M32C8A Datasheet, PDF (9/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

8.1.1 Selecting External Address Bus ......................................................................................................... 50
8.1.2 Selecting External Data Bus ............................................................................................................... 50
8.1.3 Selecting Separate/Multiplexed Bus ................................................................................................... 50
8.2 Bus Control ............................................................................................................................................. 52
8.2.1 Address Bus and Data Bus ................................................................................................................. 52
8.2.2 Chip-Select Output ............................................................................................................................. 52
8.2.3 Read/Write Output Signals ................................................................................................................. 54
8.2.4 Bus Timing ......................................................................................................................................... 55
8.2.5 ALE Output ........................................................................................................................................ 63
8.2.6 RDY Input ............................................................................................................................................................ 63
8.2.7 HOLD Input ........................................................................................................................................ 64
8.2.8 External Bus States when Accessing Internal Space .......................................................................... 65
8.2.9 BCLK Output ..................................................................................................................................... 65
8.3 Page Mode Control Function .................................................................................................................. 66
9. Clock Generation Circuits ............................................................................................................. 69
9.1 Types of the Clock Generation Circuit ................................................................................................... 69
9.1.1 Main Clock ......................................................................................................................................... 78
9.1.2 Sub Clock ........................................................................................................................................... 79
9.1.3 On-Chip Oscillator Clock ................................................................................................................... 80
9.1.4 PLL Clock ........................................................................................................................................... 81
9.2 CPU Clock and BCLK ............................................................................................................................ 83
9.3 Peripheral Function Clock ....................................................................................................................... 83
9.3.1 f1, f8, f32, and f2n .............................................................................................................................. 83
9.3.2 fAD ..................................................................................................................................................... 83
9.3.3 fC32 .................................................................................................................................................... 83
9.4 Clock Output Function ............................................................................................................................ 84
9.5 Power Consumption Control ................................................................................................................... 85
9.5.1 CPU operating mode .......................................................................................................................... 85
9.5.2 Wait Mode .......................................................................................................................................... 87
9.5.3 Stop Mode ........................................................................................................................................... 90
9.6 System Clock Protect Function ............................................................................................................... 93
10. Protection ...................................................................................................................................... 94
11. Interrupts ....................................................................................................................................... 95
11.1 Types of Interrupts .................................................................................................................................. 95
11.2 Software Interrupts .................................................................................................................................. 96
11.2.1 Undefined Instruction Interrupt .......................................................................................................... 96
11.2.2 Overflow Interrupt .............................................................................................................................. 96
11.2.3 BRK Interrupt ..................................................................................................................................... 96
11.2.4 BRK2 Interrupt ................................................................................................................................... 96
11.2.5 INT Instruction Interrupt .................................................................................................................... 96
11.3 Hardware Interrupts ................................................................................................................................ 97
11.3.1 Special Interrupts ................................................................................................................................ 97
11.3.2 DMACII Transfer Complete Interrupt ............................................................................................... 97
11.3.3 Peripheral Function Interrupt .............................................................................................................. 97
11.4 High-Speed Interrupt ............................................................................................................................... 98
11.5 Interrupts and Interrupt Vectors .............................................................................................................. 99
11.5.1 Fixed Vector Table ............................................................................................................................. 99
A-2