Advance Information
MC68HC908MR16/MC68HC908MR32
—
Rev. 5.0
22
List of Figures
MOTOROLA
List of Figures
Figure
Title
Page
7-10
7-11
7-12
7-13
7-14
7-15
7-16
Interrupt Recognition Example. . . . . . . . . . . . . . . . . . . . . .101
Wait Mode Entry Timing. . . . . . . . . . . . . . . . . . . . . . . . . . .103
Wait Recovery from Interrupt . . . . . . . . . . . . . . . . . . . . . . .103
Wait Recovery from Internal Reset . . . . . . . . . . . . . . . . . .103
SIM Break Status Register (SBSR) . . . . . . . . . . . . . . . . . .104
SIM Reset Status Register (SRSR) . . . . . . . . . . . . . . . . . .106
SIM Break Flag Control Register (SBFCR) . . . . . . . . . . . .107
8-1
8-2
8-3
8-4
8-5
8-6
8-7
CGM Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
CGM I/O Register Summary . . . . . . . . . . . . . . . . . . . . . . .113
CGM External Connections . . . . . . . . . . . . . . . . . . . . . . . .120
CGM I/O Register Summary . . . . . . . . . . . . . . . . . . . . . . .123
PLL Control Register (PCTL) . . . . . . . . . . . . . . . . . . . . . . .124
PLL Bandwidth Control Register (PBWC) . . . . . . . . . . . . .126
PLL Programming Register (PPG). . . . . . . . . . . . . . . . . . .128
9-1
9-2
9-3
9-4
9-5
9-6
9-7
9-8
9-9
9-10
9-11
9-12
9-13
9-14
9-15
9-16
9-17
9-18
9-19
9-20
9-21
9-22
PWM Module Block Diagram . . . . . . . . . . . . . . . . . . . . . . .137
Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Center-Aligned PWM (Positive Polarity). . . . . . . . . . . . . . .141
Edge-Aligned PWM (Positive Polarity). . . . . . . . . . . . . . . .142
Reload Frequency Change . . . . . . . . . . . . . . . . . . . . . . . .144
PWM Interrupt Requests . . . . . . . . . . . . . . . . . . . . . . . . . .144
Center-Aligned PWM Value Loading . . . . . . . . . . . . . . . . .145
Center-Aligned Loading of Modulus. . . . . . . . . . . . . . . . . .145
Edge-Aligned PWM Value Loading . . . . . . . . . . . . . . . . . .146
Edge-Aligned Modulus Loading . . . . . . . . . . . . . . . . . . . . .146
Complementary Pairing . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Typical AC Motor Drive . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Dead-Time Generators. . . . . . . . . . . . . . . . . . . . . . . . . . . .150
Effects of Dead-Time Insertion. . . . . . . . . . . . . . . . . . . . . .151
Dead-Time at Duty Cycle Boundaries . . . . . . . . . . . . . . . .152
Dead-Time and Small Pulse Widths. . . . . . . . . . . . . . . . . .152
Ideal Complementary Operation (Dead-Time = 0). . . . . . .154
Current Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155
Top/Bottom Correction for PWMs 1 and 2 . . . . . . . . . . . . .156
PWM Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
PWM Output Control Register (PWMOUT) . . . . . . . . . . . .158
Dead-Time Insertion During OUTCTL = 1 . . . . . . . . . . . . .159