MC68HC11KW1 Datasheet, PDF (11/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

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9.2.7 TCTL3 — Timer control register 3 (Timer 2) ....................................................9-20
9.2.8 TCTL4 — Timer control register 4 (Timer 2) ....................................................9-21
9.2.9 T2MSK — Timer 2 interrupt mask register.......................................................9-22
9.2.10 T2FLG — Timer 2 interrupt flag register ..........................................................9-23
9.3 Timer 3 ..................................................................................................................9-24
9.3.1 T3C4 — Timer 3 channel 4 register .................................................................9-24
9.3.2 T3OC1–T3OC3 — Timer 3 output compare registers .....................................9-26
9.3.3 TCNT3 — Timer 3 counter register..................................................................9-26
9.3.4 TCTL5 — Timer control register 5 (Timer 3) ....................................................9-27
9.3.5 TCTL6 — Timer control register 6 (Timer 3) ....................................................9-27
9.3.6 T3MSK — Timer 3 interrupt mask register.......................................................9-29
9.3.7 T3FLG — Timer 3 interrupt flag register ..........................................................9-30
9.4 Real-time interrupt .................................................................................................9-31
9.4.1 TMSK2 — Timer interrupt mask register 2.......................................................9-31
9.4.2 TFLG2 — Timer interrupt flag register 2 ..........................................................9-32
9.4.3 PACTL — Pulse accumulator control register ..................................................9-33
9.5 Computer operating properly watchdog function ...................................................9-33
9.6 Pulse accumulator .................................................................................................9-33
9.6.1 PACTL — Pulse accumulator control register ..................................................9-35
9.6.2 PACNT — Pulse accumulator count register ...................................................9-36
9.6.3 Pulse accumulator status and interrupt bits .....................................................9-36
9.6.3.1
TMSK2 — Timer interrupt mask 2 register .................................................9-36
9.6.3.2
TFLG2 — Timer interrupt flag 2 register ....................................................9-36
9.7 Pulse-width modulation (PWM) timer ....................................................................9-37
9.7.1 PWM timer block diagram ................................................................................9-38
9.7.2 PWCLK — PWM clock prescaler and 16-bit select register.............................9-38
9.7.2.1
16-bit PWM function ...................................................................................9-38
9.7.2.2
Clock prescaler selection ...........................................................................9-40
9.7.3 PWPOL — PWM timer polarity & clock source select register ........................9-41
9.7.4 PWSCAL — PWM timer prescaler register......................................................9-41
9.7.5 PWEN — PWM timer enable register ..............................................................9-42
9.7.6 PWCNT1–4 — PWM timer counter registers 1 to 4.........................................9-43
9.7.7 PWPER1–4 — PWM timer period registers 1 to 4...........................................9-43
9.7.8 PWDTY1–4 — PWM timer duty cycle registers 1 to 4.....................................9-44
9.7.9 Boundary cases ...............................................................................................9-44
10
ANALOG-TO-DIGITAL CONVERTER
10.1 Conversion process .............................................................................................10-2
10.2 Channel assignments ..........................................................................................10-2
10.3 Single channel operation .....................................................................................10-3
10.3.1 4-conversion, single scan...............................................................................10-4
10.3.2 4-conversion, continuous scan.......................................................................10-4
10.3.3 8-conversion, single scan...............................................................................10-4
MC68HC11KW1
TABLE OF CONTENTS
vii