PIN Configuration Logic Symbol, Block Diagram

8048/8035L/8748/8748·6/8035

SINGLE COMPONENT 8·BIT MICROCOMPUTER

•8048 Mask Programmable ROM

•8035L CPU Only with Power Down Mode

•8748 User Programmable EPROM

•8748·6 Up to 55C 8748

•8035 CPU Only (No Power Down Mode)

•8·BITCPU, ROM, RAM, 1/0 in Single Package

•Interchangeable ROM and EPROM Versions

•Single 5V Supply

•2.5 fJsec and 5.0 fJsec Cycle Versions All Instructions 1 or 2 Cycles.

•Over 90 Instructions: 70% Single Byte

•1K x 8 ROMIEPROM

64x 8 RAM

27110 Lines

•Interval TimerlEvent Counter

•Easily Expandable Memory and 1/0

•Compatible with 808018085 Series, Peripherals

•Single Level Interrupt

The Intel 8048/8748/8743-6/8748-B/8035/B035-8 are totally self-sufficient, 8-blt parallel computers fabricated on single silicon chips using Intel'sN-channel silicon gate MOS process.

The B048 contains a 1K x B program memory, a 64 x B RAM data memory, 27 I/O lines, and an 8-blt timer/counter in addi- tion to on-board oscillator and clock circuits. For systems that require extra capability, the 8048 can be expanded using standard memories and MeS-BO /MeS-B5 peripherals. The 8035 Is the equivalent of an 8048 without program memory and can be used with external ROM and RAM. The B035L has the RAM power-down mode of the 804B while the 8035 does not. The 8748-6 is a 6 MHz B74B up to 55e. To reduce development problems to a minimum and provide maximum flexi- bility, three interchangeable pin-compatible versions of this single component microcomputer exist: the 8748 with user- programmable and erasable EPROM program memory for prototype and preproduction systems, the B04B with factory- programmed mask ROM program memory for low cost, high VOlume production, and the B035 without program memory for use with external program memories.

These microcomputers are designed to be efficient controllers as weil as arithmetic processors. They have extensive bit handling capability as weli as facilities for both binary and BeD arithmetic. Efficient use of program memory results from an instruction set consisting mostly of single bit instructions and no instructions over 2 bytes in length.