STMPE2401 datasheet(38/55 Pages) STMICROELECTRONICS

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PWM commands

STMPE2401

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Table 36. Instruction

Instruction

Bit

Timing in 2kHz

4321

RAMP

Prescale

0=16

1=512

Step Time

0 - 63

0 = immediate action

Sign

0=step-

1=step-

down

Increment

1 – 126

Increment value

of 0 is not

allowed.

prescale = 16 :-

Consumes

[(step

time)(1)(increme

nt)] cycles

prescale = 512 :-

Consumes

[(32)(1) (step

time)(1)(increme

nt)] cycles

SMAX

x(2)

127

Consumes 1

cycle

SMIN

x(2)

127

Consumes 1

cycle

GTS

Consumes 1

cycle

BRANCH

Loop Counter to

use

0 - 3

Loop Count

0 – 15

0 = forever

loop

0=absol

ute step

size

1=relativ

e step

size(1)

Step Size

0 – 63(1)

Consumes 1

cycle

Once the loop

count has been

reached, the

loop counter

resets.

END

Interr

upt to

host

Reset

instructi

counter

and

output

level to

zero

RESERVED

Consumes 1

cycle

TRIG

Wait for Trigger

on channel 0 – 2

Continues if all selected triggers

present.

Each bit signifies wait for the

corresponding channel.

Send Trigger

on channel 0 – 2

Continues if no Wait

for Trigger in this

instruction.

(2)

Consumes 1 or

more cycles

reserved

RESERVED

Reserved.

Absolute Branch jumps to the absolute address (relative to address 0x0) using the value of step size. The Relative Branch

jumps in a backward manner relative to the current address location, ie. 1 means jump to the previous instruction location

and 0 means NOP.

Don’t care.

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