LPC11C00 Series PWM channels

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LPC11C00 Series PWM channels

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lpcware
NXP Employee
NXP Employee
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...*

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lpcware
NXP Employee
NXP Employee
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!
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lpcware
NXP Employee
NXP Employee
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)
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