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AS5045
Data Sheet
Pin
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
NC
Mode
VSS
Prog_DI
DO
CLK
CSn
PWM
NC
NC
VDD3V3
VDD5V
Type
-
-
S
DI_PD
DO_T
DI, ST
DI_PU, ST
DO
-
-
S
S
Description
Must be left unconnected
Select between slow (low, VSS) and fast (high, VDD5V) mode. Internal pull-down
resistor.
Negative Supply Voltage (GND)
OTP Prog ramming Input and Data Input for Daisy Chain mode. Internal pull-
down resistor (~74k Ω ). Connect to VSS if not used
D ata O utput of Synchronous Serial Interface
Cl oc k Input of Synchronous Serial Interface; Schmitt-Trigger input
C hip S elect, active low; Schmitt-Trigger input, internal pull-up resistor (~50k Ω )
P ulse W idth M odulation of approx. 244Hz; 1μs/step (opt. 122Hz; 2μs/step)
Must be left unconnected
Must be left unconnected
3V-Regulator Output, internally regulated from VDD5V. Connect to VDD5V for
3V supply voltage. Do not load externally.
Positive Supply Voltage, 3.0 to 5.5 V
DO_OD
DO
DI_PD
DI_PU
digital
digital
digital
digital
output open drain
output
input pull-down
input pull-up
S
DI
DO_T
ST
supply pin
digital input
digital output /tri-state
Schmitt-Trigger input
6 Electrical Characteristics
6.1 AS5045 Differences to AS5040
All parameters are according to AS5040 datasheet except for the parameters shown below:
Building Block
Resolution
Data length
Incremental
encoder
Pins 1 and 2
Pin 6
Pin 12
Sampling
frequency
AS5045
12bits, 0.088°/step.
Read: 18bits
(12bits data + 6 bits status)
OTP write: 18 bits
(12bits zero position + 6 bits mode selection)
Not used
Pin 3: not used
Pin 4:not used
MagINCn, MagDECn: same feature as
AS5040, additional OTP option for red-
yellow-green magnetic range
MODE pin, switch between fast and slow
mode
PWM output: frequency selectable by OTP:
1μs / step, 4096 steps per revolution,
f=244Hz 2μs/ step, 4096 steps per
revolution, f=122Hz
Selectable by MODE input pin:
2.5kHz, 10kHz
AS5040
10bit, 0.35°/step
Read: 16bits
(10bits data + 6 bits status)
OTP write: 16 bits
(10bits zero position + 6 bits mode selection)
Quadrature, step/direction and BLDC motor
commutation modes
Pin 3:incremental output A_LSB_U
Pin 4:incremental output B_DIR_V
MagINCn, MagDECn indicate in-range or
out-of-range magnetic field plus movement
of magnet in z-axis
Pin 6:Index output
PWM output:
1μs / step, 1024 steps per revolution,
976Hz PWM frequency
Fixed at 10kHz @10bit resolution
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