austriamicrosystems AS5043 Manual de instrucciones - Página 5
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Imprimir páginaAS5043 10-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
Adapter PCB Operation Manual
Output modes:
•
Absolute angle information
To access the 10-bit absolute angle information, an external microcontroller must be connected as
shown in Figure 5. Make sure that the controller is able to drive the CSn pin with the connected pulldown
resistor (R7). If necessary, remove this resistor.
The clock rate can be as high as 1MHz. There is no minimum clock rate. Data can also be clocked
manually.
The digital I/O's of the AS5043 are buffered by VDD5V, therefore the digital I/O's of the controller should
be at the same voltage level (see power supply options table).
•
Analog output
No additional components are required. The voltage at the Vout pin (pins 3 of J1) indicates the position
of the encoder. (see datasheet).
Programming (zapping) the Chip.
For programming the AS5043, 3 digital signals are required: CSn, Prog and CLK (see datasheet). For permanent
writing, VPROG must be elevated to 7.5V during the programming cycle.
For immediate programming, this PCB can be connected directly to the AS5043 demo board (available
separately), where all the programming timings are generated by the onboard microcontroller.
AS5043 adapter PCB layout and component placement:
The PCB has several connection options. All required
pins are accessible via the two 100mil- connectors J1
and J2.
These connectors are 600mil apart, which allows them to
be soldered to a wide 16-pin DIL IC socket for easier
access or ribbon cable connection.
Furthermore, J2 (pins 3..9) fit to the AS5043 demo board
and allow this PCB to be used as external encoder.
The hole in the PCB underneath the chip allows
centering of a 6mm diameter magnet.
A Vout Led and voltage regulators are optional.
Minimum required components are C4 (1µF) and the
CSN pull-down R7 (0...4k7).
Layout: Bottom View
Revision A.02, 04. Jul 06
AS5043 adapter board: top view
Layout: Bottom Components
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