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83C654 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 83C654
Description  CMOS single-chip 8-bit microcontroller
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

83C654 Datasheet(HTML) 2 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
83C654
CMOS single-chip 8-bit microcontroller
2
1998 Jan 06
DESCRIPTION
The P83C654 Single-Chip 8-Bit
Microcontroller is manufactured in an
advanced CMOS process and is a derivative
of the 80C51 microcontroller family. The
83C654 has the same instruction set as the
80C51. Two versions of the derivative exist:
83C654 — 16k bytes mask programmable
ROM
87C654 — EPROM version (described in a
separate data sheet)
This device provides architectural
enhancements that make it applicable in a
variety of applications for general control
systems. The 83C654 contains a non-volatile
16k
× 8 read-only program memory, a volatile
256
× 8 read/write data memory, four 8-bit I/O
ports, two 16-bit timer/event counters
(identical to the timers of the 80C51), a
multi-source, two-priority-level, nested
interrupt structure, an I2C interface, UART
and on-chip oscillator and timing circuits. For
systems that require extra capability, the
8XC654 can be expanded using standard
TTL compatible memories and logic.
The device also functions as an arithmetic
processor having facilities for both binary and
BCD arithmetic plus bit-handling capabilities.
The instruction set consists of over 100
instructions: 49 one-byte, 45 two-byte and 17
three-byte. With a 16(24)MHz crystal, 58% of
the instructions are executed in 0.75(0.5)
µs
and 40% in 1.5(1)
µs. Multiply and divide
instructions require 3(2)
µs.
FEATURES
80C51 central processing unit
16k × 8 ROM expandable externally to
64k bytes
256 × 8 RAM, expandable externally to
64k bytes
Two standard 16-bit timer/counters
Four 8-bit I/O ports
I2C-bus serial I/O port with byte oriented
master and slave functions
Full-duplex UART facilities
Power control modes
– Idle mode
– Power-down mode
ROM code protection
Extended frequency range: 3.5 to 24 MHz
Three operating ambient temperature
ranges:
0 to +70
°C
–40 to +85
°C
–40 to +125
°C
BLOCK DIAGRAM
64K BYTE BUS
EXPANSION
CONTRTOL
PROG SERIAL PORT
FULL DUPLEX UART
SYNCHRONOUS SHIFT
PROGRAMMABLE I/O
CPU
OSCILLATOR
AND
TIMING
PROGRAM
MEMORY
DATA
MEMORY
(256 x 8 RAM)
TWO 16-BIT
TIMER/EVENT
COUNTERS
I2C SERIAL I/O
SDA
SCL
SHARED
WITH
PORT 1
T0
T1
COUNTERS
XTAL2
XTAL1
FREQUENCY
REFERENCE
INTERNAL
INTERRUPTS
EXTERNAL
INTERRUPTS
CONTROL
PARALLEL PORTS,
ADDRESS/DATA BUS
AND I/O PINS
SERIAL IN
SERIAL OUT
SHARED WITH
PORT 3
(16K x 8 ROM)
INT0
INT1


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