AN1526 datasheet(13/26 Pages) STMICROELECTRONICS

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ST7FLITE0 QUICK REFERENCE NOTE

JRC d

Jump Relative if C = 1

⇐ PC + d IF C = 1

mem

JRNC d

Jump Relative if C = 0

⇐ PC + d IF C = 0

mem

JRULT d

Jump Relative if C = 1

⇐ PC + d IF C = 1

mem

JRUGE d

Jump Relative if C = 0

⇐ PC + d IF C = 0

mem

JRUGT d

Jump Relative if (C + Z) = 0

⇐ PC + d IF (C OR Z) = 1

mem

JRULE d

Jump Relative if (C + Z) = 1

⇐ PC + d IF (C OR Z) = 0

mem

LD d, s

Load s in d

⇐ s

reg,

mem

mem,

reg

N, Z

MUL d, s

Multiply d by s

d:s

⇐ d * s

A, X, Y

A, X, Y H = 0, C = 0

NEG d

Negate d (logical 2-complement) d

⇐ (d XOR FFh) + 1

reg,

mem

N, Z, C

NOP

No operation

OR d, s

Logical OR (d with s)

⇐ d OR s

mem

N, Z

POP d

Pop from the Stack

⇐ (++SP)

reg, CC

H, I, N, Z, C

PUSH d

Push onto the Stack

(SP- -)

⇐ d-

reg, CC

RCF

Reset carry flag

⇐ 0-

C = 0

RET

Subroutine return

POP PC

RIM

Reset interrupt mask

⇐ 0-

I = 0

RLC d

Rotate left through carry

reg,

mem

N, Z, C

RRC d

Rotate right through carry

reg,

mem

N, Z, C

RSP

Reset Stack pointer

⇐ reset value

SBC d, s

Subtract s from d with carry

⇐ d - s - C

mem

N, Z, C

SCF

Set carry flag

⇐ 1-

C = 1

SIM

Set interrupt mask

⇐ 1-

I = 1

SLA d

Shift left arithmetic (equal to SLL

reg,

mem

N, Z, C

SLL d

Shift left logical

reg,

mem

N, Z, C

SRA d

Shift right arithmetic (equal to

SRL 1)

reg,

mem

N, Z, C

SRL d

Shift right logical

reg,

mem

N = 0, Z, C

SUB d, s

Subtract s from d

⇐ d - s

mem

N, Z, C

SWAP d

Swap nibbles

d (7:4)

⇔ d (3:0)

reg,

mem

-N, Z

TNZ d

Test for negative and zero

{N, Z}

⇐ TEST (d)

reg,

mem

-N, Z

Table 5. Instruction Set

Mnemonic

Description

Operation

Dest.

Source

Flags

← 70

→ 70

← 70 ← 0

→ 0

→ 70 → C

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