80C554 datasheet(57/76 Pages) PHILIPS

57 / 76 page

Philips Semiconductors

Preliminary specification

80C554/83C554/87C554

80C51 8-bit microcontroller – 6 clock operation

16K/512 OTP/ROM/ROMless, 7 channel 10 bit A/D, I2C, PWM,

capture/compare, high I/O, 64L LQFP

2000 Nov 10

!********************************************************************************************************

! MASTER RECEIVER STATE SERVICE ROUTINES

!********************************************************************************************************

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: 40, Previous state was STATE 08 or STATE 10,

SLA+R have been transmitted, ACK received.

! ACTION : DATA will be received, ACK returned.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

mts40

.base

0x140

0140

75D8C5

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr STA, STO, SI set AA

0143

D0D0

pop

psw

reti

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: 48, SLA+R have been transmitted, NOT ACK received.

! ACTION : STOP condition will be generated.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

mts48

.base

0x148

0148

75D8D5

STOP:

mov

S1CON,#ENS1_NOTSTA_STO_NOTSI_AA_CR0

! set STO, clr SI

014B

D0D0

pop

psw

014D

reti

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: 50, DATA have been received, ACK returned.

! ACTION : Read DATA of S1DAT.

DATA will be received, if it is last DATA

then NOT ACK will be returned else ACK will be returned.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

mrs50

.base

0x150

0150

75D018

mov

psw,#SELRB3

0153

A6DA

mov

@r0,S1DAT

! Read received DATA

0155

01C0

ajmp REC1

.sect

mrs50s

.base

0xc0

00C0

D55205

REC1:

djnz

NUMBYTMST,NOTLDAT2

00C3

75D8C1

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_NOTAA_CR0

! clr SI,AA

00C6

8003

sjmp RETmr

00C8

75D8C5

NOTLDAT2:

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr SI, set AA

00CB

RETmr:

inc

00CC

D0D0

pop

psw

00CE

reti

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: 58, DATA have been received, NOT ACK returned.

! ACTION : Read DATA of S1DAT and generate a STOP condition.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

mrs58

.base

0x158

0158

75D018

mov

psw,#SELRB3

015B

A6DA

mov

@R0,S1DAT

015D

80E9

sjmp STOP

80C554 Datasheet(PDF) 57 Page - NXP Semiconductors

80C554 Datasheet(HTML) 57 Page - NXP Semiconductors

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