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3850 Group (Spec. H) User’s Manual
Table of contents
DESCRIPTION ................................................................................................................................1-2
APPLICATION ................................................................................................................................1-2
PIN CONFIGURATION .................................................................................................................. 1-2
FUNCTIONAL BLOCK .................................................................................................................. 1-3
PIN DESCRIPTION ........................................................................................................................ 1-4
GROUP EXPANSION .................................................................................................................... 1-6
Memory Type ............................................................................................................................ 1-6
Memory Size ............................................................................................................................. 1-6
Packages ................................................................................................................................... 1-6
FUNCTIONAL DESCRIPTION ...................................................................................................... 1-8
Memory .................................................................................................................................... 1-12
I/O Ports .................................................................................................................................. 1-14
Interrupts ................................................................................................................................. 1-18
Timers ...................................................................................................................................... 1-21
Serial I/O ................................................................................................................................. 1-23
A-D Converter ......................................................................................................................... 1-32
Watchdog Timer ..................................................................................................................... 1-33
Reset Circuit ........................................................................................................................... 1-34
Clock Generating Circuit ....................................................................................................... 1-36
ROM PROGRAMMING METHOD .............................................................................................. 1-74
2.1.1 Memory map ................................................................................................................... 2-2
2.1.2 Relevant registers .......................................................................................................... 2-2
2.1.4 Notes on I/O port ........................................................................................................... 2-4
2.2 Interrupt ................................................................................................................................... 2-6
2.2.1 Memory map ................................................................................................................... 2-6
2.2.2 Relevant registers .......................................................................................................... 2-7
2.2.3 Interrupt source ............................................................................................................ 2-10
2.2.5 Interrupt control ............................................................................................................ 2-14
2.2.6 INT interrupt .................................................................................................................. 2-17
2.2.7 Notes on interrupts ...................................................................................................... 2-18