USBB17RX78K4-XXX NEC Electronics, USBB17RX78K4-XXX Datasheet - Page 16

• Manufacturer Part Number: USBB17RX78K4-XXX
• Description: 78K/4 series realtime OS
• Manufacturer: NEC Electronics

OS.
Configuration)
However, priority 0 and priority 1 are reserved for OS. Therefore, priorities to which user tasks can be allocated are
limited to the 14 levels of 2 to 15.
Because RX78K/IV is a multi-task OS, it can process two or more tasks concurrently.
78K/IV series microcomputer has 8 register banks. With RX78K/IV, bank 0 of these register banks is used by the
There are 16 levels of task priorities (0 to 15), with the lowest number assigned the highest priority level.
This chapter describes the following items of the basic functions:
(1) Task state
(2) Task manipulation
(3) Synchronization and communication
(4) Interrupt processing
(5) Memory management
(6) Time management
Tanks can be allocated to registers for high-speed task switching. (For details, refer to 3.1 RX78K/IV
CHAPTER 2
BASIC FUNCTIONS OF RX78K/IV
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