L9935

Functional description

Doc ID 5198 Rev 10

21/29

5.14

Test condition for all propagation times

Unless otherwise specified) HIGH

 3 V; LOW  0.8 V; t

r, tf = 10 ns;

Enable: ENN Low < 0.8 V, ENN High > VCC -0.8 V

Table of bits

bit5,bit4:

current range of bridge A (Outputs A1 and A2)

bit3:

polarity of bridge A

bit2,bit1:

current range of bridge B (Outputs B1 and B2)

bit0:

polarity of bridge B

bit7,bit6:

Error1 and Error 2

Table 9.

Test condition for all propagation times

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

fSCLK

SCK-Frequency

-

DC

-

2MHz

-

t1

SCK stable before and after

CSN = 0

-100

-

-

ns

tch

Width of SCK high pulse

-

200

-

-

ns

tcl

Width of SCK low pulse

-

200

-

-

ns

tsu

SDI setup time

-

80

-

-

ns

tsh

SDI hold time

-

80

-

-

ns

td

SDO delay time (CL = 50pF)

-

-

100

-

ns

tzc

SDO high Z CSN high

-

-

100

-

ns

ten_sck

Setup time ENABLE to SCK

HIGH > VCC-1.2 V

30

-

-

s

tpd

Propagation delay SPI to output

QXX

--

2(1)

-

s

1.

Measured at a transition from High impedance (Bridge off) to bridge on. (Reversing polarity takes about 1ms longer

because the bridge first turns off before turning on in reverse direction).