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X9401WV24IZ-2.7 Datasheet(PDF) 2 Page - Intersil Corporation |
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X9401WV24IZ-2.7 Datasheet(HTML) 2 Page - Intersil Corporation |
2 / 18 page 2 FN8190.4 October 13, 2009 Pin Descriptions Host Interface Pins SERIAL OUTPUT (SO) SO is a push/pull serial data output pin. During a read cycle, data is shifted out on this pin. Data is clocked out by the falling edge of the serial clock. SERIAL INPUT SI is the serial data input pin. All opcodes, byte addresses and data to be written to the pots and pot registers are input on this pin. Data is latched by the rising edge of the serial clock. SERIAL CLOCK (SCK) The SCK input is used to clock data into and out of the X9401. CHIP SELECT (CS) When CS is HIGH, the X9401 is deselected and the SO pin is at high impedance, and (unless an internal write cycle is underway) the device will be in the standby state. CS LOW enables the X9401, placing it in the active power mode. It should be noted that after a power-up, a HIGH to LOW transition on CS is required prior to the start of any operation. HOLD (HOLD) HOLD is used in conjunction with the CS pin to select the device. Once the part is selected and a serial sequence is underway, HOLD may be used to pause the serial communication with the controller without resetting the serial sequence. To pause, HOLD must be brought LOW while SCK is LOW. To resume communication, HOLD is brought HIGH, again while SCK is LOW. If the pause feature is not used, HOLD should be held HIGH at all times. DEVICE ADDRESS (A0 - A1) The address inputs are used to set the least significant 2 bits of the 8-bit slave address. A match in the slave address serial data stream must be made with the address input in order to initiate communication with the X9401. A maximum of 4 devices may occupy the SPI serial bus. Potentiometer Pins VH (VH0 - VH3)/ RH (RH0 - RH3), VL (VL0 - VL3)/RL (RL0 - RL3) The VH/RH and VL/RL inputs are equivalent to the terminal connections on either end of a mechanical potentiometer. VW (VW0 - VW3)/ RW (RW0 - RW3) The wiper outputs are equivalent to the wiper output of a mechanical potentiometer. HARDWARE WRITE PROTECT INPUT (WP) The WP pin when LOW prevents nonvolatile writes to the Wiper Counter Registers. Ordering Information PART NUMBER PART MARKING VCC LIMITS (V) POTENTIOMETER ORGANIZATION (k Ω) TEMP RANGE (°C) PACKAGE PKG. DWG. # X9401WS24IZ* (Note 1) X9401WS ZI 5 ±10% 10 -40 to +85 24 Ld SOIC (300 mil) (Pb-free) M24.3 X9401WS24I X9401WS I -40 to +85 24 Ld SOIC (300 mil) M24.3 X9401WS24Z* (Note 1) X9401WS Z -40 to +85 24 Ld SOIC (300 mil) M24.3 X9401WV24IZ* (Note 1) X9401WV ZI -40 to +85 24 Ld TSSOP (4.4mm) (Pb-free) MDP0044 X9401WV24Z* (Note 1) X9401WV Z -40 to +85 24 Ld TSSOP (4.4mm) (Pb-free) MDP0044 X9401WS24I-2.7* (Note 2) X9401WS G 2.7 to 5.5 -40 to +85 24 Ld SOIC (300 mil) M24.3 X9401WS24IZ-2.7* (Note) X9401WS ZG -40 to +85 24 Ld SOIC (300 mil) (Pb-free) M24.3 X9401WS24Z-2.7* (Note 1) X9401WS ZF -40 to +85 24 Ld SOIC (300 mil) (Pb-free) M24.3 X9401WV24-2.7 X9401WV F -40 to +85 24 Ld TSSOP (4.4mm) MDP0044 X9401WV24IZ-2.7* (Note 1) X9401WV ZG -40 to +85 24 Ld TSSOP (4.4mm) (Pb-free) MDP0044 X9401WV24Z-2.7* (Note 1) X9401WV ZF -40 to +85 24 Ld TSSOP (4.4mm) (Pb-free) MDP0044 *Add “T1” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 2. Not recommended for new designs. X9401 |
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