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83C453 Datasheet, PDF (2/26 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 8K/256 OTP/ROM, expanded I/O | |||
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Philips Semiconductors
80C51 8-bit microcontroller family
8K/256 OTP/ROM, expanded I/O
Preliminary specification
83C453/87C453
DESCRIPTION
The Philips 8XC453 is an I/O expanded single-chip microcontroller
fabricated with Philips high-density CMOS technology. Philips
epitaxial substrate minimizes latch-up sensitivity.
The 8XC453 is a functional extension of the 87C51 microcontroller
with three additional I/O ports and four I/O control lines. The 8XC453
is available in 68-pin LCC packages. Four control lines associated
with port 6 facilitate high-speed asynchronous I/O functions.
The 87C453 includes an 8k à 8 EPROM, a 256 à 8 RAM, 56 I/O
lines, two 16-bit timer/counters, a seven source, two priority level,
nested interrupt structure, a serial I/O port for either a full duplex
UART, I/O expansion, or multi-processor communications, and
on-chip oscillator and clock circuits.
The 87C453 has two software selectable modes of reduced activity
for further power reduction; idle mode and power-down mode. Idle
mode freezes the CPU while allowing the RAM, timers, serial port,
and interrupt system to continue functioning. Power-down mode
freezes the oscillator, causing all other chip functions to be
inoperative while maintaining the RAM contents.
FEATURES
⢠80C51 based architecture
⢠Seven 8-bit I/O ports
⢠Port 6 features:
â Eight data pins
â Four control pins
â Direct MPU bus interface
â ISA Bus Interface
â Parallel printer interface
â IBF and OBF interrupts
â A flag latch on host write
⢠On the microcontroller:
â 8k à 8 EPROM
Quick pulse programming algorithm
Two-level program security system
â 256 Ã 8 RAM
â Two 16-bit counter/timers
â Two external interrupts
⢠External memory addressing capability
â 64k ROM and 64k RAM
⢠Low power consumption:
â Normal operation: less than 24mA at 5V, 16MHz
â Idle mode
â Power-down mode
⢠Reduced EMI
⢠Full-duplex enhanced UART
â Framing error detection
â Automatic address recognition
ORDERING INFORMATION
EPROM1
ROM
P87C453EBAA
OTP P83C453EBAA
NOTE:
1. OTP = One-Time Programmable EPROM.
TEMPERATURE °C AND PACKAGE
68âPin Plastic Leaded Chip Carrier, 0 to +70
FREQ.
(MHz)
3.5 to 16
PKG. DWG
#
SOT188-3
1998 Apr 23
2
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