INTEGRATED CIRCUITS 8XC54/58 8XC51FA/FB/FC/80C51FA 8XC51RA+/RB+/RC+/RD+/80C51RA + 80C51 8-bit microcontroller family 8K64K/2561K OTP/ROM/ROMless, low voltage (2.7V5.5V), low power, high speed (33 MHz) Product specification 2000 Aug 07 Replaces datasheet 8XC52/54/58/80C32 8XC51FA/FB/FC/80C51FA 8XC51RA+/RB+/RC+/RD+/80C51RA + of 1999 Apr 01 Philips Semiconductors Product specification 80C51 8-bit microcontroller family 8XC54/58 8K64K/2561K OTP/ROM/ROMless, low voltage (2.7V5.5V), 8XC51FA/FB/FC/80C51FA low power, high speed (33 MHz) 8XC51RA+/RB+/RC+/RD+/80C51RA+ DESCRIPTION FEATURES Three different Single-Chip 8-Bit Microcontroller families are 80C51 Central Processing Unit presented in this datasheet: Speed up to 33 MHz 8XC54/8XC58 Full static operation 80C51FA/8XC51FA/8XC51FB/8XC51FC Operating voltage range: 2.7 V to 5.5 V 16 MHz 80C51RA+/8XC51RA+/8XC51RB+/8XC51RC+/8XC51RD+ Security bits: For applications requiring 4K ROM/EPROM, see the 8XC51/80C31 ROM 2 bits 8-bit CMOS (low voltage, low power, and high speed) OTPEPROM 3 bits microcontroller families datasheet. Encryption array 64 bytes All the families are Single-Chip 8-Bit Microcontrollers manufactured in advanced CMOS process and are derivatives of the 80C51 RAM expandable to 64K bytes microcontroller family. All the devices have the same instruction set as the 80C51. 4 level priority interrupt These devices provide architectural enhancements that make them 6 or7 interrupt sources, depending on device applicable in a variety of applications for general control systems. Four 8-bit I/O ports ROM/EPROM RAM Size Programmable Hardware Full-duplex enhanced UART Memory Size (X by 8) Timer Counter Watch Dog Framing error detection (X by 8) (PCA) Timer Automatic address recognition 80C31/8XC51 Power control modes 0K/4K 128 No No Clock can be stopped and resumed 8XC54/58 Idle mode 0K/8K/16K/32K 256 No No Power down mode 80C51FA/8XC51FA/FB/FC Programmable clock out 0K/8K/16K/32K 256 Yes No Second DPTR register 80C51RA+/8XC51RA+/RB+/RC+ Asynchronous port reset 0K/8K/16K/32K 512 Yes Yes Low EMI (inhibit ALE) 8XC51RD+ 64K 1024 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. 2 2000 Aug 07 853-2068 24292