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12.3.2 Output Compare Registers A and B (OCRA and OCRB).................................... 290
12.3.3 Input Capture Registers A to D (ICRA to ICRD) ................................................ 290
12.3.4 Output Compare Registers AR and AF (OCRAR and OCRAF) ......................... 291
12.3.5 Output Compare Register DM (OCRDM) ........................................................... 291
12.3.6 Timer Interrupt Enable Register (TIER) .............................................................. 292
12.3.7 Timer Control/Status Register (TCSR) ................................................................ 293
12.3.8 Timer Control Register (TCR) ............................................................................. 296
12.3.9 Timer Output Compare Control Register (TOCR) .............................................. 297
12.4 Operation........................................................................................................................... 299
12.4.1 Pulse Output......................................................................................................... 299
12.5 Operation Timing.............................................................................................................. 300
12.5.1 FRC Increment Timing ........................................................................................ 300
12.5.2 Output Compare Output Timing .......................................................................... 301
12.5.3 FRC Clear Timing................................................................................................ 301
12.5.4 Input Capture Input Timing ................................................................................. 302
12.5.5 Buffered Input Capture Input Timing .................................................................. 303
12.5.6 Timing of Input Capture Flag (ICF) Setting ........................................................ 304
12.5.7 Timing of Output Compare Flag (OCF) setting................................................... 305
12.5.8 Timing of FRC Overflow Flag Setting ................................................................ 305
12.5.9 Automatic Addition Timing................................................................................. 306
12.5.10 Mask Signal Generation Timing .......................................................................... 307
12.6 Interrupt Sources ............................................................................................................... 308
12.7 Usage Notes ...................................................................................................................... 309
12.7.1 Conflict between FRC Write and Clear ............................................................... 309
12.7.2 Conflict between FRC Write and Increment........................................................ 310
12.7.3 Conflict between OCR Write and Compare-Match ............................................. 311
12.7.4 Switching of Internal Clock and FRC Operation ................................................. 312
13.1 Features ............................................................................................................................. 315
13.2 Input/Output Pins .............................................................................................................. 318
13.3 Register Descriptions ........................................................................................................ 318
13.3.1 Timer Counter (TCNT)........................................................................................ 320
13.3.2 Time Constant Register A (TCORA)................................................................... 320
13.3.3 Time Constant Register B (TCORB) ................................................................... 320
13.3.4 Timer Control Register (TCR) ............................................................................. 321
13.3.5 Timer Control/Status Register (TCSR) ................................................................ 323
13.3.6 Input Capture Register (TICR) ............................................................................ 328
13.3.7 Time Constant Register (TCORC)....................................................................... 328
13.3.8 Input Capture Registers R and F (TICRR and TICRF)........................................ 329
13.3.9 Timer Input Select Register (TISR) ..................................................................... 329
Rev. 3.00 Jan 25, 2006 page xxiv of lii
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