LPC Microcontrollers中的主题 Re: LPC11C00 Series PWM channels

LPC11C00 Series PWM channels

lpcware — Wed, 15 Jun 2016 19:47:51 GMT

Content originally posted in LPCWare by mkwired on Mon Feb 24 13:30:28 MST 2014
I'm hoping someone can explain how the LPC11C24 part can have 11 PWM channels (according to the Parametric search on NXP.com). I've read the user manual and I can only come up with 9 because each timer needs one of its match registers to set the PWM cycle length. Is the Parametric search wrong or is it me?

I/O PIN       MATCH REG.   *=PWM cycle length register

CT16B0_MAT0...TMR16B0MR0
CT16B0_MAT1...TMR16B0MR1
CT16B0_MAT2...TMR16B0MR2...*
..............TMR16B1MR0...*
CT16B1_MAT1...TMR16B1MR1
..............TMR16B1MR2
..............TMR16B1MR3
CT32B0_MAT0...TMR32B0MR0
CT32B0_MAT1...TMR32B0MR1
CT32B0_MAT2...TMR32B0MR2
CT32B0_MAT3...TMR32B0MR3...*
CT32B1_MAT0...TMR32B1MR0
CT32B1_MAT1...TMR32B1MR1
CT32B1_MAT2...TMR32B1MR2
CT32B1_MAT3...TMR32B1MR3...*

Re: LPC11C00 Series PWM channels

lpcware — Wed, 15 Jun 2016 19:47:52 GMT

Content originally posted in LPCWare by MarcVonWindscooting on Mon Mar 17 09:29:54 MST 2014
I read the manual as follows: MR0..MR3 exist for every timer.
So you can use TMR16B0MR3 as CR16B0 cycle length. My result is 10 PWMs. !?
3 PWMs for each timer (4 total) minus those not pinned out (2 of CT16B1)

Re: LPC11C00 Series PWM channels

lpcware — Wed, 15 Jun 2016 19:47:52 GMT

Content originally posted in LPCWare by mkwired on Tue Mar 18 07:58:30 MST 2014
Thank you for looking into this for me. I don't know how I missed that register. Thanks!