Featured Post

High CMRR Instrumentation Amplifier (Schematic and Layout) design for biomedical applications

Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of

WAP to move a block of data within the internal RAM

Org 0h
start1: mov r0,#40h    ;r0 pointed to internal RAM 40h
mov r1,#30h             ;r1 pointing to internal RAM 030h
mov r2,#5                   ;r2 loaded with no. of elements in the array
Start:
mov a,@r0                ;data transfer
mov @r1,a
inc r0
inc r1
djnz r2,start                   ;decrement r2,if not equal to 0,continue with data
                                       ;transfer process.
Sjmp Start1
end