MITSUBISHI MICROCOMPUTERS
4551 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for
INFRARED REMOTE CONTROL TRANSMITTER
LIST OF INSTRUCTION FUNCTION (CONTINUED)
Grouping Mnemonic
Function
Grouping Mnemonic
Function
DI
(INTE) ← 0
TLCA (TLC) ← (A)
(RLC) ← (A)
EI
(INTE) ← 1
SNZT1 (T1F) = 1 ?
SNZ0 (EXF0) = 1 ?
After skipping the next
After skipping the next
instruction,
instruction,
(T1F) ← 0
(EXF0) ← 0
SNZT2 (T2F) = 1 ?
SNZI0 I12 = 1 : (INT0) = “H” ?
After skipping the next
I12 = 0 : (INT0) = “L” ?
instruction,
(T2F) ← 0
TAV1 (A) ← (V1)
IAP0
(A) ← (P0)
TV1A (V1) ← (A)
OP0A (P0) ← (A)
TAI1
(A) ← (I1)
IAP1
(A) ← (P1)
TI1A
(I1) ← (A)
OP1A (P1) ← (A)
TAW1 (A) ← (W1)
IAP2
(A) ← (P2)
TW1A (W1) ← (A)
CLD
(D) ← 1
TAW2 (A) ← (W2)
RD
(D(Y)) ← 0
TW2A (W2) ← (A)
(Y) = 0 to 9
Grouping Mnemonic
Function
TC1A (C1) ← (A)
STCR
Carrier wave
generating start
SPCR
Carrier wave
generating stop
TC2A
(C20) ← (A0)
NOP
(PC) ← (PC) + 1
POF
Transition to clock
operating mode
POF2
Transition to RAM
back-up mode
EPOF
Power down instruction
(POF, POF2) valid
SNZP (P) = 1 ?
WRST (WDF) ← 0, (WEF) ← 1
TAMR (A) ← (MR)
TAW3 (A1, A0) ← (W31, W30)
TW3A (W31, W30) ← (A1, A0)
TAB1
(B) ← (T17–T14)
(A) ← (T13–T10)
SD
(D(Y)) ← 1
(Y) = 0 to 9
TPU0A (PU0) ← (A)
TAPU0 (A) ← (PU0)
TMRA (MR) ← (A)
TAV2
(A) ← (V2)
TV2A
(V2) ← (A)
T1AB
at timer 1 stop (W20=0)
(R17–R14) ← (B)
(T17–T14) ← (B)
(R13–R10) ← (A)
(T13–T10) ← (A)
At timer 1 operating
(W20=1),
(R17–R14) ← (B)
(R13–R10) ← (A)
TL1A
TAL1
TL2A
(L1) ← (A)
(A) ← (L1)
(L2) ← (A)
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