BF6921A

BYD Microelectronics Co., Ltd. BF6921A BF6921A Datasheet 8/16-Channel Capacitive TouchKey Controller Product Preview Reversion 1.0 Date April 16, 2010 Datasheet TS-COD-PD-0004 Rev. A/0 Page 1 of 36 BYD Microelectronics Co., Ltd. BF6921A List of Contents 1. SPECIFICATION ................................................................................................................................................ 5 1.1 Features ...................................................................................................................................................................... 5 1.2 Applications ................................................................................................................................................................ 5 2. INTRODUCTION................................................................................................................................................. 6 3. HARDWARE INTERFACE ................................................................................................................................. 6 3.1 I2C Timing Specification............................................................................................................................................ 6 3.1.1 Register Write Packet .................................................................................................................................... 7 3.1.2 Register Read Packet.....................................