7641 datasheet(7/385 Pages) RENESAS

7 / 385 page

Rev.2.00

Aug 28, 2006

page 3 of 13

7641 Group

REJ09B0336-0200

2.12 Clock generating circuit ................................................................................................... 135

2.12.1 Memory map ................................................................................................................ 135

2.12.2 Related registers ......................................................................................................... 136

2.12.3 Stop mode .................................................................................................................... 139

2.12.4 Wait mode .................................................................................................................... 140

2.12.5 Clock generating circuit application examples ........................................................ 141

CHAPTER 3 APPENDIX

3.1 Electrical characteristics ........................................................................................................ 2

3.1.1 Absolute maximum ratings ............................................................................................... 2

3.1.2 Recommended operating conditions (In Vcc = 5 V) .................................................... 3

3.1.3 Electrical characteristics (In Vcc = 5 V) ........................................................................ 4

3.1.4 Recommended Operating Conditions (In Vcc = 3 V) ................................................ 10

3.1.5 Electrical Characteristics (In Vcc = 3 V) ..................................................................... 11

3.2 Standard characteristics ....................................................................................................... 23

3.2.1 Power source current standard characteristics ........................................................... 23

3.2.2 Port standard characteristics ......................................................................................... 24

3.3 Notes on use ........................................................................................................................... 27

3.3.1 Notes on interrupts ......................................................................................................... 27

3.3.2 Notes on serial I/O ......................................................................................................... 28

3.3.3 Notes on UART ............................................................................................................... 29

3.3.4 Notes on DMAC .............................................................................................................. 31

3.3.5 Notes on USB .................................................................................................................. 32

3.3.6 Notes on frequency synthesizer .................................................................................... 36

3.3.7 Notes on master CPU bus interface ............................................................................ 36

3.3.8 Notes on external devices connection ......................................................................... 36

3.3.9 Notes on timer ................................................................................................................. 38

3.3.10 Notes on Stop mode .................................................................................................... 39

3.3.11 Notes on reset ............................................................................................................... 39

3.3.12 Notes on I/O port .......................................................................................................... 39

3.3.13 Notes on programming ................................................................................................. 40

3.3.14 Termination of unused pins ......................................................................................... 42

3.3.15 Notes on CPU rewrite mode for flash memory version .......................................... 43

3.4 Countermeasures against noise ......................................................................................... 44

3.4.1 Shortest wiring length ..................................................................................................... 44

3.4.2 Connection of bypass capacitor across Vss line and Vcc line ................................ 45

3.4.3 Oscillator concerns .......................................................................................................... 46

3.4.4 Setup for I/O ports .......................................................................................................... 47

3.4.5 Providing of watchdog timer function by software ..................................................... 48

3.5 Control registers ..................................................................................................................... 49

3.6 Package outline ...................................................................................................................... 92

3.7 Machine instructions ............................................................................................................. 94

3.8 List of instruction code ...................................................................................................... 105

3.9 SFR memory map ................................................................................................................. 106

3.10 Pin configuration ................................................................................................................ 107

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