FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E - Manual (Page 192)

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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.72 ST (Store Word Data in Register to Memory)
Loads the word data in "Ri" to memory address "(R15 + u4 × 4)".
The value "u4" is an unsigned calculation.
■
ST (Store Word Data in Register to Memory)
Assembler format: ST Ri, @ (R15, udisp6)
Operation: Ri
→
(R15 + u4 × 4)
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: a cycle(s)
Instruction format:
Example: ST R3, @ (R15, 4)
N Z V C
– – – –
MSB LSB
0 0 0 1 0 0 1 1 u4 Ri
12345678
R3 R3 8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
12345678
1234567C 1234567C
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
R15 1 2 3 4 5 6 7 8 R15
Instruction bit pattern : 0001 0011 0001 0011
x x x x x x x x
Memory Memory
Before execution After execution