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AD5235BRU250 датащи(PDF) 6 Page - Analog Devices |
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AD5235BRU250 датащи(HTML) 6 Page - Analog Devices |
6 / 10 page PRELIMINARY TECHNICAL DATA Nonvolatile Memory Digital Potentiometers AD5235 REV PrD 6 NOV, 2000 6 Information contained in this Product Concept data sheet describes a product in the early definition stage. There is no guarantee that the information contained here will become a final product in its present form. For latest information contact Walt Heinzer/Analog Devices, Santa Clara, CA. TEL(408)562-7254; FAX (408)727-1550; walt.heinzer@analog.com Table 2. AD5235 Instruction/Operation Truth Table Inst No. Instruction Byte 1 B15 •••••••••••••••• B8 Data Byte 1 B15 •••• B8 Data Byte 0 B7 ••• B0 Operation C3 C2 C1 C0 A3 A2 A1 A0 X ••• D9 D8 D7 ••• D0 0 0 0 0 0 X X X X X ••• X X X ••• X NOP: Do nothing 1 0 0 0 1 << ADDR >> X ••• X X X ••• X Write contents of EEMEM(ADDR) to RDAC(ADDR) Register 2 0 0 1 0 << ADDR >> X ••• X X X ••• X SAVE WIPER SETTING: Write contents of RDAC(ADDR) to EEMEM(ADDR) 3 0 0 1 1 << ADDR >> X ••• D9 D8 D7 ••• D0 Write contents of Serial Register Data Byte 0 & 1 to EEMEM(ADDR) 4 0 1 0 0 << ADDR >> X ••• X X X ••• X DEC 6dB: Right Shift contents of RDAC(ADDR) , LSB rolls over to MSB position 5 0 1 0 1 X X X X X ••• X X X ••• X DEC All 6dB: Right Shift contents of all RDAC Registers, LSB rolls over to MSB position 6 0 1 1 0 << ADDR >> X ••• X X X ••• X Decrement contents of RDAC(ADDR) by One, does not rollover at zero-scale 7 0 1 1 1 X X X X X ••• X X X ••• X Decrement contents of all RDAC Registers by One, does not rollover at zero-scale 8 1 0 0 0 0 0 0 0 X ••• X X X ••• X RESET: Load all RDACs with their corresponding EEMEM previously-saved values 9 1 0 0 1 << ADDR >> X ••• X X X ••• X Write contents of EEMEM(ADDR) to Serial Register Data Byte 0 & 1 10 1 0 1 0 << ADDR >> X ••• X X X ••• X Write contents of RDAC(ADDR) to Serial Register Data Byte 0 & 1 11 1 0 1 1 << ADDR >> X ••• D9 D8 D7 ••• D0 Write contents of Serial Register Data Byte 0 &1 to RDAC(ADDR) 12 1 1 0 0 << ADDR >> X ••• X X X ••• X INC 6dB: Left Shift contents of RDAC(ADDR), stops at all 'Ones'. 13 1 1 0 1 X X X X X ••• X X X ••• X INC All 6dB: Right Shift contents of all RDAC Registers, stops at all 'Ones'. 14 1 1 1 0 << ADDR >> X ••• X X X ••• X Increment contents of RDAC(ADDR) by One, does not rollover at full-scale stops at all 'Ones'. 15 1 1 1 1 X X X X X ••• X X X ••• X Increment contents of all RDAC Registers by One, does not rollover at full-scale stops at all 'Ones'. NOTES: 1. The SDO output shifts-out the last 24-bits of data clocked into the serial register for daisy chain operation. Exception, following Instruction #9 or #10 the selected internal register data will be present in data byte 0 & 1. Instructions following #9 & #10 must be a full 24-bit data word to completely clock out the contents of the serial register. 2. The RDAC register is a volatile scratch pad register that is refreshed at power ON from the corresponding non-volatile EEMEM register. 3. The increment, decrement and shift commands ignore the contents of the shift register Data Byte 0. 4. Execution of the Operation column noted in the table takes place when the CS strobe returns to logic high. . |
Аналогичный номер детали - AD5235BRU250 |
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Аналогичное описание - AD5235BRU250 |
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