AS5134-ASSU austriamicrosystems, AS5134-ASSU Datasheet - Page 11

• Manufacturer Part Number: AS5134-ASSU
• Description: ENCODER, MAGNETIC, ROTARY, 8BIT, 20SSOP
• Manufacturer: austriamicrosystems

Specifications of AS5134-ASSU

• Brief Features: 9-Bit Multiturn Counter, User Programmable Zero Position And Sensitivity
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +140°C
• Digital Ic Case: RoHS Compliant
• Ic Function: Programmable High Speed Magnetic Rotary Encoder
• Rohs Compliant: Yes

AS5134
Data Sheet - D e t a i l e d D e s c r i p t i o n
Serial 3-Wire Read-only Connection
This simplified connection is possible when the AS5134 is only used to provide the angular data (no power down or
OTP access). The Chip Select (CS) and Clock (DCLK) connection is the same as in the R/W mode, but only a digital
input pin (not an I/O pin) is required for the DIO connection. As the first 5 bits of the data transmission are command
bits sent to the AS5134, both the microcontroller and the AS5134 are configured as digital inputs during this phase.
Therefore, a pull-down resistor must be added to make sure that the AS5134 reads “00000” as the first 5 bits, which
sets the Read_Angle command.
Note: All further application examples are shown in R/W mode, however read-only mode is also possible unless
Figure 5. SSI Read-only Serial Data Transmission
Table 6. 2-or 3-wire Read-only Serial Bit Sequence (21bit read)
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D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
0
DCLK
otherwise noted.
DIO
0
DIO
CS
0
t1
0
1
0
VSS
VDD
+5V
command phase
lock
2
D5
VDD
VSS
3
Output
Output
D4
Input
D3
4
AGC
10k…
100k
D2
Revision 1.8
5
Read
D1
D15
6
D0
CS
DCLK
DIO
D14
data phase
D8
D8
7
VDD
C2
D7
D7
D13
VSS
8
D6
D6
D12
100n
D5
D5
D1
20
Angle
D4
D4
D0
t9
21
t10
D3
D3
D2
D2
DIO read
DIO write
D1
D1
11 - 39
D0
D0