参数资料
| 型号： | AT25020AY1-10YU-1.8 |
| 厂商： | Atmel |
| 文件页数： | 8/22页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2KBIT 20MHZ 8MAP |
| 标准包装： | 120 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 x 8) |
| 速度： | 5MHz，10MHz，20MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-UDFN 裸露焊盘 |
| 供应商设备封装： | 8-MAP（3x4.9） |
| 包装： | 管件 |
| 产品目录页面： | 1456 (CN2011-ZH PDF) |
| 其它名称： | AT25020AY110YU1.8 |
Functional
Description
The AT25010A/020A/040A is designed to interface directly with the synchronous serial
peripheral interface (SPI) of the 6805 and 68HC11 series of microcontrollers.
The AT25010A/020A/040A utilizes an 8-bit instruction register. The list of instructions
and their operation codes are contained in Figure 5. All instructions, addresses, and
data are transferred with the MSB first and start with a high-to-low CS transition.
Table 5. Instruction Set for the AT25010A/020A/040A
Instruction Name
WREN
WRDI
RDSR
WRSR
READ
WRITE
Instruction Format
0000 X110
0000 X100
0000 X101
0000 X001
0000 A011
0000 A010
Operation
Set Write Enable Latch
Reset Write Enable Latch
Read Status Register
Write Status Register
Read Data from Memory Array
Write Data to Memory Array
Note:
“A” represents MSB address bit A8.
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. The WP pin must be held high during a WREN 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 read/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 6. Status Register Format
Bit 7
X
Bit 6
X
Bit 5
X
Bit 4
X
Bit 3
BP1
Bit 2
BP0
Bit 1
WEN
Bit 0
RDY
Table 7. Read Status Register Bit Definition
Bit
Bit 0 (RDY)
Bit 1 (WEN)
Bit 2 (BP0)
Bit 3 (BP1)
Definition
Bit 0 = “0” (RDY) indicates the device is ready. Bit 0 = “1”
indicates the write cycle is in progress.
Bit 1 = “0” indicates the device is not write enabled. Bit 1 = “1”
indicates the device is write enabled.
See Table 8.
See Table 8.
Bits 4–7 are “0”s when device is not in an internal write cycle.
Bits 0–7 are “1”s during an internal write cycle.
WRITE STATUS REGISTER (WRSR): The WRSR instruction allows the user to select
one of four levels of protection. The AT25010A/020A/040A is divided into four array seg-
ments. One-quarter, one-half, or all of the memory segments can be protected. Any of
8
AT25010A/020A/040A
3348J–SEEPR–8/06
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| AT25020AY6-10YH-1.8 | 功能描述:电可擦除可编程只读存储器 PB/HALO FREE, 1.8V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| AT25020B | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:f serial electrically erasable able programmable read-only memory |
| AT25020B-MAHL-T | 功能描述:电可擦除可编程只读存储器 2K (256 X 8) SPI, 1.8V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| AT25020B-SSHL-B | 功能描述:电可擦除可编程只读存储器 2K (256 X 8) SPI, 1.8V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| AT25020B-SSHL-T | 功能描述:电可擦除可编程只读存储器 2K (256 X 8) SPI, 1.8V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
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