AS5035 austriamicrosystems, AS5035 Datasheet - Page 6

• Manufacturer Part Number: AS5035
• Description: IC, MAGNETIC ROTARY ENCODER 8BIT SSOP-16
• Manufacturer: austriamicrosystems
• Type: Magnetic Rotary Encoderr

Specifications of AS5035

• Ic Function: Encoder IC
• Supply Voltage Range: 3.3V, 5V
• Operating Temperature Range: -40°C To +125°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 16
• Filter Terminals: SMD
• No. Of Bits: 8 Bit
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS5035 – 64 PPR INCREMENTAL MAGNETIC ROTARY ENCODER
7.1
OTP programming requires access to the factory settings
register of the AS5035. Improper or accidental modification
of the factory settings may render the chip unusable.
Therefore the Zero Position and CCW programming is
recommended only with austriamicrosystems proprietary
hardware and software.
Note: During the programming process, the transitions in
the programming current may cause high voltage spikes
generated by the inductance of the connection cable. To
avoid these spikes and possible damage to the IC, the
connection wires, especially the signals Prog and VSS
must be kept as short as possible. The maximum wire
length between the V
(see Figure 6) should not exceed 50mm (2 inches). To
suppress eventual voltage spikes, a 10nF ceramic
capacitor should be connected close to pins Prog and VSS.
This capacitor is only required for programming, it is not
required for normal operation.
The clock timing t
ensure that the signal Prog is stable at the rising edge of
CLK (see Figure 7). Additionally, the programming supply
voltage should be buffered with a 10µF capacitor mounted
close to the switching transistor. This capacitor aids in
providing peak currents during programming.
Revision 1.5
OTP Programming Timing
clk
PROG
must be selected at a proper rate to
switching transistor and pin Prog
Figure 7: Programming access – write data (first section of Figure 8)
Figure 8: Complete programming sequence
www.austriamicrosystems.com
The specified programming voltage at pin Prog is 7.3 –
7.5V (see section 12.8). To compensate for the voltage
drop across the VPROG switching transistor, the applied
programming voltage may be set slightly higher (7.5 -
7.1.1
The absolute angular output value, by default, increases
with clockwise rotation of the magnet (top view). Setting
the CCW-bit (see Figure 7) allows for reversing the
indicated direction, e.g. when the magnet is placed
underneath the IC:
CCW = 0 – angular value increases clockwise;
CCW = 1 – angular value increases counterclockwise.
Note: Further information on the required hardware and
software for Zero Position programming of the AS5035 can
be
austriamicrosystems website:
http:www.austriamicrosystems.com
(
8.0V).
Rotary Encoders
found
CCW Bit Programming
in
the
AS5035)
“AS5035”
section
Page 6 of 17
of
the