
10.7.2 Note on Cycle Setting .......................................................................................... 246
10.7.3 Contention between TCNT Write and Clear........................................................ 247
10.7.4 Contention between TCNT Write and Increment ................................................ 248
10.7.5 Contention between Buffer Register Write and Compare Match ........................ 249
10.7.6 Contention between TGR Read and Input Capture.............................................. 250
10.7.7 Contention between TGR Write and Input Capture ............................................. 251
10.7.8 Contention between Buffer Register Write and Input Capture ............................ 252
10.7.9 Contention Between TGR Write and Compare Match ........................................ 253
10.7.10 TCNT2 Write and Overflow/Underflow Contention in Cascade Connection ..... 253
10.7.11 Contention between Overflow/Underflow and Counter Clearing........................ 255
10.7.12 Contention between TCNT Write and Overflow/Underflow ............................... 256
10.7.13 Cautions on Carrying Out Buffer Operation of Channel 0 in PWM Mode.......... 256
10.8
MTU Output Pin Initialization .......................................................................................... 257
10.8.1 Operating Modes .................................................................................................. 257
10.8.2 Reset Start Operation............................................................................................ 257
10.8.3 Operation in Case of Re-Setting Due to Error During Operation, Etc................. 257
10.8.4 Overview of Initialization Procedures and Mode Transitions in Case of Error
During Operation, Etc. ......................................................................................... 258
Section 11 Watchdog Timer (WDT).............................................................................. 275
11.1
Overview............................................................................................................................ 275
11.1.1 Features ................................................................................................................ 275
11.1.2 Block Diagram...................................................................................................... 276
11.1.3 Pin Configuration ................................................................................................. 276
11.1.4 Register Configuration ......................................................................................... 277
11.2
Register Descriptions......................................................................................................... 277
11.2.1 Timer Counter (TCNT) ........................................................................................ 277
11.3
Operation ........................................................................................................................... 282
11.3.1 Watchdog Timer Mode ........................................................................................ 282
11.3.2 Interval Timer Mode ............................................................................................ 284
11.3.3 Clearing the Standby Mode.................................................................................. 284
11.3.4 Timing of Setting the Overflow Flag (OVF)........................................................ 285
11.3.5 Timing of Setting the Watchdog Timer Overflow Flag (WOVF)........................ 285
11.4
Notes on Use...................................................................................................................... 286
11.4.1 TCNT Write and Increment Contention............................................................... 286
11.4.2 Changing CKS2 to CKS0 Bit Values ................................................................... 286
11.4.3 Changing between Watchdog Timer/Interval Timer Modes................................ 286
11.4.4 System Reset With
WDTOVF ............................................................................. 287
11.4.5 Internal Reset With the Watchdog Timer ............................................................ 287
Section 12 Serial Communication Interface (SCI) .................................................... 289
12.1
Overview............................................................................................................................ 289
12.1.1 Features ................................................................................................................ 289