AS5045

Data Sheet

www.austriamicrosystems.com

Revision 1.7

5 – 33

Pin

Symbol

Type

Description

5

NC

-

Must be left unconnected

6

Mode

-

Select between slow (low, VSS) and fast (high, VDD5V) mode. Internal pull-down

resistor.

7

VSS

S

Negative Supply Voltage (GND)

8

Prog_DI

DI_PD

OTP Programming Input and Data Input for Daisy Chain mode. Internal pull-

down resistor (~74k

Ω). Connect to VSS if not used

9

DO

DO_T

D

ata Output of Synchronous Serial Interface

10

CLK

DI, ST

Cl

ock Input of Synchronous Serial Interface; Schmitt-Trigger input

11

CSn

DI_PU, ST

C

hip Select, active low; Schmitt-Trigger input, internal pull-up resistor (~50k

Ω)

12

PWM

DO

P

ulse Width Modulation of approx. 244Hz; 1µs/step (opt. 122Hz; 2µs/step)

13

NC

-

Must be left unconnected

14

NC

-

Must be left unconnected

15

VDD3V3

S

3V-Regulator Output, internally regulated from VDD5V. Connect to VDD5V for

3V supply voltage. Do not load externally.

16

VDD5V

S

Positive Supply Voltage, 3.0 to 5.5 V

DO_OD

digital output open drain

S

supply pin

DO

digital output

DI

digital input

DI_PD

digital input pull-down

DO_T

digital output /tri-state

DI_PU

digital input pull-up

ST

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

AS5045

AS5040

Resolution

12bits, 0.088°/step.

10bit, 0.35°/step

Data length

Read: 18bits

(12bits data + 6 bits status)

OTP write: 18 bits

(12bits zero position + 6 bits mode selection)

Read: 16bits

(10bits data + 6 bits status)

OTP write: 16 bits

(10bits zero position + 6 bits mode selection)

Incremental

encoder

Not used

Pin 3: not used

Pin 4:not used

Quadrature, step/direction and BLDC motor

commutation modes

Pin 3:incremental output A_LSB_U

Pin 4:incremental output B_DIR_V

Pins 1 and 2

MagINCn, MagDECn: same feature as

AS5040, additional OTP option for red-

yellow-green magnetic range

MagINCn, MagDECn indicate in-range or

out-of-range magnetic field plus movement

of magnet in z-axis

Pin 6

MODE pin, switch between fast and slow

mode

Pin 6:Index output

Pin 12

PWM output: frequency selectable by OTP:

1µs / step, 4096 steps per revolution,

f=244Hz 2µs/ step, 4096 steps per

revolution, f=122Hz

PWM output:

1µs / step, 1024 steps per revolution,

976Hz PWM frequency

Sampling

frequency

Selectable by MODE input pin:

2.5kHz, 10kHz

Fixed at 10kHz @10bit resolution