收藏本站
CAT25512
Pin Description
SI: The serial data input pin accepts op ? codes, addresses
and data. In SPI modes (0,0) and (1,1) input data is latched
on the rising edge of the SCK clock input.
SO: The serial data output pin is used to transfer data out of
the device. In SPI modes (0,0) and (1,1) data is shifted out
on the falling edge of the SCK clock.
SCK: The serial clock input pin accepts the clock provided
by the host and used for synchronizing communication
between host and CAT25512.
CS: The chip select input pin is used to enable/disable the
CAT25512. When CS is high, the SO output is tri ? stated (high
impedance) and the device is in Standby Mode (unless an
internal write operation is in progress). Every communication
session between host and CAT25512 must be preceded by a
high to low transition and concluded with a low to high
transition of the CS input.
WP: The write protect input pin will allow all write
operations to the device when held high. When WP pin is
tied low and the WPEN bit in the Status Register (refer to
Functional Description
The CAT25512 device supports the Serial Peripheral
Interface (SPI) bus protocol, modes (0,0) and (1,1). The
device contains an 8 ? bit instruction register. The instruction
set and associated op ? codes are listed in Table 7.
Reading data stored in the CAT25512 is accomplished by
simply providing the READ command and an address.
Writing to the CAT25512, in addition to a WRITE
command, address and data, also requires enabling the
device for writing by first setting certain bits in a Status
Register, as will be explained later.
After a high to low transition on the CS input pin, the
CAT25512 will accept any one of the six instruction
op ? codes listed in Table 7 and will ignore all other possible
8 ? bit combinations. The communication protocol follows
the timing from Figure 2.
The CAT25512 features an additional Identification Page
(128 bytes) which can be accessed for Read and Write
operations when the IPL bit from the Status Register is set
to “1”. The user can also choose to make the Identification
Page permanent write protected.
Status Register description, later in this Data Sheet) is set to
“1”, writing to the Status Register is disabled.
HOLD: The HOLD input pin is used to pause transmission
between host and CAT25512, without having to retransmit
the entire sequence at a later time. To pause, HOLD must be
Table 7. INSTRUCTION SET
Instruction Opcode
WREN 0000 0110
WRDI 0000 0100
Operation
Enable Write Operations
Disable Write Operations
taken low and to resume it must be taken back high, with the
SCK input low during both transitions. When not used for
pausing, it is recommended the HOLD input to be tied to
V CC , either directly or through a resistor.
RDSR
WRSR
READ
WRITE
0000 0101
0000 0001
0000 0011
0000 0010
Read Status Register
Write Status Register
Read Data from Memory
Write Data to Memory
t CS
CS
t CNH
t CSS
t WH
t WL
t CSH
t CNS
SCK
SI
t SU
t H
VALID
IN
t RI
t FI
t V
t HO
t V
t DIS
SO
HI ? Z
VALID
OUT
HI ? Z
Figure 2. Synchronous Data Timing
http://onsemi.com
4
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
CAT25640HU4I-GT3 IC EEPROM SRL 64KB I2C 8UDFN
CAT25640LI-G IC EEPROM 64KBIT 10MHZ 8DIP
CAT28C16AXI-90T IC EEPROM 16KB PARALLEL 24SOIC
CAT28C256G-15T IC EEPROM 256KB PARALLEL 32PLCC
CAT28C512GI-15T IC EEPROM 512KB PARALLEL 32PLCC
CAT28F001LI-12T IC FLASH MEM 1MBIT 120NS 32PDIP
CAT28F020G-90T IC FLASH 2MBIT 90NS 32PLCC
CAT28F512L90 IC FLASH MEM 512KB 90NS 32PDIP
相关代理商/技术参数
CAT25-512JA 功能描述:电阻器网络与阵列 5.1K 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
CAT25-512JALF 功能描述:电阻器网络与阵列 5.1K 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
CAT25512VI-GT3 功能描述:电可擦除可编程只读存储器 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
CAT25512YI-GT3 功能描述:电可擦除可编程只读存储器 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
CAT25-513JA 功能描述:电阻器网络与阵列 51K 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
CAT25-513JALF 功能描述:电阻器网络与阵列 51K 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
CAT25-560JA 功能描述:电阻器网络与阵列 56ohm 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
CAT25-560JALF 功能描述:电阻器网络与阵列 56ohm 5% Concave 8resistors RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel