参数资料
| 型号： | CAT25640YI-GT3JN |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/19页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM SRL 64KB I2C 8TSSOP |
| 标准包装： | 3,000 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 64K (8K x 8) |
| 速度： | 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-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
CAT25640
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 CAT25640.
CS: The chip select input pin is used to enable/disable the
CAT25640. 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 CAT25640 must be preceded by a
Functional Description
The CAT25640 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 9.
Reading data stored in the CAT25640 is accomplished by
simply providing the READ command and an address.
Writing to the CAT25640, 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
CAT25640 will accept any one of the six instruction
op ? codes listed in Table 9 and will ignore all other possible
8 ? bit combinations. The communication protocol follows
the timing from Figure 2.
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
Table 9. INSTRUCTION SET
Instruction Op ? code
WREN 0000 0110
Operation
Enable Write Operations
tied low and the WPEN bit in the Status Register (refer to
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 CAT25640, without having to retransmit
the entire sequence at a later time. To pause, HOLD must be
WRDI
RDSR
WRSR
READ
WRITE
0000 0100
0000 0101
0000 0001
0000 0011
0000 0010
Disable Write Operations
Read Status Register
Write Status Register
Read Data from Memory
Write Data to Memory
taken low and to resume it must be taken back high, with the
SCK input low during both transitions. When not used for
pausing, the HOLD input should be tied to V CC , either
directly or through a resistor.
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
6
相关PDF资料 |
PDF描述 |
|---|---|
| P1011PSE2HFB | IC MPU 800MHZ 689TEPBGAII |
| XF2L-0535-1A | CONN FPC 5POS 0.5MM PITCH SMD |
| MPC8572ECLPXAULD | MPU POWERQUICC III 1023FCPBGA |
| MPC8572CLVTAVND | MPU POWERQUICC III 1023FCPBGA |
| MPC8540PX533JB | MPU POWERQUICC 533MHZ 783FCPBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT25-680JA | 功能描述:电阻器网络与阵列 68ohm 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 |
| CAT25-680JALF | 功能描述:电阻器网络与阵列 68ohm 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 |
| CAT25-681JA | 功能描述:电阻器网络与阵列 680ohm 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 |
| CAT25-681JALF | 功能描述:电阻器网络与阵列 680ohm 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 |
| CAT25-682JA | 功能描述:电阻器网络与阵列 6.8K 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 |
发布紧急采购，3分钟左右您将得到回复。