As still a bit of a newbie to using PICAXE, I have been trying to make head or sense of the determination as to what pins are TTL and which are ST and which can be changed and which cannot. The latter part of the query, re changeable pin types, I understand would relate only to the M2 versions.
Reading through the downloadable manual (Pt.2 - v.7.9.2, 10/2015) shows one set of detail for 'some' of the pins (TTL or ST) while the on-line commands page shows something different in some places. And trying to decipher the Microchip datasheets relative to which of the PICAXE chips relate to which of their nomenclatue is mind boggling and then deciding does that information relate to the chip I have in my hand.... and some of the forum messages, albeit mostly being relatively old, yet informative, may or may not agree with anything read elsewhere. There's a lot of confusing information to be found out there!
Specifically I am looking at the 18F25K22 (28X2 on the AXE201 board) and the 40X2 (yet to be ordered, so no doubt the latest chip available) and any up-to-date and definitive clarification would be greatly appreciated as I want to be sure I am using the correct pins as TTL input pins.
Many thanks in advance.
Dave
Reading through the downloadable manual (Pt.2 - v.7.9.2, 10/2015) shows one set of detail for 'some' of the pins (TTL or ST) while the on-line commands page shows something different in some places. And trying to decipher the Microchip datasheets relative to which of the PICAXE chips relate to which of their nomenclatue is mind boggling and then deciding does that information relate to the chip I have in my hand.... and some of the forum messages, albeit mostly being relatively old, yet informative, may or may not agree with anything read elsewhere. There's a lot of confusing information to be found out there!
Specifically I am looking at the 18F25K22 (28X2 on the AXE201 board) and the 40X2 (yet to be ordered, so no doubt the latest chip available) and any up-to-date and definitive clarification would be greatly appreciated as I want to be sure I am using the correct pins as TTL input pins.
Many thanks in advance.
Dave