PIC12CR509AT-04 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC12CR509AT-04

8-Pin, 8-Bit CMOS Microcontrollers

Microchip Technology 

PIC12C5XX

SWAPF

Swap Nibbles in f

Syntax:

[ label ] SWAPF f,d

Operands:

0 ≤ f ≤ 31

d ∈ [0,1]

Operation:

(f<3:0>) → (dest<7:4>);

(f<7:4>) → (dest<3:0>)

Status Affected: None

Encoding:

0011 10df ffff

Description:

The upper and lower nibbles of register

’f’ are exchanged. If ’d’ is 0 the result is

placed in W register. If ’d’ is 1 the result

is placed in register ’f’.

Words:

1

Cycles:

1

Example

SWAPF REG1, 0

Before Instruction

REG1 = 0xA5

After Instruction

REG1 = 0xA5

W

= 0X5A

TRIS

Load TRIS Register

Syntax:

[ label ] TRIS f

Operands:

f=6

Operation:

(W) → TRIS register f

Status Affected: None

Encoding:

0000 0000 0fff

Description:

TRIS register ’f’ (f = 6) is loaded with the

contents of the W register

Words:

1

Cycles:

1

Example

TRIS GPIO

Before Instruction

W

= 0XA5

After Instruction

TRIS = 0XA5

Note: f = 6 for PIC12C5XX only.

XORLW

Exclusive OR literal with W

Syntax:

[label] XORLW k

Operands:

0 ≤ k ≤ 255

Operation:

(W) .XOR. k → (W)

Status Affected: Z

Encoding:

1111 kkkk kkkk

Description:

The contents of the W register are

XOR’ed with the eight bit literal 'k'. The

result is placed in the W register.

Words:

1

Cycles:

1

Example:

XORLW 0xAF

Before Instruction

W = 0xB5

After Instruction

W = 0x1A

XORWF

Exclusive OR W with f

Syntax:

[ label ] XORWF f,d

Operands:

0 ≤ f ≤ 31

d ∈ [0,1]

Operation:

(W) .XOR. (f) → (dest)

Status Affected: Z

Encoding:

0001 10df ffff

Description:

Exclusive OR the contents of the W

register with register 'f'. If 'd' is 0 the

result is stored in the W register. If 'd' is

1 the result is stored back in register 'f'.

Words:

1

Cycles:

1

Example

XORWF REG,1

Before Instruction

REG = 0xAF

W

= 0xB5

After Instruction

REG = 0x1A

W

= 0xB5

© 1999 Microchip Technology Inc.

DS40139E-page 57

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