L6474 datasheet(11/51 Pages) STMICROELECTRONICS

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L6474

Electrical characteristics

Doc ID 022529 Rev 2

11/51

Logic inputs and outputs

Low logic level input voltage

0.8

VIH

High logic level input voltage

IIH

High logic level input current (4)

IN = 5 V

µA

IIL

Low logic level input current (5)

VIN = 0 V

-1

µA

VOL

Low logic level output voltage (6)

VDD = 3.3 V, IOL = 4 mA

0.3

VDD = 5 V, IOL = 4 mA

0.3

VOH

High logic level output voltage

VDD = 3.3 V, IOH = 4 mA

2.4

VDD = 5 V, IOH = 4 mA

4.7

RPU

RPD

CS pull-up and STBY pull-down resistors

CS = GND;

STBY/RST = 5 V

335

430

565

Ω

RPUDIR

DIR input pull-up resistance

DIR = GND

110

Ω

Ilogic

Internal logic supply current

3.3 V VREG externally

supplied, internal oscillator

3.7

4.3

Ilogic,STBY

Standby mode internal logic supply current

3.3 V VREG externally

supplied

2.5

µA

fSTCK

Step clock input frequency

MHz

Internal oscillator and external oscillator driver

fosc,i

Internal oscillator frequency

j = 25 °C, V

REG = 3.3 V

-3%

+3%

MHz

fosc,e

Programmable external oscillator frequency

MHz

VOSCOUTH OSCOUT clock source high level voltage

Internal oscillator 3.3 V

VREG externally supplied;

IOSCOUT = 4 mA

2.4

VOSCOUTL

OSCOUT clock source low level voltage

Internal oscillator 3.3 V

VREG externally supplied;

IOSCOUT = 4 mA

0.3

trOSCOUT

tfOSCOUT

OSCOUT clock source rise and fall time

Internal oscillator

textosc

Internal to external oscillator switching delay

tintosc

External to internal oscillator switching delay

1.5

µs

SPI

fCK,MAX

Maximum SPI clock frequency (7)

MHz

trCK

tfCK

SPI clock rise and fall time (7)

CL = 30 pF

thCK

tlCK

SPI clock high and low time (7)

tsetCS

Chip select set-up time (7)

350

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max. Unit

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