- 您现在的位置：买卖IC网 > PDF目录4393 > 25LC160C-I/MS (Microchip Technology)IC SRL EEPROM 2KX8 2.5V 8-MSOP PDF资料下载
参数资料
| 型号： | 25LC160C-I/MS |
| 厂商： | Microchip Technology |
| 文件页数： | 6/30页 |
| 文件大小： | 0K |
| 描述： | IC SRL EEPROM 2KX8 2.5V 8-MSOP |
| 标准包装： | 100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 16K (2K x 8) |
| 速度： | 3MHZ，5MHZ，10MHZ |
| 接口： | SPI 3 线串行 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 1449 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页当前第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
25XX160C/D
2.0
FUNCTIONAL DESCRIPTION
2.3
Write Sequence
2.1
Principles of Operation
Prior to any attempt to write data to the 25XX160C/D,
the write enable latch must be set by issuing the WREN
The 25XX160C/D are 2048 byte Serial EEPROMs
designed to interface directly with the Serial Peripheral
Interface (SPI) port of many of today’s popular
microcontroller families, including Microchip’s PIC ?
microcontrollers. It may also interface with microcon-
trollers that do not have a built-in SPI port by using dis-
crete I/O lines programmed properly with the software.
The 25XX160C/D contains an 8-bit instruction register.
The device is accessed via the SI pin, with data being
clocked in on the rising edge of SCK. The CS pin must
be low and the HOLD pin must be high for the entire
operation.
Table 2-1 contains a list of the possible instruction
bytes and format for device operation. All instructions,
addresses, and data are transferred MSB first, LSB
last.
instruction (Figure 2-4). This is done by setting CS low
and then clocking out the proper instruction into the
25XX160C/D. After all eight bits of the instruction are
transmitted, the CS must be brought high to set the
write enable latch. If the write operation is initiated
immediately after the WREN instruction without CS
being brought high, the data will not be written to the
array because the write enable latch will not have been
properly set.
Once the write enable latch is set, the user may
proceed by setting the CS low, issuing a WRITE
instruction, followed by the 16-bit address, with the five
MSBs of the address being "don’t care" bits, and then
the data to be written. Up to 16 bytes (25XX160C) or 32
bytes (25XX160D) of data can be sent to the device
before a write cycle is necessary. The only restriction is
that all of the bytes must reside in the same page.
Data (SI) is sampled on the first rising edge of SCK
after CS goes low. If the clock line is shared with other
peripheral devices on the SPI bus, the user can assert
the HOLD input and place the 25XX160C/D in ‘HOLD’
mode. After releasing the HOLD pin, operation will
resume from the point when the HOLD was asserted.
Note:
Page write operations are limited to writing
bytes within a single physical page,
regardless of the number of bytes
actually being written. Physical page
boundaries start at addresses that are
integer multiples of the page buffer size (or
2.2
Read Sequence
‘page size’) and, end at addresses that are
integer multiples of page size – 1. If a
The device is selected by pulling CS low. The 8-bit
READ instruction is transmitted to the 25XX160C/D fol-
lowed by the 16-bit address, with the five MSBs of the
address being "don’t care" bits. After the correct READ
instruction and address are sent, the data stored in the
memory at the selected address is shifted out on the
SO pin. The data stored in the memory at the next
address can be read sequentially by continuing to
provide clock pulses. The internal Address Pointer is
automatically incremented to the next higher address
after each byte of data is shifted out. When the highest
address is reached (07FFh), the address counter rolls
over to address 0000h allowing the read cycle to be
continued indefinitely. The read operation is terminated
by raising the CS pin (Figure 2-1).
DS22150A-page 6
Page Write command attempts to write
across a physical page boundary, the
result is that the data wraps around to the
beginning of the current page (overwriting
data previously stored there), instead of
being written to the next page as might be
expected. It is therefore necessary for the
application software to prevent page write
operations that would attempt to cross a
page boundary.
For the data to be actually written to the array, the CS
must be brought high after the Least Significant bit (D0)
of the n th data byte has been clocked in. If CS is
brought high at any other time, the write operation will
not be completed. Refer to Figure 2-2 and Figure 2-3
for more detailed illustrations on the byte write
sequence and the page write sequence, respectively.
While the write is in progress, the STATUS register may
be read to check the status of the WPEN, WIP, WEL,
BP1 and BP0 bits (Figure 2-6). A read attempt of a
memory array location will not be possible during a
write cycle. When the write cycle is completed, the
write enable latch is reset.
? 2009 Microchip Technology Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| 25LC160A-I/MS | IC EEPROM 16KBIT 10MHZ 8MSOP |
| 25LC160B-I/ST | IC EEPROM 16KBIT 10MHZ 8TSSOP |
| 25LC160D-I/ST | IC SRL EEPROM 2KX8 2.5V 8-TSSOP |
| 25AA160C-I/MS | IC SRL EEPROM 2KX8 1.8V 8-MSOP |
| 25LC160B-I/P | IC EEPROM 16KBIT 10MHZ 8DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 25LC160CT-E/MNY | 功能描述:电可擦除可编程只读存储器 16K 2K X 8 16B PAGE 2.5V SER EE EXT 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 |
| 25LC160CT-E/MS | 功能描述:电可擦除可编程只读存储器 16K 2K X 8 16B PAGE 2.5V SER EE EXT 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 |
| 25LC160CT-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16K SPI Bus Serial EEPROM |
| 25LC160CT-E/SN | 功能描述:电可擦除可编程只读存储器 16K 2K X 8 16B PAGE 2.5V SER EE EXT 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 |
| 25LC160CT-E/ST | 功能描述:电可擦除可编程只读存储器 16K 2K X 8 16B PAGE 2.5V SER EE EXT 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 |
发布紧急采购，3分钟左右您将得到回复。