21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 11
PIC12F629PIC12F629
IntroductionIntroduction
RNDr. Vojtěch KrmíčekRNDr. Vojtěch Krmíček
vojtec@ics.muni.czvojtec@ics.muni.cz
Ing. Zbyněk Bureš, Ph.D.Ing. Zbyněk Bureš, Ph.D.
zbynek.bures@unob.czzbynek.bures@unob.cz
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 22
Basic dataBasic data
High Performance RISC CPU:
– Only 35 instructions to learn
– All single cycle instructions except branches
Operating speed:
– DC - 20 MHz oscillator/clock input
– DC - 200 ns instruction cycle
Interrupt capability
– 8-level deep hardware stack
Direct, Indirect, and Relative Addressing
modes
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 33
Basic dataBasic data
Special Microcontroller Features:
– Internal and external oscillator options
– Precision Internal 4 MHz oscillator factory
calibrated to ±1%
– External Oscillator support for crystals and
resonators
– Power saving SLEEP mode
– 5μs wake-up from SLEEP, 3.0V, typical
– Wide operating voltage range - 2.0V to 5.5V
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 44
Basic dataBasic data
Low Power Features:
– Standby Current:
– 1nA @ 2.0V, typical
Operating Current:
– 8.5μA @ 32 kHz, 2.0V, typical
– 100μA @ 1 MHz, 2.0V, typical
Watchdog Timer Current
– 300 nA @ 2.0V, typical
Timer1 oscillator current:
– 4μA @ 32 kHz, 2.0V, typical
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 55
Basic dataBasic data
Peripheral Features:
– 6 I/O pins with individual direction control
– High current sink/source for direct LED drive
– Analog comparator module with:
– One analog comparator
– Programmable on-chip comparator voltage
reference (CVREF) module
– Programmable input multiplexing from device
inputs
– Comparator output is externally accessible
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 66
Basic dataBasic data
Peripheral Features:
– Analog-to-Digital Converter module
(PIC12F675):
– 10-bit resolution
– Programmable 4-channel input
– Voltage reference input
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 77
Basic dataBasic data
Peripheral Features:
– Timer0: 8-bit timer/counter with 8-bit
programmable prescaler
– Enhanced Timer1:
16-bit timer/counter with prescaler
External Gate Input mode
Option to use OSC1 and OSC2 in LP mode as
Timer1 oscillator, if INTOSC mode selected
– In-Circuit Serial ProgrammingTM (ICSPTM) via
two pins
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 88
Basic dataBasic data
PackagePackage
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 99
Block diagramBlock diagram
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 1010
Memory Map & StackMemory Map & Stack
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 1111
RegistersRegisters
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 1212
StatusStatus
21.2.201121.2.2011 PB171 Spring 2011PB171 Spring 2011 1313
Instruction setInstruction set