• RTX51 FULL is a full-blown real-time kernel with support for multiple events, numerous tasks, various methods of inter-task communication, and flexible configuration options. RTX51 FULL is available as a stand-alone product (part number FR51).
• RTX51 TINY is a high-performance, low-overhead kernel designed for single-chip applications. RTX51 TINY is included with the PK51 Professional Developer's Kit.

Specifications for each are listed in the following table.

Description Part Number   Parametric Specifications	RTX51 FULL FR51	RTX51 TINY Included with PK51
Round-Robin Multitasking
Preemptive Multitasking
Cooperative Multitasking
Timeout Events
Interval Events
Signal Events
Message Events
Semaphore Events
Memory Pools
Code Banking Support
CAN Libraries (for the Intel 82526 and 82527; Philips 82C200 and 8xC592; and Infineon 81C90, 81C91, C505C, and C515C)
Maximum Number of Defined Tasks	256	16
Maximum Number of Active Tasks	19	16
Required CODE Space	6K-8K bytes	900 bytes
Required DATA Space	40-46 bytes	7 bytes
Required Stack (IDATA) Space	20-200 bytes	3 bytes for each task
Required XDATA Space	650 bytes (minimum)	0 bytes
Timer Used	0, 1, or 2	0
System Clock Divisor	1,000-40,000 cycles	1,000-65,535 cycles
Interrupt Latency	Less than 50 cycles	Less than 20 cycles
Context Switch Time - Fast Task (Depends on Stack Load)	70-100 cycles	N/A
Context Switch Time - Standard Task (Depends on Stack Load)	180-700 cycles	100-700 cycles
Task Priority Levels	4	1
Maximum Number of Semaphores (Binary)	8	N/A
Maximum Number of Mailboxes	8	N/A
Mailbox Size	8 entries	N/A
Maximum Number of Memory Pools	16	N/A