 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SX1512BIULTRT Datasheet(PDF) 30 Page - Semtech Corporation |
|
||||||||||||||||||||||||||||||
SX1512BIULTRT Datasheet(HTML) 30 Page - Semtech Corporation |
|
|
30 / 37 page 
ADVANCED COMMUNICATIONS & SENSING Rev 4 – 26 th April 2011 30 www.semtech.com SX1511B/SX1512B World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine 0x21 RegLEDDriverEnableA 0x00 7:0 Enables LED Driver for each [output-configured] IO 0 : LED Driver is disabled 1 : LED Driver is enabled 7:3 Unused 0x22 RegDebounceConfig 0x00 2:0 Debounce time (Cf. §4.5.1) 000: 0.5ms x 2MHz/fOSC 001: 1ms x 2MHz/fOSC 010: 2ms x 2MHz/fOSC 011: 4ms x 2MHz/fOSC 100: 8ms x 2MHz/fOSC 101: 16ms x 2MHz/fOSC 110: 32ms x 2MHz/fOSC 111: 64ms x 2MHz/fOSC 0x23 RegDebounceEnableB 0x00 7:0 Enables debouncing for each [input-configured] IO 0 : Debouncing is disabled 1 : Debouncing is enabled 0x24 RegDebounceEnableA 0x00 7:0 Enables debouncing for each [input-configured] IO 0 : Debouncing is disabled 1 : Debouncing is enabled 7 Reserved 6:4 Auto Sleep time (no key press within this time will set keypad engine to sleep) 000 : OFF 001 : 128ms x 2MHz/fOSC 010 : 256ms x 2MHz/fOSC 011 : 512ms x 2MHz/fOSC 100 : 1sec x 2MHz/fOSC 101 : 2sec x 2MHz/fOSC 110 : 4sec x 2MHz/fOSC 111 : 8sec x 2MHz/fOSC 3 Unused 0x25 RegKeyConfig1 0x00 2:0 Scan time per row (must be set above debounce time). 000 : 1ms x 2MHz/fOSC 001 : 2ms x 2MHz/fOSC 010 : 4ms x 2MHz/fOSC 011 : 8ms x 2MHz/fOSC 100 : 16ms x 2MHz/fOSC 101 : 32ms x 2MHz/fOSC 110 : 64ms x 2MHz/fOSC 111 : 128ms x 2MHz/fOSC 7:6 Unused 5:3 Number of rows (outputs) + key scan enable 000 : Key scan OFF 001 : 2 rows – IO[0:1] 010 : 3 rows – IO[0:2] 011 : 4 rows – IO[0:3] 100 : 5 rows – IO[0:4] 101 : 6 rows – IO[0:5] 110 : 7 rows – IO[0:6] 111 : 8 rows – IO[0:7] 0x26 RegKeyConfig2 0x00 2:0 Number of columns (inputs) 000 : 1 column – IO[8] 001 : 2 columns – IO[8:9] 010 : 3 columns – IO[8:10] 011 : 4 columns – IO[8:11] 100 : 5 columns – IO[8:12] 101 : 6 columns – IO[8:13] 110 : 7 columns – IO[8:14] 111 : 8 columns – IO[8:15] 0x27 RegKeyData1 0xFF 7:0 Column which generated NINT (active low) Ex: RegKeyData1=11011111 => IO13 has generated NINT The register is automatically cleared when RegKeyData2 is read. 0x28 RegKeyData2 0xFF 7:0 Row which generated NINT (active low) Ex: RegKeyData2=11111110 => IO0 has generated NINT When the register is read both RegKeyData1 & RegKeyData2 are automatically cleared together with NINT and key scan continues. 7:5 Unused 0xXX RegTOnX 0x00 4:0 ON Time of IO[X]: 0 : Infinite (Static mode, TOn directly controlled by RegData, Cf §4.8.2) 1 - 15 : TOnX = 64 * RegTOnX * (255/ClkX) 16 - 31 : TOnX = 512 * RegTOnX * (255/ClkX) 0xXX RegIOnX 0xFF 7:0 ON Intensity of IO[X] - Linear mode : IOnX = RegIOnX - Logarithmic mode (fading capable IOs only) : IOnX = f(RegIOnX) , Cf §4.8.5 |
|
English ▼
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
