HCS12 datasheet(255/452 Pages) FREESCALE

Part #	HCS12

Description	HCS12 Microcontrollers

PDF	452 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Glossary

S12CPUV2 Reference Manual, Rev. 4.0

Freescale Semiconductor

255

Operation:

(M(SP) : M(SP+1)) ⇒ A : B

(SP) + $0002

⇒ SP

Description:

Double accumulator D is loaded from the address indicated by the stack

pointer. The SP is then incremented by two.

The order in which A and B are pulled from the stack is the opposite of the

order in which A and B are pulled when an RTI instruction is executed. The

interrupt stacking order for A and B is backward-compatible with the M6800,

which had no 16-bit accumulator.

Pull instructions are commonly used at the end of a subroutine to restore the

contents of CPU registers that were pushed onto the stack before

subroutine execution.

PULD

Pull Double Accumulator from Stack

PULD

CCR Details:

HIN

––––––––

Source Form

Address

Mode

Object Code

Access Detail

HCS12

M68HC12

PULD

INH

UfO

HCS12 Datasheet(PDF) 255 Page - Freescale Semiconductor, Inc