參數(shù)資料
型號(hào)： CAT5401BI-25-TE13
元件分類： 數(shù)字電位計(jì)
英文描述： Quad Digitally Programmable Potentiometers (DPP⑩) with 64 Taps and SPI Interface
中文描述： 四數(shù)字可編程電位計(jì)（民進(jìn)黨⑩）64絲錐和SPI接口
文件頁(yè)數(shù)： 8/18頁(yè)
文件大?。?/td> 104K
代理商： CAT5401BI-25-TE13
8
CAT5401
Document No. 2010, Rev. F
INSTRUCTION AND REGISTER
DESCRIPTION
DEVICE TYPE / ADDRESS BYTE
The first byte sent to the CAT5401 from the master/
processor is called the Device Address Byte. The most
significant four bits of the Device Type address are a
device type identifier. These bits for the CAT5401 are
fixed at 0101[B] (refer to Table 1).
The two least significant bits in the slave address byte,
A1 - A0, are the internal slave address and must match
the physical device address which is defined by the state
of the A1 - A0 input pins for the CAT5401 to successfully
continue the command sequence. Only the device which
slave address matches the incoming device address
sent by the master executes the instruction. The A1 - A0
inputs can be actively driven by CMOS input signals or
tied to V
CC
or V
SS
. The remaining two bits in the device
address byte must be set to 0.
INSTRUCTION BYTE
The next byte sent to the CAT5401 contains the instruction
and register pointer information. The four most significant
bits used provide the instruction opcode I [3:0]. The R1
and R0 bits point to one of the four data registers of each
associated potentiometer. The least two significant bits
point to one of four Wiper Control Registers. The format
is shown in Table 2.
Table 1. Identification Byte Format
ID3
0
(MSB)
ID2
1
ID1
0
ID0
1
0
0
A1
A0
(LSB)
Device Type
Identifier
Slave Address
Table 2. Instruction Byte Format
I3
I2
I1
I0
R1
R0
P1
P0
(MSB)
(LSB)
Instruction
Opcode
Data Register
Selection
WCR/Pot Selection
Data Register Selected
R1
R0
DR0
0
0
DR1
0
1
DR2
1
0
DR3
1
1
Data Register Selection
相關(guān)PDF資料
PDF描述
CAT5401BI-50-TE13 Quad Digitally Programmable Potentiometers (DPP⑩) with 64 Taps and SPI Interface
CAT5401UI-50-TE13 Quad Digitally Programmable Potentiometers (DPP⑩) with 64 Taps and SPI Interface
CAT5401WI-50-TE13 Quad Digitally Programmable Potentiometers (DPP⑩) with 64 Taps and SPI Interface
CAT5401YI-50-TE13 Quad Digitally Programmable Potentiometers (DPP⑩) with 64 Taps and SPI Interface
CAT5401BI-00-TE13 Quad Digitally Programmable Potentiometers (DPP⑩) with 64 Taps and SPI Interface
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