83C654 Datasheet, PDF (2/24 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontroller

Philips Semiconductors
CMOS single-chip 8-bit microcontroller
Product specification
83C654
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
BLOCK DIAGRAM
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
FREQUENCY
REFERENCE
COUNTERS
XTAL2 XTAL1
T0
T1
OSCILLATOR
AND
TIMING
PROGRAM
MEMORY
(16K x 8 ROM)
DATA
MEMORY
(256 x 8 RAM)
TWO 16-BIT
TIMER/EVENT
COUNTERS
CPU
I²C SERIAL I/O
SDA _SHARED
WITH
SCL ^{PORT 1}
INTERNAL
INTERRUPTS
64K BYTE BUS
EXPANSION
CONTRTOL
PROGRAMMABLE I/O
PROG SERIAL PORT
FULL DUPLEX UART
SYNCHRONOUS SHIFT
INT0
INT1
EXTERNAL
INTERRUPTS
1998 Jan 06
CONTROL
PARALLEL PORTS,
ADDRESS/DATA BUS
AND I/O PINS
SERIAL IN SERIAL OUT
SHARED WITH
PORT 3
2