Table Of Contents - Renesas M16C/26A Series Hardware Manual

5. Reset ________________________________________ 26
5.1 Hardware Reset .......................................................................................................... 26
5.1.1 Hardware Reset 1 ................................................................................................ 26
5.1.2 Hardware Reset 2 ................................................................................................ 26
5.2 Software Reset ............................................................................................................ 27
5.3 Watchdog Timer Reset ................................................................................................ 27
5.4 Oscillation Stop Detection Reset ................................................................................. 27
5.5 Voltage Detection Circuit ............................................................................................. 29
5.5.1 Voltage Down Detection Interrupt ....................................................................... 32
5.5.2 Limitations on Exiting Stop Mode ........................................................................ 34
5.5.3 Limitations on Exiting Wait Mode ........................................................................ 34
6. Processor Mode _______________________________ 35
7. Clock Generation Circuit _________________________ 38
7.1 Main Clock .................................................................................................................. 45
7.2 Sub Clock .................................................................................................................... 46
7.3 On-chip Oscillator Clock .............................................................................................. 47
7.4 PLL Clock .................................................................................................................... 47
7.5 CPU Clock and Peripheral Function Clock ................................................................. 49
7.5.1 CPU Clock ........................................................................................................... 49
7.5.2 Peripheral Function Clock (f
7.5.3 ClockOutput Function .......................................................................................... 49
7.6 Power Control ............................................................................................................. 50
7.6.1 Normal Operation Mode ....................................................................................... 50
7.6.2 Wait Mode ............................................................................................................ 51
7.6.3 Stop Mode ........................................................................................................... 53
7.7 System Clock Protective Function .............................................................................. 57
7.8 Oscillation Stop and Re-oscillation Detect Function ................................................... 57
7.8.1 Operation When the CM27 bit is set to "0" (Oscillation Stop Detection Reset) ... 58
7.8.2 Operation When the CM27 bit is set to "1"
7.8.3 How to Use Oscillation Stop and Re-oscillation Detect Function ......................... 59
8. Protection ____________________________________ 60
9. Interrupt ______________________________________ 61
9.1 Type of Interrupts ........................................................................................................ 61
9.1.1 Software Interrupts ............................................................................................... 62
9.1.2 Hardware Interrupts ............................................................................................. 63
A-2
, f , f
1 2
(Oscillation Stop and Re-oscillation Detect Interrupt) .................. 58
, f , f , f , f
8 32 1SIO 2SIO
, f , f , f
8SIO 32SIO AD C32
) ....... 49