X9409WV24Z-2.7 datasheet(9/19 Pages) INTERSIL

Part #	X9409WV24Z-2.7

Description	Low Noise/Low Power/2-Wire BusQuad Digitally Controlled Potentiometers (XDCP)

Download	19 Pages

Scroll/Zoom	100%

Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

Logo

9 / 19 page

X9409

9

FN8192.6

September 3, 2015

Submit Document Feedback

The next 4 bits of the slave address are the device address. The

physical device address is defined by the state of the A0 through

A3 inputs. The X9409 compares the serial data stream with the

address input state; a successful compare of all four address bits

is required for the X9409 to respond with an acknowledge. The

A0 through A3 inputs can be actively driven by CMOS input

signals or tied to VCC or VSS.

Acknowledge Polling

The disabling of the inputs, during the internal nonvolatile write

operation, can be used to take advantage of the typical

nonvolatile write cycle time. Once the stop condition is issued to

indicate the end of the nonvolatile write command the X9409

initiates the internal write cycle. ACK polling can be initiated

immediately. This involves issuing the start condition followed by

the device slave address. If the X9409 is still busy with the write

operation no ACK will be returned. If the X9409 has completed

the write operation an ACK will be returned and the master can

then proceed with the next operation.

Instruction Structure

The next byte sent to the X9409 contains the instruction and

register pointer information. The format is shown in Figure 6.

The four high order bits define the instruction. The next 2 bits (R1

and R0) select one of the four registers that is to be acted upon

when a register oriented instruction is issued. The last bits (P1,

P0) select, which one of the four potentiometers is to be affected

by the instruction.

Four of the nine instructions end with the transmission of the

instruction byte. The basic sequence is illustrated in Figure 7.

These two-byte instructions exchange data between the Wiper

Counter Register and one of the data registers. A transfer from a

Data Register to a Wiper Counter Register is essentially a write to

a static RAM.

The response of the wiper to this action will be delayed tWRL. A

transfer from the Wiper Counter Register (current wiper position),

to a Data Register is a write to nonvolatile memory and takes a

minimum of tWR to complete. The transfer can occur between

one of the four potentiometers and one of its associated

registers; or it may occur globally, wherein the transfer occurs

between all of the potentiometers and one of their associated

registers.

Four instructions require a three-byte sequence to complete.

These instructions transfer data between the host and the

X9409; either between the host and one of the data registers or

directly between the host and the Wiper Counter Register. These

instructions are: Read Wiper Counter Register (read the current

wiper position of the selected pot), Write Wiper Counter Register

(change current wiper position of the selected pot), Read Data

Register (read the contents of the selected nonvolatile register)

and Write Data Register (write a new value to the selected Data

Register). The sequence of operations is shown in Table 1.

The Increment/Decrement command is different from the other

commands. Once the command is issued and the X9409 has

responded with an acknowledge, the master can clock the

selected wiper up and/or down in one segment steps; thereby,

providing a fine tuning capability to the host. For each SCL clock

pulse (tHIGH) while SDA is HIGH, the selected wiper will move one

resistor segment towards the VH/RH terminal. Similarly, for each

SCL clock pulse while SDA is LOW, the selected wiper will move

one resistor segment towards the VL/RL terminal. A detailed

illustration of the sequence and timing for this operation are

shown in Figures 9 and 10 respectively.

FIGURE 5. ACK POLLING SEQUENCE

NONVOLATILE WRITE

COMMAND COMPLETED

ENTER ACK POLLING

ISSUE

START

ISSUE SLAVE

ADDRESS

ACK

RETURNED?

FURTHER

OPERATION?

ISSUE

INSTRUCTION

ISSUE STOP

NO

YES

PROCEED

ISSUE STOP

NO

PROCEED

FIGURE 6. INSTRUCTION BYTE FORMAT

I1

I2

I3

I0

R1

R0

P1

P0

POT SELECT

REGISTER

SELECT

INSTRUCTIONS

Similar Part No. - X9409WV24Z-2.7

Manufacturer	Part #	Datasheet	Description
Intersil Corporation	X9409WV24Z-2.7	357Kb / 20P	Low Noise/Low Power/2-Wire Bus
Intersil Corporation	X9409WV24Z-2.7	356Kb / 20P	Quad Digitally Controlled Potentiometers
Renesas Technology Corp	X9409WV24Z-2.7	788Kb / 19P	Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled Potentiometers (XDCP)

More results

Similar Description - X9409WV24Z-2.7

Manufacturer	Part #	Datasheet	Description
Renesas Technology Corp	X9409	788Kb / 19P	Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled Potentiometers (XDCP)
	X9418	827Kb / 20P	Low Noise/Low Power/2-Wire Bus Dual Digitally Controlled Potentiometers (XDCP??
	X9408	814Kb / 20P	Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled (XDCP?? Potentiometers
	ISL90841	1Mb / 12P	Quad Digitally Controlled Potentiometers (XDCP?? Low Noise, Low Power I2C
	X9400	819Kb / 20P	Low Noise/Low Power/SPI Bus Quad Digitally Controlled Potentiometers (XDCP??
	X9429	835Kb / 21P	Low Noise/Low Power/2-Wire Bus Single Digitally Controlled Potentiometer (XDCP??
	ISL22346	954Kb / 16P	Quad Digitally Controlled Potentiometers (XDCP?? Low Noise, Low Power I2C??Bus, 128 Taps
	ISL22326	972Kb / 17P	Dual Digitally Controlled Potentiometers (XDCP?? Low Noise, Low Power, I2C??Bus, 128 Taps
	X9250	822Kb / 20P	Low Noise/Low Power/SPI Bus/256 Taps Quad Digitally Controlled Potentiometers (XDCP??
	X9269	923Kb / 24P	Single Supply/Low Power/256-Tap/2-Wire Bus Dual Digitally-Controlled (XDCP?? Potentiometers

More results

X9409WV24Z-2.7 Datasheet(PDF) 9 Page - Intersil Corporation

X9409WV24Z-2.7 Datasheet(HTML) 9 Page - Intersil Corporation

Similar Part No. - X9409WV24Z-2.7

Similar Description - X9409WV24Z-2.7

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Datasheet Download

Link URL