PICAXE-M2

ManualsBrandsRevolution Education ManualsMicrocontrollersPICAXE-08M2 Microcontroller Chip

PICAXE-M2 Information

Introducing the new generation PICAXE-M2 parts for education...

... more memory capacity and features at no extra cost!

The new PICAXE-08M2, 14M2, 18M2 and 20M2 microcontrollers build on

the pedigree of the ever popular PICAXE microcontrollers by adding these

new and improved features at no extra cost:

• Almost every pin is individually configurable, so, for instance, the 18M2

can now have 13 outputs instead of 8 – the choice is yours! Therefore M2

chips can be used in either the ‘traditional’ fixed pin format or the new

flexible ‘user configured’ format.

• Many extra ADC channels are now also available on other pins, with new

support for touch sensor inputs.

• The serial input pins (and reset on 18M2) can now be used as 1 or 2

extra input pins, giving up to 2 more general purpose input pins for your

project. New software ‘reset’ command is available if a reset is required.

• The 08M2 is now a much more powerful 8 pin option, with all the

features of the larger pin count devices such as large memory capacity,

parallel tasks and advanced hardware features such as touch sensors, SR

latch, internal temperature sensor and I2C interfacing.

• The M2 parts can now run either four or eight separate tasks in parallel, allowing, for

instance, a Logicator flowsheet to contain 4 separate start cells and 4 separate

flowchart tasks. Multi tasking is also supported in BASIC program listings.

• The M2 parts replaces all of the A/M/X parts and so give a much higher memory

capacity (2048 bytes, up to 1800 lines of program) at the same price as the older

256 byte M parts – so that is 8x the memory capacity of the older M parts for no

extra cost!

• Fully backwards compatible with all existing PICAXE project boards and most

programs written for any older PICAXE part.

• New lower 1.8V operation now makes the M2 ideal for use with 3V battery packs -

save the cost of one battery!

• Twice as many (now 28) general purpose byte variables, with up to a total of up to

512 bytes of RAM.

• New ‘time’ variable counts elapsed seconds.

• 256 bytes of non-volatile data EEPROM memory.

• Faster internal resonator (up to 32MHz) means up to 8x faster program processing.

• Full support for common features such as ring tone tunes, servos, digital

temperature sensors and infra-red input and output on any pin.

• Full support for advanced features like DAC, SR latch, hardware serial commands

(for much faster baud rates), i2c memory devices and PWM control of motors.

• The M2 parts are new custom parts factory manufactured by Microchip Inc. solely

for Revolution Education and so are factory engraved with the full PICAXE-M2

name – no more confusing PIC numbers for students to decipher!

revolution

picaxem2.pmd

08M2

08M

C.0 / Serial Out (Out / hserout / DAC)

C.1 (In / Out / ADC / Touch / hserin / SRI / hi2c scl)

C.2 (In / Out / ADC / Touch / pwm / tune / SRQ / hi2c sda)

(In) Serial In / C.5

(Touch / ADC / Out / In) C.4

(In) C.3

PICAXE-08M2

PICAXE-18M2

18A

18M

18X

PICAXE-18M2 replaces all

18, 18A, 18M, 18X parts.

Summary of content (8 pages)

PAGE 1
PICAXE-M2 Information Introducing the new generation PICAXE-M2 parts for education... ...
PAGE 2
PICAXE M2 Product Briefing. Introduction This product briefing is designed to inform existing PICAXE users about the extra and enhanced programming commands and features of the exciting new M2 range of PICAXE microcontrollers. Further details about each command and feature are available in the updated PICAXE Manuals (v7.7 or later). Programming Editor software must be v5.3.5 or greater. Note that M2 parts are laser engraved with the full PICAXE name for easier identification.
PAGE 3
PICAXE-M2 Product Briefing 08 08M2 08M Example Part Comparison (08M2): BASIC command 08M2 08M 08 Memory Capacity (bytes) Max. Memory Capacity (lines) 2048 1800 256 220 128 110 Available Input / Output Pins 6 5 5 1.8 - 5 3-5 3-5 PICAXE Feature Operating Voltage (V) Parallel multi-tasking (starts) start 4 1 1 General 'B' Variables (bytes) Total Available RAM (bytes) peek / poke 28 128 14 62 14 0 8 0 0 read / write 256 256-P 128-P Max.
PAGE 4
PICAXE-M2 Product Briefing Parallel Tasks One of the new features of the M2 series is that they can run up to 4 program tasks in parallel. This simplifies programming for younger students, particularly when using the Logicator flowcharting software. For more details about this feature please see the ‘Parallel Task Processing’ section in part 1 of the PICAXE manual (v7.7 or later).
PAGE 5
PICAXE-M2 Product Briefing Variables On the M2 parts there are now up to 512 general purpose variables. 28 of these, known as b0 to b27, can be used directly in any command (as with other PICAXE parts). This is double the older M/X number of bX variables. All general purpose bytes (0-511) can also be addressed both directly and indirectly. To directly address the values the peek (read the byte) and poke (write the byte) commands are used.
PAGE 6
PICAXE-M2 Product Briefing Clock Frequency Much higher clock rates are now available. This greatly improves the PICAXE processing speed. The default power-up operating frequency is 4MHz, using the internal resonator. Alternate internal clock frequencies up to 32MHz are now available – 8x faster than 4MHz! See: setfreq More I/O Pins The serial download pins can now be used as general purpose pins. The new reset command replaces the need for a separate external reset pin.
PAGE 7
PICAXE-M2 Product Briefing Hardware Serial Port Higher baud rates are now possible via the new hardware serial port. See: hsersetup, hserout, hserin SRLatch The SR latch is a hardware feature that can be used in the background to control the SRQ latch output pin. This can be triggered by the SRI pin to instantly control that output pin, independent of program operation. The latch can also be used to generate a 555 timer style pulsing output.
PAGE 8
PICAXE-M2 Product Briefing M2 Part Comparison Most features are supported by all 4 sizes of the M2 microcontrollers. However there are a few slight differences between the parts due to the technical design of the silicon resources within the microcontroller: PICAXE Command Feature 08M2 18M2 14M2 20M2 Voltage Range (V) 1.85.5 1.85.5 1.85.5 1.85.