AN87C54

IC MCU 8Bit 16KB OTP 44PLCC

MEMORY ORGANIZATION

PROGRAM MEMORY: Up to 16 Kbytes of the program memory can reside in the on-chip EPROM. The device can also address up to 64K of program memory external to the chip.

DATA MEMORY: This microcontroller has a 256 x 8 on-chip RAM. In addition it can address up to 64 Kbytes of external data memory.

The 87C54 is a single-chip control-oriented microcontroller which is fabricated on Intel’s reliable CHMOS EPROM technology. Being a member of the MCS-51 family, the 87C54 uses the same powerful instruction set, has the same architecture, and is pin-for-pin compatible with the existing MCS-51 family of products. The 87C54 is an enhanced version of the 87C51FB. Its added features of 16 Kbytes of program memory make it an even more powerful microcontroller for applications that require High Speed I/O and up/down counting capabilities such as brake and traction control.

■ Extended Automotive Temperature Range b40§C to a125§C Ambient

■ High Performance CHMOS EPROM

■ Three 16-Bit Timer/Counters

■ One-to-Three Level Program/Data Lock System

■ 16K On-Chip EPROM/ROM

■ 256 Bytes of On-Chip Data RAM

■ Quick Pulse Programming Algorithm

■ Boolean Processor

■ 32 Programmable I/O Lines

■ 7 Interrupt Sources

■ Programmable Serial Channel with:

   - Framing Error Detection

   - Automatic Address Recognition

■ TTL and CMOS Compatible Logic Levels

■ 64K External Program Memory Space

■ 64K External Data Memory Space

■ MCS®-51 Compatible Instruction Set

■ Power Saving Idle and Power Down Modes

■ ONCE On-Circuit Emulation Mode

■ RFI Reduction Mode

■ Available in 12 MHz, 16 MHz and 20 MHz Versions

■ Available in PLCC and DIP Packages

   See Packaging Spec., Order Ý231369