• ARTX-166 is a full-blown real-time kernel with support for multiple events, numerous tasks, various methods of inter-task communication, and flexible configuration options. ARTX-166 is available as a stand-alone product (part number FR166).
• RTX166 Tiny is a high-performance, low-overhead kernel designed for single-chip applications. RTX166 Tiny is included with the PK166 Professional Developer's Kit.

Specifications for each are listed in the following table.

Feature	Product
	ARTX-166	RTX166 Tiny
Features
Kernel Source Code
Flash File System
TCP/IP Stack
CAN Driver
Multitasking
Round-Robin
Preemptive
Cooperative
Task Specifications
Priority Levels	255	1
Defined Tasks (max)	256	32
Active Tasks (max)	256	32
Context Switch Time	< 25 µsec (At 20 MHz)	400-4,000 states
Interrupt Latency	0.2 µsec (At 20 MHz)	4.0 µsec (At 20 MHz)
Memory Requirements
CODE Space	4K Bytes	1.5K Bytes
RAM Space	≈500 Bytes min	8 Bytes +4 Bytes per task
Timers/Signals/Events
Timeouts
Intervals
User Timers (max)	Unlimited	N/A
Signals
Signals (max)	16 per task	1 per task
Timer Used	0-8	0-6
System Clock Divisor	1,000-40,000	250-65,535
Inter-Task Communication
Semaphores (counting)
Semaphores (max)	Unlimited	N/A
Mailboxes
Mailboxes (max)	Unlimited	N/A
Mailbox Size	Unlimited (Default 20)	N/A