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INTEGRATED CIRCUITS
8XC54/58 8XC51FA/FB/FC/80C51FA 8XC51RA+/RB+/RC+/RD+/80C51RA +
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V), low power, high speed (33 MHz)
Product specification
Replaces datasheet 8XC52/54/58/80C32 8XC51FA/FB/FC/80C51FA 8XC51RA+/RB+/RC+/RD+/80C51RA + of 1999 Apr 01
2000 Aug 07
Philips Semiconductors
Philips Semiconductors
80C51 8-bit microcontroller family 8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V), low power, high speed (33 MHz)
Product specification
8XC54/58 8XC51FA/FB/FC/80C51FA 8XC51RA+/RB+/RC+/RD+/80C51RA+
DESCRIPTION
Three different Single-Chip 8-Bit Microcontroller families are presented in this datasheet:
• 8XC54/8XC58 • 80C51FA/8XC51FA/8XC51FB/8XC51FC • 80C51RA+/8XC51RA+/8XC51RB+/8XC51RC+/8XC51RD+
For applications requiring 4K ROM/EPROM, see the 8XC51/80C31 8-bit CMOS (low voltage, low power, and high speed) microcontroller families datasheet.
All the families are Single-Chip 8-Bit Microcontrollers manufactured in advanced CMOS process and are derivatives of the 80C51 microcontroller family. All the devices have the same instruction set as the 80C51.
These devices provide architectural enhancements that make them applicable in a variety of applications for general control systems.
ROM/EPROM Memory Size
(X by 8)
RAM Size (X by 8)
Programmable Timer Counter
(PCA)
80C31/8XC51
0K/4K
128 No
8XC54/58
0K/8K/16K/32K
256
No
80C51FA/8XC51FA/FB/FC
0K/8K/16K/32K
256
Yes
80C51RA+/8XC51RA+/RB+/RC+
0K/8K/16K/32K
512
Yes
8XC51RD+
64K
1024
Yes
Hardware Watch Dog
Timer
No
No
No
Yes
Yes
The ROMless devices, 80C51FA, and 80C51RA+ can address up to 64K of external memory. All the devices have four 8-bit I/O ports, three 16-bit timer/event counters, a multi-source, four-priority-level, nested interrupt structure, an enhanced UART and on-chip oscillator and timing circuits. For systems that require extra memory capability up to 64k bytes, each can be expanded using standard TTL-compatible memories and logic.
Its added features make it an even more powerful microcontroller for applications that require pulse width modulation, high-speed I/O and up/down counting capabilities such as motor control. It also has a more versatile serial channel that facilitates multiprocessor communications.
FEATURES
• 80C51 Central Processing Unit • Speed up to 33 MHz • Full static operation • Operating voltage range: 2.7 V to 5.5 V @ 16 MHz • Security bits:
– ROM – 2 bits
– OTP–EPROM – 3 bits
• Encryption array – 64 bytes • RAM expandable to 64K bytes • 4 level priority interrupt • 6 or7 interrupt sources, depending on device • Four 8-bit I/O ports • Full-duplex enhanced UART
– Framing error detection
– Automatic address recognition
• Power control modes
– Clock can be stopped and resumed
– Idle mode
– Power down mode
• Programmable clock out • Second DPTR register • Asynchronous port reset • Low EMI (inhibit ALE)
2000 Aug 07
2 853-2068 24292
Philips Semiconductors
80C51.
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