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P83CL781 Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. P83CL781
Description  Low voltage 8-bit microcontrollers with UART and I2C-bus
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo 

 
 5 page
background image
1997 Mar 14
5
Philips Semiconductors
Product specification
Low voltage 8-bit microcontrollers with
UART and I2C-bus
P83CL781; P83CL782
5
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MLA601
3
3
1
2
0
3
3
RD
WR
PSEN
XTAL2
XTAL1
AD0 to 7
A8 to 15
EA
3
3
3
3
SDA
SCL
DD
V
RXD
TXD
P3
P2
P1
P0
T0
T1
INT0
INT1
0
1
alternative function of Port 0
alternative functions of Port 1
2
3
alternative function of Port 2
alternative function of Port 3
PARALLEL
I/O PORTS
AND
EXTERNAL
BUS
SERIAL
UART
PORT
16-BIT
TIMER/
EVENT
COUNTER
TWO
16-BIT
TIMER/
EVENT
COUNTERS
(T0, T1)
80C51
core
excluding
ROM/RAM
CPU
PROGRAM
MEMORY
DATA
MEMORY
8-bit internal bus
16 kbyte
ROM
256 byte
RAM
SS
V
ALE
I2C
INTERFACE
P83CL781
P83CL782
RST
1
T2EX
T2
1
1




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