80C554 datasheet(55/76 Pages) PHILIPS

55 / 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 STATE SERVICE ROUTINES

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

! State 08 and State 10 are both for MST/TRX and MST/REC.

! The R/W bit decides whether the next state is within

! MST/TRX mode or within MST/REC mode.

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

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

! STATE

: 08, A, START condition has been transmitted.

! ACTION : SLA+R/W are transmitted, ACK bit is received.

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

.sect

mts8

.base

0x108

0108

8551DA

mov

S1DAT,SLA

! Load SLA+R/W

010B

75D8C5

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr SI

010E

01A0

ajmp INITBASE1

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

! STATE

: 10, A repeated START condition has been

transmitted.

! ACTION : SLA+R/W are transmitted, ACK bit is received.

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

.sect

mts10

.base

0x110

0110

8551DA

mov

S1DAT,SLA

! Load SLA+R/W

0113

75D8C5

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr SI

010E

01A0

ajmp INITBASE1

.sect

ibase1

.base

0xa0

00A0

75D018

INITBASE1:

mov

psw,#SELRB3

00A3

7930

mov

r1,#MTD

00A5

7838

mov

r0,#MRD

00A7

855253

mov

BACKUP,NUMBYTMST

! Save initial value

00AA

D0D0

pop

psw

00AC

reti

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

! MASTER TRANSMITTER STATE SERVICE ROUTINES

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

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

! STATE

: 18, Previous state was STATE 8 or STATE 10, SLA+W have been transmitted,

ACK has been received.

! ACTION : First DATA is transmitted, ACK bit is received.

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

.sect

mts18

.base

0x118

0118

75D018

mov

psw,#SELRB3

011B

87DA

mov

S1DAT,@r1

011D

01B5

ajmp CON

80C554 Datasheet(PDF) 55 Page - NXP Semiconductors

80C554 Datasheet(HTML) 55 Page - NXP Semiconductors

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