參數(shù)資料
型號(hào): CAT5409WI-00-TE13
英文描述: RF/Coaxial Connector; RF Coax Type:C; Contact Termination:Clamp/Solder; Body Style:Straight Plug; RG Cable Type:8, 9, 87A, 214, 313, 225; Approval Categories:UG-573A RoHS Compliant: Yes
中文描述: 四數(shù)字可編程電位計(jì)(DPPTM)與64個(gè)龍頭和2線接口
文件頁(yè)數(shù): 7/17頁(yè)
文件大?。?/td> 95K
代理商: CAT5409WI-00-TE13
7
CAT5409
Document No. 2010, Rev. I
WRITE OPERATIONS
In the Write mode, the Master device sends the START
condition and the slave address information to the Slave
device. After the Slave generates an acknowledge, the
Master sends the instruction byte that defines the
requested operation of CAT5409. The instruction byte
consist of a four-bit opcode followed by two register
selection bits and two pot selection bits. After receiving
another acknowledge from the Slave, the Master device
transmits the data to be written into the selected register.
The CAT5409 acknowledges once more and the Master
generates the STOP condition, at which time if a non-
volatile data register is being selected, the device begins
an internal programming cycle to non-volatile memory.
While this internal cycle is in progress, the device will not
respond to any request from the Master device.
Acknowledge Polling
The disabling of the inputs can be used to take advantage
of the typical write cycle time. Once the stop condition is
issued to indicate the end of the host's write operation,
the CAT5409 initiates the internal write cycle. ACK
polling can be initiated immediately. This involves issuing
the start condition followed by the slave address. If the
CAT5409 is still busy with the write operation, no ACK
will be returned. If the CAT5409 has completed the write
operation, an ACK will be returned and the host can then
proceed with the next instruction operation.
WRITE PROTECTION
The Write Protection feature allows the user to protect
against inadvertent programming of the non-volatile
data registers. If the
WP
pin is tied to LOW, the data
registers are protected and become read only. Similarly,
the
WP
pin going low after start but after start will
interrupt non-volatile write to data registers, while the
WP
pin going low after internal write cycle has started,
will have no effect on any write operation. The CAT5409
will accept both slave addresses and instructions, but
the data registers are protected from programming by
the device
s failure to send an acknowledge after data is
received.
Figure 6. Write Timing
Figure 5. Slave Address Bits
0
1
0
1
A3
A2
A1
A0
CAT5409
*
**
A0, A1, A2 and A3 correspond to pin A0, A1, A2 and A3 of the device.
A0, A1, A2 and A3 must compare to its corresponding hard wired input pins.
S
A
C
K
A
C
K
DR1 WCR DATA
S
T
O
P
P
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
A
C
K
SLAVE/DPP
ADDRESS
INSTRUCTION
BYTE
Fixed
Variable
op code
Data Register
Address
Pot/WCR
Address
相關(guān)PDF資料
PDF描述
CAT5409WI-10-TE13 RF/Coaxial Connector; RF Coax Type:C; Contact Termination:Clamp/Solder; Body Style:Straight Plug; RG Cable Type:8, 9, 87A, 213, 214, 225; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes RoHS Compliant: Yes
CAT5409WI-25-TE13 Quad Digitally Programmable Potentiometers (DPPTM) with 64 Taps and 2-wire Interface
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CAT5409YI-00-TE13 RF/Coaxial Connector; RF Coax Type:UHF; Contact Termination:Solder; Body Style:Straight Plug; RG Cable Type:8, 9, 87A, 213, 214, 225; Body Plating:Nickel RoHS Compliant: Yes
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CAT5409WI10 功能描述:數(shù)字電位計(jì) IC Ind Temp 10K Up/Dwn Quad 64-Tap 2-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
CAT5409WI-10 制造商:Catalyst Semiconductor 功能描述:
CAT5409WI-10-T1 功能描述:數(shù)字電位計(jì) IC DPP,NV,Quad 64 taps I2C RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
CAT5409WI-25 功能描述:數(shù)字電位計(jì) IC DPP NV Quad 64 taps I2C RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
CAT5409WI-25-T1 功能描述:數(shù)字電位計(jì) IC DPP NV Quad 64 taps I2C RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel