DS89C420-QCL Datasheet, PDF (129/139 Pages) Maxim Integrated Products – Ultra-High-Speed Flash Microcontroller User’s Guide

Ultra-High-Speed Flash
Microcontroller User’s Guide
MNEMONIC
ACALL addr 11
INSTRUCTION CODE
D7 D6 D5 D4 D3 D2 D1 D0
HEX
1
a10 a9
a7 a6
a8
a5
a8
0
a3
0
a2
0
a1
1
a0
Byte 1
Byte 2
BYTE
2
LCALL addr 16
0
a15
a7
0
a14
a6
0
a13
a5
1
a12
a5
0
a11
a3
0
a10
a2
1
a9
a1
0
a8
a0
12
Byte 2
Byte 3
3
RET
0
0
1
0
0
0
1
0
22
1
RETI
0
0
1
1
0
0
1
0
32
1
AJMP addr 11
a10 a9
a8
0
0
0
0
1
Byte 1
2
a7 a6 a5 a4 a3 a2 a1 a0
Byte 2
0
0
0
0
0
0
1
0
02
LJMP addr 16
a15 a14 a13 a12 a11 a10 a9 a8
Byte 2
3
a7 a6 a5 a4 a3 a2 a1 a0
Byte 3
SJMP rel
1
0
0
0
0
0
0
0
r7
r6
r5
r4
r3
r2
r1
r0
80
Byte 2
2
JMP @A +
DPTR
0
1
1
1
0
0
1
1
73
1
JZ rel
1
0
0
0
0
0
0
0
60
2
r7
r6
r5
r4
r3
r2
r1
r0
Byte 2
JNZ rel
1
0
0
0
0
0
0
0
70
2
r7
r6
r5
r4
r3
r2
r1
r0
Byte 2
CYCLE
2
3
3
3
2
3
3
3
3
3
EXPLANATION
(PC) = (PC) + 2
(SP) = (SP) + 1
((SP)) = (PC7-0 )
(SP) = (SP) + 1
((SP)) = (PC15-8 )
(PC) = page address
(PC) = (PC) + 3
(SP) = (SP) + 1
((SP)) = (PC7-0 )
(SP) = (SP) + 1
((SP)) = (PC15-8 )
(PC) = addr15-0
(PC15-8 ) = ((SP))
(SP) = (SP) - 1
(PC7-0 ) = ((SP))
(SP) = (SP) - 1
(PC15-8 ) = ((SP))
(SP) = (SP) - 1
(PC7-0 ) = ((SP))
(SP) = (SP) - 1
(PC) = (PC) + 2
(PC10-0 ) = page address
(PC) = addr15-0
(PC) = (PC) + 2
(PC) = (PC) + rel
(PC) = (A) + (DPTR)
(PC) = (PC) + 2
IF (A) = 0 THEN
(PC) = (PC) + rel
(PC) = (PC) + 2
IF (A) ≠ 0 THEN
(PC) = (PC) + rel
129 ____________________________________________________________________________________________