7470/7471/7477/7478 GROUP USER’S MANUAL
Table of contents
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Table of contents
Description .............................................................................................................................. 1-2
Group expansion ................................................................................................................... 1-3
Pin configuration ................................................................................................................. 1-10
1.7.1 Accumulator (A) ........................................................................................................... 1-24
1.7.3 Stack pointer (S) ......................................................................................................... 1-24
Access area .......................................................................................................................... 1-28
Memory allocation ............................................................................................................... 1-30
1.10 I/O pins .................................................................................................................................. 1-35
1.10.1 I/O port ....................................................................................................................... 1-35
1.10.2 Port block diagram .................................................................................................... 1-40
1.10.3 Notes on use ............................................................................................................. 1-45
1.11.3 Interrupt control ......................................................................................................... 1-55
1.11.4 Notes on use ............................................................................................................. 1-57
1.11.5 Related registers ....................................................................................................... 1-59
1.12.5 Notes on use ............................................................................................................. 1-82
1.12.6 Related registers ....................................................................................................... 1-83
1.13A.1 Operation description ............................................................................................. 1-90
1.13A.2 Byte specification mode ......................................................................................... 1-98
1.13A.3 Pins ......................................................................................................................... 1-101