8.
Bits 0
7 are “1”s during an internal write cycle.
相關(guān)PDF資料
PDF描述
AT25160AY1-10YI-2.7 Circular Connector; No. of Contacts:5; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:22; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:22-13 RoHS Compliant: No
AT25320AY1-10YI-2.7 Circular Connector; No. of Contacts:19; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:22; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:22-14 RoHS Compliant: No
AT25080A-10PQ-2.7 SPI Serial EEPROMs
AT25160A-10PQ-2.7 SPI Serial EEPROMs
AT25320A-10PQ-2.7 SPI Serial EEPROMs
相關(guān)代理商/技術(shù)參數(shù)
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AT25080AY6-10YH-1.8 SL383 制造商:Atmel Corporation 功能描述:
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