PIRA32 Microcontroller
m32.pdf - page 2
© 2016 Pira.cz
TABLE OF CONTENTS
1
PIN DIAGRAMS AND DESCRIPTION ............................................................................................................. 3
1.1
28-pin PDIP, 28-pin SOIC ......................................................................................................................... 3
1.1.
Internal logical structure (simplified) .......................................................................................................... 5
2
ELECTRICAL CHARACTERISTICS ............................................................................................................... 6
3
DESIGN NOTES .............................................................................................................................................. 7
3.1
Device reset .............................................................................................................................................. 7
3.2
Crystal oscillator ........................................................................................................................................ 7
3.3
Power supply ............................................................................................................................................. 7
3.4
Internal PLL ............................................................................................................................................... 7
3.5
External TA switch ..................................................................................................................................... 7
3.6
RS-232 interface........................................................................................................................................ 7
3.7
Digital-to-Analog converter ........................................................................................................................ 8
3.8
Output low-pass filter ................................................................................................................................. 9
3.9
Expansion I
2
C bus ..................................................................................................................................... 9
3.10
Operation without EEPROM on I
2
C bus .................................................................................................... 9
4
CONNECTION DIAGRAMS ............................................................................................................................10
4.1
Basic connection diagram ....................................................................................................................... 10
4.2
Reference connection diagram ................................................................................................................ 11
4.2.1
Setting up ............................................................................................................................................11
4.2.2
I/O connectors and control items ........................................................................................................11
4.2.3
Schematic diagram .............................................................................................................................12
4.2.4
Part list ................................................................................................................................................13
5
PACKAGE DETAILS ......................................................................................................................................14
5.1
28-Lead Skinny Plastic Dual In-Line
– 300 mil Body (PDIP) ................................................................... 14
5.2
28-Lead Plastic Small Outline
– Wide, 300 mil Body (SOIC) ................................................................... 15
