PICAXE-08M2 microcontroller (AXE007M2) - Hardware

AXE007M2 £1.99 Buy Now PDF ↓ (£2.39 inc. VAT) Educational Pricing...

Product Details

The smallest, but most popular, PICAXE microcontroller. Very popular in education due to its low cost and small size, but also very popular in a wide range of hobbyist projects. Small but perfectly formed!

This chip supports up to 6 inputs/outputs with 3 analogue/touch sensor channels.

All M2 series parts support enhanced features such as configurable i/o pins, parallel tasks, ring tone music and touch sensor inputs.

Click here for more M2 series information.

The PICAXE-08M2 replaces the older PICAXE-08 and PICAXE-08M chips.

Specification

Pack size

20x10x15mm

Pack weight

1.5g

The following table gives a brief summary of the various PICAXE chips.
For a more detailed comparison please see the PICAXE manuals and pinout diagrams.

Feature

08M2

14M2

18M2

20M2

20X2

28X2

40X2

Memory Capacity (bytes)

2048

4096

RAM (bytes)

128

512

256

512

256

1280

Byte Variables (bytes)

Input/Outputs Pins

ADC/Touch Pins

Max. Freq. (MHz)

Serial In/Out

Yes

Infrared In/Out

Yes

I2C

Yes

Tune (ring tones)

Yes

Parallel Tasks

Program Slots

The same software, BASIC language and USB download cable is shared between all the PICAXE chips.

Revision History

Current 08M2 production firmware is version 4.A Known Issues: ISSUE - PAUSE DOES NOT WORK CORRECTLY DURING INTERRUPT ON A MULTI-TASK PROGRAM To workaround this issue use the command 'pause_int' instead of 'pause' within an interrupt in a multi (parallel) task program. Single task programs work correctly. ISSUE - NAP 1 CAUSES RESET At K31 CLOCK FREQUENCY To workaround this issue do not use 'nap 1' after 'setfreq k31' All other values (e.g. 'nap 2') work correctly. ISSUE - CALIBADC IS UNSTABLE AT M32 CLOCK FREQUENCY To workaround this issue use two consecutive 'calibadc' commands to give time for the Vref to settle.