12973_features of 8085 microprocessor ppt
TRANSCRIPT
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8-bit microprocessor i.e. accepts 8 bit data simultaneously Single chip N-MOS device implemented with 6500 transistors Require single +5V power supply Clock frequency in the range of 3MHz-5MHz 8-bit data bus and 16-bit address bus 74 instructions with following addressing modes: Register,
direct, immediate, indirect and implied Provides 16 address lines hence access 64K Bytes of memory
, program as well as data memory Provides 5 hardware interrupts : TRAP , RST 7.5 , RST 6.5 ,
RST 5.5 and INTR. Provides on chip clock generator hence does not require
external clock generator
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Perform arithmetic and logical operations Provides control signals to control the bus cycles Provides two serials I/O lines viz SOD and SID
hence serial peripherials can be interfaced with 8085 directly
Supports mechanism that allow 8085 to increase its interrupt handling capacity
Provides 8-bit accumulator , flag register , 6 general purpose register(B,C,D,E,H,L) , 2 special purpose 16-bit registers(SP,PC)
Data bus(D0-D7) multiplexed with lower 8 bit address bus(A0-A7) hence requires external hardware to separate data lines from address line