Editing PIC microcontrollers (section)

===Parallax===
{{Main article|Parallax SX}}
[[Parallax, Inc. (company)|Parallax]] produced a series of PICmicro-like microcontrollers known as the [[Parallax SX]]. It is currently discontinued. Designed to be architecturally similar to the PIC microcontrollers used in the original versions of the [[BASIC Stamp]], SX microcontrollers replaced the PIC in several subsequent versions of that product.

Parallax's SX are 8-bit RISC microcontrollers, using a 12-bit instruction word, which run fast at 75&nbsp;MHz (75 MIPS). They include up to 4096 12-bit words of [[flash memory]] and up to 262 bytes of [[random access memory]], an eight bit counter and other support logic. There are software library modules to emulate [[I²C]] and [[Serial Peripheral Interface Bus|SPI]] interfaces, UARTs, frequency generators, measurement counters and [[Pulse-width modulation|PWM]] and sigma-delta A/D converters. Other interfaces are relatively easy to write, and existing modules can be modified to get new features.