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APX6223QDI-TYL Datasheet(PDF) 10 Page - Anpec Electronics Coropration |
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APX6223QDI-TYL Datasheet(HTML) 10 Page - Anpec Electronics Coropration |
10 / 16 page Copyright © ANPEC Electronics Corp. Rev. A.2 - Jul., 2005 APX6223 www.anpec.com.tw 10 Function Descriptions The APX6223 CMOS single chip builds driving capability for Digital Still Camera Exposure /Shutter/Focus/Zoom motor operation. The APX6223 can meet maximum various combinations of motor types inside of the DSC. The four groups of the independent inputs from host to control drive motor operations. The BRK selection pin can set 2 types of operations for channels 1~4 H bridge, which can set brake function for voltage control H bridge if BRK set “L”. Stepping Motor Control Refer the list below table for stepping motor control, which is defined as half-step and full-step motor control. The half-step is controlled by the following sequence (1)->(2)->(8)->(1) ->… , but for reverse side, sequence (1)->(8)->(7)->… . Moreover, the full-step is controlled by the following sequence (1)->(2)->(3)->(4)->(1)… , but for reverse side, sequence (1)->(4)->(3)->… . These channels are for DC motor Focus & Iris operation. BRK CH1 CH2 CH3 CH4 H IN1A/IN1B IN2A/IN2B IN3A/IN3B IN4A/IN4B L EN1/IN1B EN2/IN2B EN3/IN3B EN4/IN4B Note: BRK pin setting only available channel 1~4 IN/IN input control truth table (n=1~6) INnA INnB OUTnA OUTnB Mode L L Z Z OFF H L H L Forward L H L H Reversed H H L L Brake Note : ‘Z’high impedance ENn INnB OUTnA OUTnB Mode L - Z Z OFF H L H L Forward H H L H Reversed Note : ‘Z’high impedance Stepping motor control truth table (for channel 1,2 or 3,4) IN1A IN1B IN2A IN2B OUT1A OUT1B OUT2A OUT2B Half-step Full-step H L L L H L Z Z (1) H L H L H L H L (2) (1) L L H L Z Z H L (3) L H H L L H H L (4) (2) L H L L L H Z Z (5) L H L H L H L H (6) (3) L L L H Z Z L H (7) H L L H H L L H (8) (4) Note : ‘Z’high impedance Constant Voltage H-Bridge (Channel 5) The VOUT5A & VOUT5B are constant voltage output, which is four times as large as VC5 input. Output becomes saturated when VC5=VDD. This channel is for DC motor Zoom operation. Constant voltage H bridge (CH5) VC5 4R 4R R R Figure1. Constant Voltage Control Setting Constant Current H-Bridge (Channel 6) Channel 6 is a fixed current drive for VCM motor Shutter operation. When set V REFCT to “L”, and voltage from VREF is 1.2V through voltage resistors divider 100K Ω & 20K Ω (refer Figure2), and that VC6 can be calculated 1.2V x 20/(100+20) = 0.2V. If the package leads impedance is ignored (compare with RNF6 1 Ω), that EN/IN input control truth table (n=1~4) |
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