R5F71242N50NP datasheet(10/774 Pages) RENESAS

Part #	R5F71242N50NP

Description	Renesas 32-Bit RISC Microcomputer SuperH??RISC engine Family

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Manufacturer	RENESAS [Renesas Technology Corp]

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10 / 774 page

Rev. 4.00 Jul. 25, 2008 Page x of xx

3.4

Address Map ........................................................................................................................ 51

3.5

Initial State in This LSI........................................................................................................ 54

3.6

Note on Changing Operating Mode ..................................................................................... 54

Section 4 Clock Pulse Generator (CPG) ............................................................. 55

4.1

Features................................................................................................................................ 55

4.2

Input/Output Pins ................................................................................................................. 58

4.3

Clock Operating Mode......................................................................................................... 59

4.4

Register Descriptions ...........................................................................................................61

4.4.1

Frequency Control Register (FRQCR) ................................................................... 61

4.4.2

Oscillation Stop Detection Control Register (OSCCR) .......................................... 64

4.5

Changing Frequency ............................................................................................................ 65

4.6

Oscillator.............................................................................................................................. 66

4.6.1

Connecting Crystal Resonator ................................................................................ 66

4.6.2

External Clock Input Method.................................................................................. 67

4.7

Function for Detecting Oscillator Stop ................................................................................ 68

4.8

Usage Notes ......................................................................................................................... 69

4.8.1

Note on Crystal Resonator ...................................................................................... 69

4.8.2

Notes on Board Design ........................................................................................... 69

Section 5 Exception Handling ............................................................................. 71

5.1

Overview.............................................................................................................................. 71

5.1.1

Types of Exception Handling and Priority ............................................................. 71

5.1.2

Exception Handling Operations.............................................................................. 72

5.1.3

Exception Handling Vector Table .......................................................................... 73

5.2

Resets................................................................................................................................... 75

5.2.1

Types of Resets....................................................................................................... 75

5.2.2

Power-On Reset ...................................................................................................... 75

5.2.3

Manual Reset .......................................................................................................... 76

5.3

Address Errors ..................................................................................................................... 77

5.3.1

Address Error Sources ............................................................................................ 77

5.3.2

Address Error Exception Source............................................................................. 78

5.4

Interrupts.............................................................................................................................. 79

5.4.1

Interrupt Sources..................................................................................................... 79

5.4.2

Interrupt Priority ..................................................................................................... 80

5.4.3

Interrupt Exception Handling ................................................................................. 80

5.5

Exceptions Triggered by Instructions .................................................................................. 81

5.5.1

Types of Exceptions Triggered by Instructions ...................................................... 81

5.5.2

Trap Instructions ..................................................................................................... 81

5.5.3

Illegal Slot Instructions........................................................................................... 82

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