P87C660X2 PHILIPS [NXP Semiconductors], P87C660X2 Datasheet - Page 55

• Manufacturer Part Number: P87C660X2
• Description: 80C51 8-bit microcontroller family
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
00D8
00D9
00DA
00DB
00A8
00B8
00DD
00BD
00D5
00C5
00C1
00E5
0031
00A0
0001
00C0
00C1
0018
0030
0038
0040
0048
0053
0052
0051
0050
2003 Oct 02
80C51 8-bit microcontroller family
RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33
MHz), two 400KB I
2
C interfaces
!********************************************************************************************************
! SIO1 EQUATE LIST
!********************************************************************************************************
!********************************************************************************************************
! LOCATIONS OF THE SIO1 SPECIAL FUNCTION REGISTERS
!********************************************************************************************************
S1CON
S1STA
S1DAT
S1ADR
IEN0
IP0
!********************************************************************************************************
! BIT LOCATIONS
!********************************************************************************************************
STA
SIO1HP
!********************************************************************************************************
! IMMEDIATE DATA TO WRITE INTO REGISTER S1CON
!********************************************************************************************************
ENS1_NOTSTA_STO_NOTSI_AA_CR0
ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0
ENS1_NOTSTA_NOTSTO_NOTSI_NOTAA_CR0
ENS1_STA_NOTSTO_NOTSI_AA_CR0
!********************************************************************************************************
! GENERAL IMMEDIATE DATA
!********************************************************************************************************
OWNSLA –0x31
ENSIO1
PAG1
SLAW
SLAR
SELRB3
!********************************************************************************************************
! LOCATIONS IN DATA RAM
!********************************************************************************************************
MTD
MRD
SRD
STD
BACKUP
NUMBYTMST
SLA
HADD
16 KB OTP/ROM, 512B
–0xd8
–0xd9
–0xda
–0xdb
–0xa8
–02b8
–0xdd
–0xbd
–0xa0
–0x01
–0xc0
–0xc1
–0x18
–0x30
–0x38
–0x40
–0x48
–0x53
–0x52
–0x51
–0x50
55
! STA bit in S1CON
! IP0, SIO1 Priority bit
–0xd5
–0xc5
–0xc1
–0xe5
! Own SLA+General Call
! must be written into S1ADR
! EA+ES1, enable SIO1 interrupt
! must be written into IEN0
! select PAG1 as HADD
! SLA+W to be transmitted
! SLA+R to be transmitted
! Select Register Bank 3
! MST/TRX/DATA base address
! MST/REC/DATA base address
! SLV/REC/DATA base address
! SLV/TRX/DATA base address
! Backup from NUMBYTMST
! To restore NUMBYTMST in case
! of an Arbitration Loss.
! Number of bytes to transmit
! or receive as MST.
! Contains SLA+R/W to be
! transmitted.
! High Address byte for STATE 0
! till STATE 25.
! Generates STOP
! (CR0 = 100kHz)
! Releases BUS and
! ACK
! Releases BUS and
! NOT ACK
! Releases BUS and
! set STA
P8xC660X2/661X2
Product data