7220 Datasheet, PDF (10/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

Table of contents
CHAPTER 6. APPENDIX
6.1 Package outline ..................................................................................................................... 6-2
6.2 Termination of unused pins ............................................................................................... 6-3
6.3 Notes on use ......................................................................................................................... 6-4
6.3.1 Notes on processor status register ............................................................................. 6-4
6.3.2 Notes on decimal operation ......................................................................................... 6-5
6.3.3 Notes on Interrupts ........................................................................................................ 6-5
6.3.4 Notes on serial I/O ........................................................................................................ 6-6
6.3.5 Notes on timer ............................................................................................................... 6-7
6.3.6 Notes on A-D comparator ............................................................................................. 6-8
6.3.7 Note on RESET pin ....................................................................................................... 6-8
6.3.8 Notes on input and output pins ................................................................................... 6-9
6.3.9 Note on JMP instruction ............................................................................................... 6-9
6.3.10 Note on multi-master I²C-BUS interface ................................................................. 6-10
6.3.11 Termination of unused pins ...................................................................................... 6-10
6.4 Counter measures against noise .................................................................................... 6-11
6.4.1 Shortest wiring length ................................................................................................. 6-11
6.4.2 connection of a bypass capacitor across VSS line and VCC line ............................ 6-13
6.4.3 Wiring to analog input pins ........................................................................................ 6-13
6.4.4 Oscillator concerns ...................................................................................................... 6-14
6.4.5 Setup for I/O ports ...................................................................................................... 6-15
6.4.6 Providing of watchdog timer function by software .................................................. 6-16
6.5 Memory assignment ........................................................................................................... 6-17
6.6 SFR assignment .................................................................................................................. 6-20
6.7 Control registers ................................................................................................................. 6-30
6.8 Ports ...................................................................................................................................... 6-51
6.9 Machine instruction table .................................................................................................. 6-53
6.10 Instruction code table ...................................................................................................... 6-63
6.11 Mask ROM ordering method........................................................................................... 6-64
6.12 Mark specification form ................................................................................................... 6-80
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7220 Group User’s Manual