L9935 查看數據表（PDF） - STMicroelectronics

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L9935

Two-phase stepper motor driver

STMicroelectronics 

L9935

Functional description

5.14 Test condition for all propagation times

Unless otherwise specified) HIGH  3 V; LOW  0.8 V; tr, tf = 10 ns;

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

Table 9. Test condition for all propagation times

Symbol

Parameter

Test conditions

Min. Typ. Max. Unit

fSCLK SCK-Frequency

-

t1

SCK stable before and after

CSN = 0

-

DC

- 2MHz -

100

-

-

ns

tch

tcl

tsu

tsh

td

tzc

ten_sck

tpd

Width of SCK high pulse

-

Width of SCK low pulse

-

SDI setup time

-

SDI hold time

-

SDO delay time (CL = 50pF) -

SDO high Z CSN high

-

Setup time ENABLE to SCK HIGH > VCC-1.2 V

Propagation delay SPI to output

QXX

-

200

-

-

ns

200

-

-

ns

80

-

-

ns

80

-

-

ns

-

100

-

ns

-

100

-

ns

30

-

-

s

-

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).

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

Doc ID 5198 Rev 10

21/29

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