FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E - Manual (Page 267)

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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.126 EXTUB (Unsign Extend from Byte Data to Word Data)
Extends the byte data indicated by "Ri" to word data as an unsigned binary value.
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EXTUB (Unsign Extend from Byte Data to Word Data)
Assembler format: EXTUB Ri
Operation: extu (Ri)
→
Ri (byte
→
word)
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
Example: EXTUB R1
N Z V C
– – – –
MSB LSB
1 0 0 1 0 1 1 1 1 0 0 1 Ri
R1 F F F F F F F F R1 0 0 0 0 0 0 F F
Before execution After execution
Instruction bit pattern : 1001 0111 1001 0001