AS5247 datasheet(21/37 Pages) AMSCO

Il numero della parte	AS5247

Spiegazioni elettronici	14-bit Dual-die On-Axis Magnetic Rotary Position Sensor

PDF	37 Pages

Scroll/Zoom	100%

Produttore elettronici	AMSCO [ams AG]

Homepage	http://www.ams.com

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21 / 37 page

ams Datasheet: 2014-Jun-20 [v1-02]

AS5247 – 21

Detaile d Desc rip t ion

PWM

The PWM can be enabled with the bit setting PWMon. The PWM

encoded signal is displayed on the pin W or the pin I. The bit

setting UVW_ABI defines which output is used as PWM. The

PWM output consists of a frame of 4119 PWM clock periods, as

shown in Figure 34. The PWM frame has the following sections:

• 12 PWM Clocks for INIT

• 4 PWM Clocks for Error detection

• 4095 PWM clock periods of data

• 8 PWM clock periods low

The angle is represented in the data part of the frame with a

12-bit resolution. One PWM clock period represents 0.088

degree and has a typical duration of 444 ns.

If the embedded diagnostic of the AS5247 detects any error the

PWM interface displays only 12 clock periods high (0.3%

duty-cycle).

Figure 34:

Pulse Width Modulation Encoded Signal

time

data

8 clock pulse

low

16 clock pulse

high

AS5247 Scheda tecnica(PDF) 21 Page - ams AG