P87C552 datasheet(52/74 Pages) PHILIPS

Part #	P87C552

Description	80C51 8-bit microcontroller 8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM, capture/compare, high I/O, low voltage 2.7V.5.5V, low power

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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52 / 74 page

Philips Semiconductors

Preliminary specification

P87C552

80C51 8-bit microcontroller

8K/256 OTP, 8 channel 10 bit A/D, I2C, PWM,

capture/compare, high I/O, low voltage (2.7V–5.5V), low power

1999 Mar 30

52

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

! SI01 EQUATE LIST

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

! LOCATIONS OF THE SI01 SPECIAL FUNCTION REGISTERS

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

00D8

S1CON

–0xd8

00D9

S1STA

–0xd9

00DA

S1DAT

–0xda

00DB

S1ADR

–0xdb

00A8

IEN0

–0xa8

00B8

IP0

–02b8

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

! BIT LOCATIONS

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

00DD

STA

–0xdd

! STA bit in S1CON

00BD

SI01HP

–0xbd

! IP0, SI01 Priority bit

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

! IMMEDIATE DATA TO WRITE INTO REGISTER S1CON

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

00D5

ENS1_NOTSTA_STO_NOTSI_AA_CR0

–0xd5

! Generates STOP

! (CR0 = 100kHz)

00C5

ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

–0xc5

! Releases BUS and

! ACK

00C1

ENS1_NOTSTA_NOTSTO_NOTSI_NOTAA_CR0

–0xc1

! Releases BUS and

! NOT ACK

00E5

ENS1_STA_NOTSTO_NOTSI_AA_CR0

–0xe5

! Releases BUS and

! set STA

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

! GENERAL IMMEDIATE DATA

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

0031

OWNSLA –0x31

! Own SLA+General Call

! must be written into S1ADR

00A0

ENSI01

–0xa0

! EA+ES1, enable SIO1 interrupt

! must be written into IEN0

0001

PAG1

–0x01

! select PAG1 as HADD

00C0

SLAW

–0xc0

! SLA+W to be transmitted

00C1

SLAR

–0xc1

! SLA+R to be transmitted

0018

SELRB3

–0x18

! Select Register Bank 3

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

! LOCATIONS IN DATA RAM

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

0030

MTD

–0x30

! MST/TRX/DATA base address

0038

MRD

–0x38

! MST/REC/DATA base address

0040

SRD

–0x40

! SLV/REC/DATA base address

0048

STD

–0x48

! SLV/TRX/DATA base address

0053

BACKUP

–0x53

! Backup from NUMBYTMST

! To restore NUMBYTMST in case

! of an Arbitration Loss.

0052

NUMBYTMST

–0x52

! Number of bytes to transmit

! or receive as MST.

0051

SLA

–0x51

! Contains SLA+R/W to be

! transmitted.

0050

HADD

–0x50

! High Address byte for STATE 0

! till STATE 25.

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