ST72F521R9TC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F521R9TC

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

STMicroelectronics 

ST72521

INSTRUCTION SET OVERVIEW (Cont’d)

Mnemo

JRULE

LD

MUL

NEG

NOP

OR

Description

Jump if (C + Z = 1)

Load

Multiply

Negate (2’s compl)

No Operation

OR operation

POP

Pop from the Stack

PUSH

RCF

RET

RIM

RLC

RRC

RSP

SBC

SCF

SIM

SLA

SLL

SRL

SRA

SUB

SWAP

TNZ

TRAP

WFI

XOR

Push onto the Stack

Reset carry flag

Subroutine Return

Enable Interrupts

Rotate left true C

Rotate right true C

Reset Stack Pointer

Substract with Carry

Set carry flag

Disable Interrupts

Shift left Arithmetic

Shift left Logic

Shift right Logic

Shift right Arithmetic

Substraction

SWAP nibbles

Test for Neg & Zero

S/W trap

Wait for Interrupt

Exclusive OR

Function/Example

Unsigned <=

dst <= src

X,A = X * A

neg $10

Dst

reg, M

A, X, Y

reg, M

Src

M, reg

X, Y, A

A=A+M

pop reg

pop CC

push Y

C=0

A

M

reg

M

CC

M

M

reg, CC

I1:0 = 10 (level 0)

C <= A <= C

C => A => C

S = Max allowed

A=A-M-C

C=1

I1:0 = 11 (level 3)

C <= A <= 0

C <= A <= 0

0 => A => C

A7 => A => C

A=A-M

A7-A4 <=> A3-A0

tnz lbl1

S/W interrupt

reg, M

reg, M

A

M

reg, M

reg, M

reg, M

reg, M

A

M

reg, M

A = A XOR M

A

M

I1 H I0 N Z C

NZ

0

0

NZC

NZ

I1 H I0 N Z C

0

1

0

NZC

NZC

NZC

1

1

1

NZC

NZC

0ZC

NZC

NZC

NZ

NZ

1

1

1

0

NZ

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