L6285 datasheet(5/16 Pages) STMICROELECTRONICS

5 / 16 page

ELECTRICAL CHARACTERISTICS (continued)

OSCILLATOR (see Fig. 6)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

fosc

Oscillator Frequency

Pin OSC/RESET

COSC = 3.3nF; ROSC = 10K

Ω

KHz

Tdsc

Capacitor Discharge Time

(protect dead time)

COSC = 3.3nF; ROSC = 10K

Ω

(see Fig. 1)

0.8

1.4

Vreset

Reset Threshold Voltage

INTERFACE TIMING

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

SCK Data Clock Cycle

(see Fig. 2)

200

SCK Data Set-upTime

SCK Data Hold Time

SCK-STB Interval Time

STB Pulse Width

100

Note 1: No output loaded; all register to low condition; no reset applied; V P = 26.5V; V S = 5.5V

Note 2: The effect of the internal filter (RC Network) is not considered.

Figure 2: Interface Timing (Serial loading Mode)

Figure 1: Discharge time tdsc or Protection Time

Serial

Input Data

b15

D15

b14

b13

b12

b11

b10

L6285

5/16

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