D78F9177 Ver la hoja de datos (PDF) - NEC => Renesas Technology

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D78F9177

UPD78F9177, D78F9177 / 8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD78F9177, 78F9177Y

6.1.2 Descriptions of the operation field

A:

A register; 8-bit accumulator

X:

X register

B:

B register

C:

C register

D:

D register

E:

E register

H:

H register

L:

L register

AX:

AX register pair; 16-bit accumulator

BC:

BC register pair

DE:

DE register pair

HL:

HL register pair

PC:

Program counter

SP:

Stack pointer

PSW: Program status word

CY:

Carry flag

AC:

Auxiliary carry flag

Z:

Zero flag

IE:

Interrupt request enable flag

NMIS: Non-maskable interrupt servicing flag

( ):

Memory contents indicated by address or register contents in parentheses

XH, XL: Higher 8 bits and lower 8 bits of 16-bit register

∧:

Logical product (AND)

∨:

Logical sum (OR)

∨:

Exclusive OR

: Inverted data

addr16: 16-bit immediate data or label

jdisp8: Signed 8-bit data (displacement value)

6.1.3 Description of the flag operation field

(Blank): Not affected

0:

Cleared to 0

1:

Set to 1

×:

Set/cleared according to the result

R:

Previously saved value is restored

Data Sheet U14022EJ1V0DS00

21

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