NEC switch - Manual (Page 49)

CHAPTER 3 CPU ARCHITECTURE
User’s Manual U12978EJ3V0UD
49
3.3.2 Immediate addressing
[Function]
Immediate data in the instruction word is transferred to the program counter (PC) and branched.
This function is carried out when the CALL !addr16 or BR !addr16 instruction is executed.
The CALL !addr16 and BR !addr16 instructions can be branched to any location in the memory space.
[Illustration]
In case of CALL !addr16 and BR !addr16 instructions
15 0
PC
8 7
7 0
CALL or BR
Low Addr.
High Addr.