MC68HC812A4 Datasheet, PDF (22/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

List of Figures
Figure
Title
Page
11-4
11-5
11-6
11-7
Loop Divider Register Low (LDVL) . . . . . . . . . . . . . . . . . . . . .171
Reference Divider Register High (RDVH). . . . . . . . . . . . . . . .172
Reference Divider Register Low (RDVL) . . . . . . . . . . . . . . . .172
Clock Control Register (CLKCTL). . . . . . . . . . . . . . . . . . . . . .173
12-1 Timer Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
12-2 I/O Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
12-3 Channel 7 Output Compare/Pulse Accumulator Logic . . . . . .186
12-4 Timer IC/OC Select Register (TIOS) . . . . . . . . . . . . . . . . . . .186
12-5 Timer Compare Force Register (CFORC) . . . . . . . . . . . . . . .187
12-6 Timer Output Compare 7 Mask Register (OC7M) . . . . . . . . .187
12-7 Timer Output Compare 7 Data Register (OC7D) . . . . . . . . . .188
12-8 Timer Counter Register High (TCNTH) . . . . . . . . . . . . . . . . .189
12-9 Timer Counter Register Low (TCNTL) . . . . . . . . . . . . . . . . . .189
12-10 Timer System Control Register (TSCR) . . . . . . . . . . . . . . . . .190
12-11 Fast Clear Flag Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191
12-12 Timer Control Register 1 (TCTL1) . . . . . . . . . . . . . . . . . . . . .192
12-13 Timer Control Register 2 (TCTL2) . . . . . . . . . . . . . . . . . . . . .192
12-14 Timer Control Register 3 (TCTL3) . . . . . . . . . . . . . . . . . . . . .193
12-15 Timer Control Register 4 (TCTL4) . . . . . . . . . . . . . . . . . . . . .193
12-16 Timer Mask 1 Register (TMSK1) . . . . . . . . . . . . . . . . . . . . . .194
12-17 Timer Mask 2 Register (TMSK2) . . . . . . . . . . . . . . . . . . . . . .194
12-18 Timer Flag Register 1 (TFLG1). . . . . . . . . . . . . . . . . . . . . . . .196
12-19 Timer Flag Register 2 (TFLG2). . . . . . . . . . . . . . . . . . . . . . . .196
12-20 Timer Channel Registers (TCxH/L) . . . . . . . . . . . . . . . . . . . .197
12-21 Pulse Accumulator Control Register (PACTL) . . . . . . . . . . . .198
12-22 Pulse Accumulator Flag Register (PAFLG) . . . . . . . . . . . . . .200
12-23 Pulse Accumulator Counter Registers (PACNTH/L). . . . . . . .201
12-24 Timer Test Register (TIMTST) . . . . . . . . . . . . . . . . . . . . . . . .202
12-25 Timer Port Data Register (PORTT) . . . . . . . . . . . . . . . . . . . .206
12-26 Timer Port Data Direction Register (DDRT) . . . . . . . . . . . . . .207
12-27 Data Direction Register for Timer Port (DDRT) . . . . . . . . . . .208
12-28 Example Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209
MC68HC812A4 — Rev. 3.0
22
List of Figures
Advance Information
MOTOROLA