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SX1510B Datasheet(PDF) 2 Page - Semtech Corporation |
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SX1510B Datasheet(HTML) 2 Page - Semtech Corporation |
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2 / 43 page  ADVANCED COMMUNICATIONS & SENSING Rev 3 – 9 th Sept. 2010 2 www.semtech.com SX1510B/SX1511B/SX1512B World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine Table of Contents GENERAL DESCRIPTION ..................................................................................................................... 1 ORDERING INFORMATION................................................................................................................... 1 KEY PRODUCT FEATURES.................................................................................................................. 1 TYPICAL APPLICATIONS ..................................................................................................................... 1 1 PIN DESCRIPTION ...................................................................................................................... 4 1.1 SX1510B 4-channel SPI GPIO with LED Driver 4 1.2 SX1511B 8-channel SPI GPIO with LED Driver and Keypad Engine 5 1.3 SX1512B 16-channel SPI GPIO with LED Driver and Keypad Engine 6 1.4 I/Os Feature Summary 7 2 ELECTRICAL CHARACTERISTICS............................................................................................... 8 2.1 Absolute Maximum Ratings 8 2.2 Electrical Specifications 8 3 TYPICAL OPERATING CHARACTERISTICS ............................................................................... 11 4 BLOCK DETAILED DESCRIPTION ............................................................................................. 13 4.1 SX1510B 4-channel SPI GPIO with LED Driver 13 4.2 SX1511B 8-channel SPI GPIO with LED Driver and Keypad Engine 13 4.3 SX1512B 16-channel SPI GPIO with LED Driver and Keypad Engine 14 4.4 Reset 14 4.4.1 Hardware (NRESET) 14 4.4.2 Software (RegReset) 15 4.5 SPI Interface 15 4.5.1 WRITE 15 4.5.2 READ 15 4.6 I/O Banks 16 4.6.1 Input Debouncer 16 4.6.2 Keypad Scanning Engine 16 4.6.3 Level Shifter 16 4.6.4 Polarity Inverter 18 4.7 Interrupt (NINT) 18 4.8 Clock Management 19 4.9 LED Driver 19 4.9.1 Overview 19 4.9.2 Static Mode 20 4.9.3 Single Shot Mode 20 4.9.4 Blink Mode 21 4.9.5 LED Driver Modes 21 4.9.6 Synchronization of LED Drivers across several ICs 22 4.9.7 Tutorial 22 5 CONFIGURATION REGISTERS.................................................................................................. 24 5.1 SX1510B 4-channel GPIO with LED Driver 24 5.2 SX1511B 8-channel GPIO with LED Driver and Keypad Engine 27 5.1 SX1512B 16-channel GPIO with LED Driver and Keypad Engine 31 6 APPLICATION INFORMATION ................................................................................................... 37 6.1 Typical Application Circuit 37 6.2 Typical LED Connection 37 |
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