NationalSemi > NatSemiINS8040N-6

Modified: May 30, 2005, 6:12 pm

Manufacturer:	National Semiconductor
Model:	INS8040N-6
Speed:	6Mhz
Type:	MCS-48
Data Code:	8718
Introduced:	1976
Transistors:	??
Package:	40PDIP
Process:	3 Micron
Architecture:	8 bit MCU
Used in:	Control applications
Description:	The Intel 8048 microcontroller, Intel's first µC, was used in the Magnavox Odyssey² video game console and (in its 8042 variant) in the original IBM PC keyboard. The 8048 is probably the most prominent member of Intel's MCS-48 familiy of microcontrollers. It was inspired by, and is somewhat similar to, t he Fairchild F8 microprocessor. A 8048-family chip with UV EPROM, the 8749. This one is made by NEC.The 8048 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. Though the 8048 was eventually replaced by the very popular Intel 8051, even at the turn of the millennium it remains 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. MCS-48 Device -Internal Memory- ------------------------------ 8050 -4Kx8 ROM --256x8 RAM 8049 -2Kx8 ROM --128x8 RAM 8749 -2Kx8 EPROM 128x8 RAM 8048 -1Kx8 ROM --64x8 RAM 8748 -1Kx8 EPROM 64x8 RAM 8040 -none ------256x8 RAM 8039 -none ------128x8 RAM 8038 -none ------64x8 RAM 8035 -none ------64x8 RAM ----------------------- National was an Intel second source.