80C554 datasheet(56/76 Pages) PHILIPS

56 / 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

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

! STATE

: 20, SLA+W have been transmitted, NOT ACK has been received

! ACTION : Transmit STOP condition.

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

.sect

mts20

.base

0x120

0120

75D8D5

mov

S1CON,#ENS1_NOTSTA_STO_NOTSI_AA_CR0

! set STO, clr SI

0123

D0D0

pop

psw

0125

reti

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

! STATE

: 28, DATA of S1DAT have been transmitted, ACK received.

! ACTION : If Transmitted DATA is last DATA then transmit a STOP condition,

else transmit next DATA.

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

.sect

mts28

.base

0x128

0128

D55285

djnz

NUMBYTMST,NOTLDAT1

! JMP if NOT last DATA

012B

75D8D5

mov

S1CON,#ENS1_NOTSTA_STO_NOTSI_AA_CR0

! clr SI, set AA

012E

01B9

ajmp RETmt

.sect

mts28sb

.base

0x0b0

00B0

75D018

NOTLDAT1:

mov

psw,#SELRB3

00B3

87DA

mov

S1DAT,@r1

00B5

75D8C5

CON:

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr SI, set AA

00B8

inc

00B9

D0D0

RETmt

pop

psw

00BB

reti

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

! STATE

: 30, DATA of S1DAT have been transmitted, NOT ACK received.

! ACTION : Transmit a STOP condition.

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

.sect

mts30

.base

0x130

0130

75D8D5

mov

S1CON,#ENS1_NOTSTA_STO_NOTSI_AA_CR0

! set STO, clr SI

0133

D0D0

pop

psw

0135

reti

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

! STATE

: 38, Arbitration lost in SLA+W or DATA.

! ACTION : Bus is released, not addressed SLV mode is entered.

A new START condition is transmitted when the IIC bus is free again.

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

.sect

mts38

.base

0x138

0138

75D8E5

mov

S1CON,#ENS1_STA_NOTSTO_NOTSI_AA_CR0

013B

855352

mov

NUMBYTMST,BACKUP

013E

01B9

ajmp RETmt

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