Embedded System -- Day 3

Embedded System -- Day 3

8051 supports external memory interface.

ARM

-- M3 [ Only Microcontroller ] , generally used ARM7

-- A8 [ ARM9 ]

-- R [ real time critical applications]

Multimedia applications : TI Da vince Processors.

Shifting any number of Bits in single cycle : Barell shifters for fast calculation in DSP processors.

PWM is used for simple audio feeding the PWM using RC circuit.

8051 - Storage Class Specifier :

-- Code : Program Memory(64Kbytes) ; accessed by MOVC@A+DPTR

-- data : Directly addressible internal memory

-- bdata : bit adrresible

-- idata : internal

-- xdata : external data memory.

Static Address Number is used for Interrupt in 8051 and Vector Table Method is used in ARM.

Syncronous Transfer : clock transmited along with data.

Asyncronous Transfer : No clock is transmitted , in UART , we need to manually synchronize.

Magic Lt - debugger for JTAG