- published: 22 Feb 2010
- views: 1471
The MCS-48 microcontroller (µC) series, Intel's first microcontroller, was originally released in 1976. Its first members were 8048, 8035 and 8748. Initially this family was produced using NMOS-technology, in the early 1980s it became available in CMOS-technology. It was still manufactured into the 1990s to support older designs that still used it.
The MCS-48 series has a Modified Harvard architecture, with internal or external program ROM and 64–256 bytes of internal (on-chip) RAM. The I/O is mapped into its own address space, separate from programs and data. The 8048 is probably the most prominent member of Intel's MCS-48 family of microcontrollers.
Though the MCS-48 series was eventually replaced by the very popular MCS-51 series, even at around year 2000 it remained quite popular, due to its low cost, wide availability, memory efficient one-byte instruction set, and mature development tools. Because of this it is much used in high-volume consumer electronics devices such as TV sets, TV remotes, toys, and other gadgets where cost-cutting is essential.
While I go I got working this Czechoslovak MCU Tesla MHB8748, clone of Intel 8048 family, with external memory. Due to the multiplexed address+data bus the RTC/NVRAM was only memory I had for this task and it's limited to 128 Bytes of program. I managed to cram there HD44780 LCD driver with some short scrolling text. Programmed with SB-Assembler. Next to it is Intel P8042AH with Xicor 2KB EEPROM (now that's more space!) runing just minimalistic test blinker with only 5 instructions and 8 Bytes. It works :) 8048, which belongs to MCS-48 family, was the first Intel microcontroller introduced in 1976 and afaik first widely successful. Two years later the MCS-41 family was introduced, 8042 being improved model with double memory compared to the 8041. Thanks to external access I can attach me...
1. 8051/AT89S52 based SMOKE DETECTOR and FIRE ALARM SYSTEM 2. circuit diagram and code for smoke detector using at89s52 3. Theory of 8051/AT89S52 based SMOKE DETECTOR and FIRE 4. SMS based Fire detection system using Smoke and Temperature sensor 5. fire alarm system circuit design using 8051 microcontroller 6. microcontroller based smoke alarm system 7. Fire Alarm System using AVR Microcontroller 8. MICROCONTROLLER BASED ON FIRE ALARM SYSTEM 9. Interfacing PIR sensor to 8051 – Electronic Circuits and Diagram 10. smoke detector using 8051 microcontroller ppt - Full Report 11. block diagram for smoke detector using 8051 microcontroller 12. GSM Based Home Security System Working with Applications 13. Design Of GSM Based Smoke Detection And Temperature Monitoring 14. Microcontrol...