P87C660X2 PHILIPS [NXP Semiconductors], P87C660X2 Datasheet - Page 53

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

Philips Semiconductors
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
NUMBYTMST
BACKUP
S1CON
S1ADR
S1DAT
S1STA
HADD
PSW
MRD
IEN0
SRD
MTD
STD
SLA
IPO
P1
16 KB OTP/ROM, 512B
CR2
P1.7
EA
ORIGINAL VALUE OF NUMBYTMST
NUMBER OF BYTES AS MASTER
SLA+R/W TO BE TRANSMITTED TO SLA
HIGHER ADDRESS BYTE INTERRUPT ROUTINE
SLAVE TRANSMITTER DATA RAM
SLAVE RECEIVER DATA RAM
MASTER RECEIVER DATA RAM
MASTER TRANSMITTER DATA RAM
SPECIAL FUNCTION REGISTERS
INTERNAL DATA RAM
ENS1
Figure 29. SIO1 Data Memory Map
P1.6
STA
PS1
ES1
ST0
R1
R0
53
SI
AA
0
CR!
0
CR0
SU00978
GC
0
DB
DA
D9
D8
D0
B8
AB
90
80
7F
53
52
51
50
4F
48
40
38
30
19
18
00
P8xC660X2/661X2
Product data