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HRPWM with Fine Edge

Placement

dsPIC33/PIC24 Family Reference Manual

Introduction

Note: This family reference manual section is meant to serve as a complement to device data sheets. Depending on

the device variant, this manual section may not apply to all dsPIC33 devices. Please consult the note at the

beginning of the chapter in the specific device data sheet to check whether this document supports the device you

are using.

Device data sheets and family reference manual sections are available for download from the Microchip Worldwide

Website at: www.microchip.com.

This document describes the features and use of the High-Resolution Pulse-Width Modulated (PWM) with Fine Edge

Placement. This flexible module provides features to support many types of Motor Control (MC) and Power Control

(PC) applications, including:

• AC-to-DC Converters

• DC-to-DC Converters

• AC and DC Motor Control: Brushed DC, BLDC, PMSM, ACIM, SRM, Stepper, etc.

• Inverters

• Battery Chargers

• Digital Lighting

• Power Factor Correction (PFC)

High-Level Features

• Up to Eight Independent PWM Generators, each with Dual Outputs

• Operating modes:

– Independent Edge PWM mode

– Variable Phase PWM mode

– Independent Edge PWM mode, Dual Output

– Center-Aligned PWM mode

– Double Update Center-Aligned PWM mode

– Dual Edge Center-Aligned PWM mode

• Output modes:

– Complementary

– Independent

– Push-Pull

• Dead-Time Generator

• Dead-Time Compensation

• Leading-Edge Blanking (LEB)

• Output Override for Fault Handling

• Flexible Period/Duty Cycle Updating Options

• PWM Control Inputs (PCI) for PWM Pin Overrides and External PWM Synchronization

• Advanced Triggering Options

• Combinatorial Logic Output

• PWM Event Outputs

HRPWM with Fine Edge Placement

Table of Contents

Introduction.....................................................................................................................................................1

High-Level Features....................................................................................................................................... 1

1. Registers................................................................................................................................................. 5

2. Register Maps......................................................................................................................................... 6

2.1. Common Functions Register Map................................................................................................7

2.2. PWM Generator Register Map................................................................................................... 21

3. Architecture Overview...........................................................................................................................51

4. Operation.............................................................................................................................................. 54

4.1. PWM Clocking............................................................................................................................54

4.2. PWM Generator (PG) Features..................................................................................................59

4.3. Common Features......................................................................................................................95

4.4. Lock and Write Restrictions......................................................................................................100

5. Application Examples..........................................................................................................................105

5.1. Six-Step Commutation of Three-Phase BLDC Motor...............................................................105

5.2. Three-Phase Sinusoidal Control of PMSM/ACIM Motors.........................................................114

5.3. Simple Complementary PWM Output.......................................................................................117

5.4. Cycle-by-Cycle Current Limit Mode..........................................................................................118

5.5. External Period Reset Mode.................................................................................................... 120

6. Interrupts............................................................................................................................................. 123

7. Operation in Power-Saving Modes..................................................................................................... 124

7.1. Operation in Sleep Mode..........................................................................................................124

7.2. Operation in Idle Mode............................................................................................................. 124

8. Related Application Notes...................................................................................................................125

9. Revision History.................................................................................................................................. 126

9.1. Revision A (August 2017).........................................................................................................126

9.2. Revision B (February 2018)..................................................................................................... 126

9.3. Revision C (February 2019)..................................................................................................... 126

9.4. Revision D (December 2020)................................................................................................... 126

The Microchip Website...............................................................................................................................128

Product Change Notification Service..........................................................................................................128

Customer Support...................................................................................................................................... 128

Microchip Devices Code Protection Feature..............................................................................................128

Legal Notice............................................................................................................................................... 129

Trademarks................................................................................................................................................ 129

Quality Management System..................................................................................................................... 130

HRPWM with Fine Edge Placement

2.1.1 PWM Clock Control Register

Name: PCLKCON

Legend: C = Clearable bit

Bit 15 14 13 12 11 10 9 8

HRRDY HRERR LOCK

Access R R/C R/W

Reset 0 0 0

Bit 7 6 5 4 3 2 1 0

DIVSEL[1:0] MCLKSEL[1:0]

Access R/W R/W R/W R/W

Reset 0 0 0 0

Bit 15 – HRRDY High-Resolution Ready

Note: This bit is not present on all devices. Refer to the device-specific data sheet for availability.

Value Description

1The high-resolution circuitry is ready

0The high-resolution circuitry is not ready

Bit 14 – HRERR High-Resolution Error(1,2)

Notes:

1. This bit is not present on all devices. Refer to the device-specific data sheet for availability.

2. User software may write a ‘ ’ to this location to request a reset of the High-Resolution block when HRRDY = .0 1

Value Description

1An error has occurred; PWM signals will have limited resolution

0No error has occurred; PWM signals will have full resolution when HRRDY = 1

Bit 8 – LOCK Lock

Note: A device-specific unlock sequence must be performed before this bit can be cleared. Refer to the device data

sheet for the unlock sequence.

Value Description

1Write-protected registers and bits are locked

0Write-protected registers and bits are unlocked

Bits 5:4 – DIVSEL[1:0] PWM Clock Divider Selection

Value Description

11 Divide ratio is 1:16

10 Divide ratio is 1:8

01 Divide ratio is 1:4

00 Divide ratio is 1:2

Bits 1:0 – MCLKSEL[1:0] PWM Master Clock Selection

Clock sources are device-specific. Refer to the device data sheet for selections.

Note: Do not change the MCLKSEL[1:0] bits while ON (PGxCONL[15]) = .1

HRPWM with Fine Edge Placement

2.1.8 Combinational Trigger Register Low

Name: CMBTRIGL

Bit 15 14 13 12 11 10 9 8

Access

Reset

Bit 7 6 5 4 3 2 1 0

CTA8EN CTA7EN CTA6EN CTA5EN CTA4EN CTA3EN CTA2EN CTA1EN

Access R/W R/W R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0 0 0

Bit 7 – CTA8EN Enable Trigger Output from PWM Generator #8 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 6 – CTA7EN Enable Trigger Output from PWM Generator #7 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 5 – CTA6EN Enable Trigger Output from PWM Generator #6 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 4 – CTA5EN Enable Trigger Output from PWM Generator #5 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 3 – CTA4EN Enable Trigger Output from PWM Generator #4 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 2 – CTA3EN Enable Trigger Output from PWM Generator #3 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 1 – CTA2EN Enable Trigger Output from PWM Generator #2 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

Bit 0 – CTA1EN Enable Trigger Output from PWM Generator #1 as Source for Combinational Trigger A

Value Description

1Enables specified trigger signal to be OR’d into the Combinatorial Trigger A signal

0Disabled

HRPWM with Fine Edge Placement

2.1.11 PWM Event Output Control Register y

Name: PWMEVTy

Note: ‘y’ denotes a common instance (A-F); the number of the available combinatorial PWM logic is

device-dependent. Refer to the device data sheet for availability.

Bit 15 14 13 12 11 10 9 8

EVTyOEN EVTyPOL EVTySTRD EVTySYNC

Access R/W R/W R/W R/W

Reset 0 0 0 0

Bit 7 6 5 4 3 2 1 0

EVTySEL[3:0] EVTyPGS[2:0]

Access R/W R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0 0

Bit 15 – EVTyOEN PWM Event Output Enable

Value Description

1Event output signal is output on the PWMEy pin

0Event output signal is internal only

Bit 14 – EVTyPOL PWM Event Output Polarity

Value Description

1Event output signal is active-low

0Event output signal is active-high

Bit 13 – EVTySTRD PWM Event Output Stretch Disable

Note: The event signal is stretched using peripheral_clk because different PWM Generators may be operating from

different clock sources.

Value Description

1Event output signal pulse width is not stretched

0Event output signal is stretched to eight PWM clock cycles minimum

Bit 12 – EVTySYNC PWM Event Output Sync

Event output signal pulse will be synchronized to peripheral_clk.

Value Description

1Event output signal is synchronized to the system clock

0Event output is not synchronized to the system clock

Bits 7:4 – EVTySEL[3:0] PWM Event Selection

Note: This is the PWM Generator output signal prior to Output mode logic and any output override logic.

Value Description

1111 High-resolution error event signal

1110-1010 Reserved

1001 ADC Trigger 2 signal

1000 ADC Trigger 1 signal

0111 STEER signal (available in Push-Pull Output modes only)

0110 CAHALF signal (available in Center-Aligned modes only)

0101 PCI Fault active output signal

0100 PCI current limit active output signal

0011 PCI feed-forward active output signal

0010 PCI Sync active output signal

0001 PWM Generator output signal

(1)

0000 Source is selected by the [2:0] bitsPGTRGSEL

HRPWM with Fine Edge Placement

2.2 PWM Generator Register Map

Legend: x = PWM Generator #; y = F, CL, FF or S.

Name Bit Pos. 7 6 5 4 3 2 1 0

Reserved

PGxCONL 7:0 HREN CLKSEL[1:0] MODSEL[2:0]

15:8 ON TRGCNT[2:0]

PGxCONH 7:0 Reserved TRGMOD SOCS[3:0]

15:8 MDCSEL MPERSEL MPHSEL MSTEN UPDMOD[2:0]

PGxSTAT 7:0 TRSET TRCLR CAP UPDATE UPDREQ STEER CAHALF TRIG

15:8 SEVT FLTEVT CLEVT FFEVT SACT FLTACT CLACT FFACT

PGxIOCONL 7:0 FLTDAT[1:0] CLDAT[1:0] FFDAT[1:0] DBDAT[1:0]

15:8 CLMOD SWAP OVRENH OVRENL OVRDAT[1:0] OSYNC[1:0]

PGxIOCONH 7:0 PMOD[1:0] PENH PENL POLH POLL

15:8 CAPSRC[2:0] DTCMPSEL

PGxEVTL 7:0 UPDTRG[1:0] PGTRGSEL[2:0]

15:8 ADTR1PS[4:0] ADTR1EN3 ADTR1EN2 ADTR1EN1

PGxEVTH 7:0 ADTR2EN3 ADTR2EN2 ADTR2EN1 ADTR1OFS[4:0]

15:8 FLTIEN CLIEN FFIEN SIEN IEVTSEL[1:0]

PGxyPCIL 7:0 SWTERM PSYNC PPS PSS[4:0]

15:8 TSYNCDIS TERM[2:0] AQPS AQSS[2:0]

PGxyPCIH 7:0 SWPCI SWPCIM[1:0] LATMOD TQPS TQSS[2:0]

15:8 BPEN BPSEL[2:0] ACP[2:0]

Reserved

PGxLEBL 7:0 LEB[10:6] [2:0]

15:8 LEB[18:11]

PGxLEBH 7:0 PHR PHF PLR PLF

15:8 PWMPCI[2:0]

PGxPHASE 7:0 PGxPHASE[7:0]

15:8 PGxPHASE[15:8]

Reserved

PGxDC 7:0 PGxDC[7:0]

15:8 PGxDC[15:8]

PGxDCA 7:0 PGxDCA[7:0]

15:8

PGxPER 7:0 PGxPER[7:0]

15:8 PGxPER[15:8]

PGxTRIGA 7:0 PGxTRIGA[7:0]

15:8 PGxTRIGA[15:8]

PGxTRIGB 7:0 PGxTRIGB[7:0]

15:8 PGxTRIGB[15:8]

PGxTRIGC 7:0 PGxTRIGC[7:0]

15:8 PGxTRIGC[15:8]

PGxDTL 7:0 DTL[7:0]

15:8 DTL[13:8]

PGxDTH 7:0 DTH[7:0]

15:8 DTH[13:8]

PGxCAP 7:0 PGxCAP[6:0]

15:8 PGxCAP[14:7]

HRPWM with Fine Edge Placement

2.2.1 PWM Generator x Control Register Low

Name: PGxCONL

Bit 15 14 13 12 11 10 9 8

ON TRGCNT[2:0]

Access R/W R/W R/W R/W

Reset 0 0 0 0

Bit 7 6 5 4 3 2 1 0

HREN CLKSEL[1:0] MODSEL[2:0]

Access R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0

Bit 15 – ON PWM Generator x Enable

Value Description

1PWM Generator is enabled

0PWM Generator is not enabled

Bits 10:8 – TRGCNT[2:0] PWM Generator x Trigger Count Select

Value Description

111 PWM Generator produces 8 PWM cycles after triggered

110 PWM Generator produces 7 PWM cycles after triggered

101 PWM Generator produces 6 PWM cycles after triggered

100 PWM Generator produces 5 PWM cycles after triggered

011 PWM Generator produces 4 PWM cycles after triggered

010 PWM Generator produces 3 PWM cycles after triggered

001 PWM Generator produces 2 PWM cycles after triggered

000 PWM Generator produces 1 PWM cycle after triggered

Bit 7 – HREN PWM Generator x High-Resolution Enable

Note: This bit is not present on all devices. Refer to the device-specific data sheet for availability. When High-

Resolution mode is not available, this bit will read as ‘ ’.0

Value Description

1PWM Generator x operates in High-Resolution mode

0PWM Generator x operates in Standard Resolution mode

Bits 4:3 – CLKSEL[1:0] Clock Selection(1)

Notes:

1. Do not change the CLKSEL[1:0] bits while ON (PGxCONL[15]) = .1

2. The PWM Generator time base operates from the frequency scaling circuit clock, effectively scaling the duty

cycle and period of the PWM Generator output.

3. This clock source should not be used when HREN (PGxCONL[7]) = .1

Value Description

11 PWM Generator uses the master clock scaled by the frequency scaling circuit

(2,3)

10 PWM Generator uses the master clock divided by the clock divider circuit

(2)

01 PWM Generator uses the master clock selected by the MCLKSEL[1:0] (PCLKCON[1:0]) control bits

00 No clock selected, PWM Generator is in the lowest power state (default)

Bits 2:0 – MODSEL[2:0] PWM Generator x Mode Selection

Value Description

111 Dual Edge Center-Aligned PWM mode (interrupt/register update twice per cycle)

110 Dual Edge Center-Aligned PWM mode (interrupt/register update once per cycle)

101 Double Update Center-Aligned PWM mode

HRPWM with Fine Edge Placement

Value Description

1Output pin is active-low

0Output pin is active-high

HRPWM with Fine Edge Placement

2.2.6 PWM Generator x Event Register Low

Name: PGxEVTL

Bit 15 14 13 12 11 10 9 8

ADTR1PS[4:0] ADTR1EN3 ADTR1EN2 ADTR1EN1

Access R/W R/W R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0 0 0

Bit 7 6 5 4 3 2 1 0

UPDTRG[1:0] PGTRGSEL[2:0]

Access R/W R/W R/W R/W R/W

Reset 0 0 0 0 0

Bits 15:11 – ADTR1PS[4:0] ADC Trigger 1 Postscaler Selection

Value Description

11111 1:32

. . . . . .

00010 1:3

00001 1:2

00000 1:1

Bit 10 – ADTR1EN3 ADC Trigger 1 Source is PGxTRIGC Compare Event Enable

Value Description

1PGxTRIGC register compare event is enabled as trigger source for ADC Trigger 1

0PGxTRIGC register compare event is disabled as trigger source for ADC Trigger 1

Bit 9 – ADTR1EN2 ADC Trigger 1 Source is PGxTRIGB Compare Event Enable

Value Description

1PGxTRIGB register compare event is enabled as trigger source for ADC Trigger 1

0PGxTRIGB register compare event is disabled as trigger source for ADC Trigger 1

Bit 8 – ADTR1EN1 ADC Trigger 1 Source is PGxTRIGA Compare Event Enable

Value Description

1PGxTRIGA register compare event is enabled as trigger source for ADC Trigger 1

0PGxTRIGA register compare event is disabled as trigger source for ADC Trigger 1

Bits 4:3 – UPDTRG[1:0] Update Trigger Select

Value Description

11 A write of the PGxTRIGA register automatically sets the UPDREQ bit

10 A write of the PGxPHASE register automatically sets the UPDREQ bit

01 A write of the PGxDC register automatically sets the UPDREQ bit

00 User must set the bit (PGxSTAT[3]) manuallyUPDREQ

Bits 2:0 – PGTRGSEL[2:0] PWM Generator Trigger Output Selection

Note: These events are derived from the internal PWM Generator time base comparison events.

Value Description

111 Reserved

110 Reserved

101 Reserved

100 Reserved

011 PGxTRIGC compare event is the PWM Generator trigger

010 PGxTRIGB compare event is the PWM Generator trigger

001 PGxTRIGA compare event is the PWM Generator trigger

000 EOC event is the PWM Generator trigger

HRPWM with Fine Edge Placement

2.2.7 PWM Generator x Event Register High

Name: PGxEVTH

Bit 15 14 13 12 11 10 9 8

FLTIEN CLIEN FFIEN SIEN IEVTSEL[1:0]

Access R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0

Bit 7 6 5 4 3 2 1 0

ADTR2EN3 ADTR2EN2 ADTR2EN1 ADTR1OFS[4:0]

Access R/W R/W R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0 0 0

Bit 15 – FLTIEN PCI Fault Interrupt Enable

Note: An interrupt is only generated on the rising edge of the PCI Fault active signal.

Value Description

1Fault interrupt is enabled

0Fault interrupt is disabled

Bit 14 – CLIEN PCI Current Limit Interrupt Enable

Note: An interrupt is only generated on the rising edge of the PCI current limit active signal.

Value Description

1Current limit interrupt is enabled

0Current limit interrupt is disabled

Bit 13 – FFIEN PCI Feed-Forward Interrupt Enable

Note: An interrupt is only generated on the rising edge of the PCI feed-forward active signal.

Value Description

1Feed-forward interrupt is enabled

0Feed-forward interrupt is disabled

Bit 12 – SIEN PCI Sync Interrupt Enable

Note: An interrupt is only generated on the rising edge of the PCI Sync active signal.

Value Description

1Sync interrupt is enabled

0Sync interrupt is disabled

Bits 9:8 – IEVTSEL[1:0] Interrupt Event Selection

Value Description

11 Time base interrupts are disabled (Sync, Fault, current limit and feed-forward events can be

independently enabled)

10 Interrupts CPU at ADC Trigger 1 event

01 Interrupts CPU at TRIGA compare event

00 Interrupts CPU at EOC

Bit 7 – ADTR2EN3 ADC Trigger 2 Source is PGxTRIGC Compare Event Enable

Value Description

1PGxTRIGC register compare event is enabled as trigger source for ADC Trigger 2

0PGxTRIGC register compare event is disabled as trigger source for ADC Trigger 2

Bit 6 – ADTR2EN2 ADC Trigger 2 Source is PGxTRIGB Compare Event Enable

Value Description

1PGxTRIGB register compare event is enabled as trigger source for ADC Trigger 2

HRPWM with Fine Edge Placement

Produktspecifikationer

Varumärke:	Microchip
Kategori:	Inte kategoriserad
Modell:	dsPIC33CK32MP103

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