Microchip Technology megaAVR 0 Series Manual page 447

Figure 29-7. UPDI Instruction Set Overview
Opcode
L DS 0 0 0
STS
0 1 0
Opcode
L D
0 0 1
ST
0 1 1
L DCS
1 0 0
STCS
1 1 0
REPEA T
1 0 1
K EY
1 1 1
©
2018 Microchip Technology Inc.
Unified Program and Debug Interface (UPDI)
Size A Size B
0
0
Ptr Size A/B
0
0
CS Address
0
0
Size B
0 0 0
SIB Size C
0 0
Datasheet Preliminary
megaAVR
O P C O D E
0 0 0 L D S
0 0 1 L D
0 1 0 S T S
0 1 1 S T
1 0 0 L D C S ( L D S C o n t r o l/ S ta t u s )
1 0 1 R E P E A T
1 1 0 S T C S ( S T S C o n t r o l/ S t a t u s )
1 1 1 K E Y
S i z e A - A d d r e s s s i z e
0 0 B y t e
0 1 W o r d ( 2 B y t e s )
1 0 R e s e r v e d
1 1 R e s e r v e d
P t r - P o i n t e r a c c e s s
0 0 * ( p t r )
0 1 * ( p t r + + )
1 0 p t r
1 1 R e s e r v e d
S i z e B - D a t a s i z e
0 0 B y t e
0 1 W o r d ( 2 B y t e s )
1 0 R e s e r v e d
1 1 R e s e r v e d
C S A d d r e s s ( C S - C o n t r o l / S t a t u s r e g . )
0 0 0 0 R e g 0
0 0 0 1 R e g 1
0 0 1 0 R e g 2
0 0 1 1 R e g 3
0 1 0 0 R e g 4 ( A S I C S s p a c e )
. . . . ..
1 1 1 1 R e s e r v e d
S i z e C - K e y s i z e
0 0 6 4 b it s ( 8 B y t e s )
0 1 1 2 8 b it s ( 1 6 B y t e s )
1 0
R e s e r v e d
1 1 R e s e r v e d
S IB – S y s t e m I n f o r m a t i o n B l o c k s e l .
0 R e c e iv e K E Y
1 S e n d S I B
DS40002015A-page 447
®
0-Series