P89C660 Philips Semiconductors, P89C660 Datasheet - Page 5

• Manufacturer Part Number: P89C660
• Description: 80C51 8-bit Flash microcontroller family
• Manufacturer: Philips Semiconductors

Philips Semiconductors
BLOCK DIAGRAM (CPU-ORIENTED)
2002 Oct 28
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
EA/V
PSEN
RST
ALE
PP
V
V
CC
SS
XTAL1
CONTROL
REGISTER
TIMING
RAM ADDR
REGISTER
OSCILLATOR
AND
B
PD
XTAL2
RAM
ACC
TMP2
DRIVERS
P1.0–P1.7
PORT 1
PORT 1
LATCH
PSW
DRIVERS
P0.0–P0.7
PORT 0
PORT 0
LATCH
ALU
SCL
SDA
TMP1
I
2
C
5
TIMERS
P.C.A.
SFRs
P2.0–P2.7
DRIVERS
PORT 2
PORT 2
LATCH
P89C660/P89C662/P89C664/
POINTER
DRIVERS
STACK
P3.0–P3.7
PORT 3
PORT 3
LATCH
FLASH
8
PROGRAM
REGISTER
PROGRAM
MULTIPLE
ADDRESS
COUNTER
MENTER
DPTR’S
INCRE-
BUFFER
PC
8
P89C668
su01089
Product data
16