POWERSTEP01 datasheet(14/92 Pages) STMICROELECTRONICS

14 / 92 page

Electrical characteristics

powerSTEP01

14/92

DocID025022 Rev 5

VOSCOUTH

OSCOUT clock source high level

voltage

Internal oscillator

2.4

VOSCOUTL

OSCOUT clock source low level

voltage

Internal oscillator

0.3

trOSCOUT

tfOSCOUT

OSCOUT clock source rise and fall

time

Internal oscillator

thigh

OSCOUT clock source high time

Internal oscillator

31.25

textosc

Internal to external oscillator switching

delay

3ms

tintosc

External to internal oscillator switching

delay

100

µs

SPI

fCK,MAX

Maximum SPI clock frequency(4)

5MHz

trCK

tfCK

SPI clock rise and fall time(4)

1µs

thCK

tlCK

SPI clock high and low time(4)

tsetCS

Chip select setup time(4)

tholCS

Chip select hold time(4)

tdisCS

Deselect time(4)

625

tsetSDI

Data input setup time(4)

tholSDI

Data input hold time(4)

tenSDO

Data output enable time(4)

tdisSDO

Data output disable time(4)

tvSDO

Data output valid time(4)

tholSDO

Data output hold time(4)

0ns

PWM modulators

fPWM

Programmable PWM frequency(2)

fosc = 32 MHz

F_PWM_INT=’11X’

F_PWM_DEC=’000’

5.6

kHz

fosc = 32 MHz

F_PWM_INT=’000’

F_PWM_DEC=’111’

125

kHz

NPWM

PWM resolution

bit

Current control

VREF, MAX

Maximum reference voltage

1000

VREF, MIN

Minimum reference voltage

7.8

Table 4. Electrical characteristics (continued)

Symbol

Parameter

Test conditions

Min.

Typ.

Max. Unit

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