AS5140H-ASSU austriamicrosystems, AS5140H-ASSU Datasheet - Page 15

• Manufacturer Part Number: AS5140H-ASSU
• Description: ENCODER, MAGNETIC, ROTARY, 10BIT, 16SSOP
• Manufacturer: austriamicrosystems

Specifications of AS5140H-ASSU

• Brief Features: User Programmable Zero / Index Position, Failure Detection Mode
• Supply Voltage Range: 3V To 3.6V, 4.5V To 5.5V
• Operating Temperature Range: -40°C To +150°C
• Digital Ic Case: RoHS Compliant
• Ic Function: 10-bit Programmable Magnetic Rotary Encoder
• Rohs Compliant: Yes

AS5140H
Data Sheet - D e t a i l e d D e s c r i p t i o n
Figure 6. Daisy Chain Hardware Configuration
Figure 7. Daisy Chain Mode Data Transfer
Programming Daisy Chained Devices
In Daisy Chain mode, the Prog pin is connected directly to the DO pin of the subsequent device in the chain
Figure
applied to pin Prog. This voltage level exceeds the limits for pin DO, so one of the following precautions must be made
during programming:
Due to the parallel connection of CLK and CSn, all connected devices may be programmed simultaneously.
Incremental Outputs
Three different incremental output modes are possible with quadrature A/B being the default mode.
two-channel quadrature as well as the step / direction incremental signal (LSB) and the direction bit in clockwise (CW)
and counter-clockwise (CCW) direction.
Quadrature A/B Output (Quad A/B Mode)
The phase shift between channel A and B indicates the direction of the magnet movement. Channel A leads channel B
at a clockwise rotation of the magnet (top view) by 90 electrical degrees. Channel B leads channel A at a counter-
clockwise rotation.
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Open the connection
Add a Schottky diode between DO and Prog (Anode = DO, Cathode = Prog)
CSn
CLK
DO
6). During programming
t
DO active
t
CLK FE
t
T
DO valid
CLK/2
1
D9
DO
µC
D8
→
Data IN
(see Programming the AS5140H on page
Prog
CLK
D7
CSn
Angular Position Data
D6
during programming, (or)
D5
DO
D4
CSn
1
AS5140H
st
Device
D3
Prog
CLK
Revision 1.1
8
D2
D1
DO
1
D0 OCF COF LIN
2
CSn
st
AS5140H
nd
Device
Device
Prog
CLK
20), a programming voltage of 7.5V must be
Status Bits
DO
last Device
Mag
CSn
INC
AS5140H
DEC
Mag
Prog
CLK
16
Even
PAR
D
Angular Position Data
Figure 8
2
1
D9
nd
Device
2
D8
shows the
3
(see
D7
15 - 38