AS5045-ASST datasheet(11/47 Pages) AMSCO

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ams Datasheet

Page 11

[v2-01] 2017-Jul-13

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AS5045 − Timing Characteristics

Figure 10:

Timing Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Synchronous Serial Interface (SSI)

tDO active

Data output activated

(logic high)

Time between falling edge of

CSn and data output

activated

100

tCLK FE

First data shifted to

output register

Time between falling edge of

CSn and first falling edge of

CLK

500

TCLK / 2

Start of data output

Rising edge of CLK shifts out

one bit at a time

500

tDO valid

Data output valid

Time between rising edge of

CLK and data output valid

357

375

394

tDO tristate

Data output tristate

After the last bit DO changes

back to “tristate”

100

tCSn

Pulse width of CSn

CSn = high; To initiate

read-out of next angular

position

500

fCLK

Read-out frequency

Clock frequency to read out

serial data

MHz

Pulse Width Modulation Output

fPWM

PWM frequency

Signal period = 4097μs ±5%

at TAMB = 25°C

232

244

256

Signal period = 4097μs ±10%

at TAMB = -40 to 125°C

220

244

268

PWMIN

Minimum pulse width

Position 0d; Angle 0°

0.95

1.05

μs

PWMAX

Maximum pulse width

Position 4095d; Angle

359.91°

3891

4096

4301

μs

Timing Characteristics

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