i
38B5 Group User’s Manual
Table of contents
Table of contents
CHAPTER 1 HARDWARE
DESCRIPTION ................................................................................................................................ 1-2
FEATURES.................................................................................................................................... 1-2
APPLICATION ................................................................................................................................ 1-2
PIN CONFIGURATION .................................................................................................................. 1-2
FUNCTIONAL BLOCK .................................................................................................................. 1-3
PIN DESCRIPTION ........................................................................................................................1-4
PART NUMBERING....................................................................................................................... 1-6
GROUP EXPANSION .................................................................................................................... 1-7
Memory Type ............................................................................................................................1-7
Memory Size ............................................................................................................................. 1-7
Package .....................................................................................................................................1-7
FUNCTIONAL DESCRIPTION ......................................................................................................1-8
Central Processing Unit (CPU) .............................................................................................. 1-8
Memory ....................................................................................................................................1-12
I/O Ports ..................................................................................................................................1-14
Interrupts .................................................................................................................................1-20
Timers ......................................................................................................................................1-23
Serial I/O .................................................................................................................................1-28
FLD Controller ........................................................................................................................1-40
A-D Converter.........................................................................................................................1-52
Pulse Width Modulation (PWM) ...........................................................................................1-53
Interrupt Interval Determination Function............................................................................1-56
Watchdog Timer .....................................................................................................................1-58
Buzzer Output Circucit ..........................................................................................................1-59
Reset Circuit ...........................................................................................................................1-60
Clock Generating Circuit .......................................................................................................1-62
NOTES ON PROGRAMMING.....................................................................................................1-65
NOTES ON USE ..........................................................................................................................1-65
DATA REQUIRED FOR MASK ORDERS ................................................................................1-66
DATA REQUIRED FOR ROM WRITING ORDERS.................................................................1-66
ROM PROGRAMMING METHOD ..............................................................................................1-66
MASK OPTION OF PULL-DOWN RESISTOR.........................................................................1-67
FUNCTIONAL DESCRIPTION SUPPLEMENT .........................................................................1-69
CHAPTER 2 APPLICATION
2.1 I/O port.....................................................................................................................................2-2
2.1.1 Memory assignment ....................................................................................................... 2-2
2.1.2 Relevant registers ..........................................................................................................2-3
2.1.3 Terminate unused pins.................................................................................................. 2-6
2.1.4 Notes on use .................................................................................................................. 2-7
2.1.5 Termination of unused pins ..........................................................................................2-8
2.2 Timer.......................................................................................................................................2-10
2.2.1 Memory map .................................................................................................................2-10
2.2.2 Relevant registers ........................................................................................................2-11