FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E - Manual (Page 183)

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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.63 LDUH (Load Half-word Data in Memory to Register)
Extends with zeros the half-word data at memory address "Rj", loads to "Ri".
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LDUH (Load Half-word Data in Memory to Register)
Assembler format: LDUH @Rj, Ri
Operation: extu (( Rj))
→
Ri
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: b cycle(s)
Instruction format:
Example: LDUH @R2, R3
N Z V C
– – – –
MSB LSB
0 0 0 0 0 1 0 1 Rj Ri
R2
12345678
1 2 3 4 5 6 7 8
x x x x x x x x
R2
R3 R3
4 3 2 1
0 0 0 0 4 3 2 1
1 2 3 4 5 6 7 8
Memory
12345678 4 3 2 1
Memory
Before execution After execution
Instruction bit pattern : 0000 0101 0010 0011