Find the on-chip program ROM size in $K$ for the AVR chips with the following address ranges: $\newline$ (a) $00000$ - $3FF$ $\newline$ (b) $00000$ - $7FF$ $\newline$ (c) $00000$ - $S7FFFF$ $\newline$ (d) $00000$ - $FFFFF$ $\newline$ (c) $00000$ - $1FFFFF$ $\newline$ (f) $00000$ - $3FFFFF$ $\newline$ (g) $00000$ - $5FFF$ $\newline$ (h) $00000$ - $BFFFF$

Full solution

Q. Find the on-chip program ROM size in

K

for the AVR chips with the following address ranges:

\newline

(a)

00000

3FF

\newline

(b)

00000

7FF

\newline

(c)

00000

S7FFFF

\newline

(d)

00000

FFFFF

\newline

(c)

00000

1FFFFF

\newline

(f)

00000

3FFFFF

\newline

(g)

00000

5FFF

\newline

(h)

00000

BFFFF

Step (a): (a) $\$00000-\$3FF$ Range: $\$3FF - \$00000 + 1 = 1024$ addresses Size in K: $\frac{1024}{1024} = 1K$
Step (b): (b) $\$00000-\$7FF$ Range: $\$7FF - \$00000 + 1 = 2048$ addresses Size in K: $\frac{2048}{1024} = 2K$
Step (c): (c) $\$00000-\$7FFFF$ Range: $\$7FFFF - \$00000 + 1 = 524288$ addresses Size in K: $\frac{524288}{1024} = 512K$
Step (d): (d) $\$00000-\$FFFFF$ Range: $\$FFFFF - \$00000 + 1 = 1048576$ addresses Size in K: $\frac{1048576}{1024} = 1024K$
Step (e): (e) $\$00000-\$1FFFFF$ Range: $\$1FFFFF - \$00000 + 1 = 2097152$ addresses Size in K: $\frac{2097152}{1024} = 2048K$
Step (f): (f) $\$00000-\$3FFFFF$ Range: $\$3FFFFF - \$00000 + 1 = 4194304$ addresses Size in K: $\frac{4194304}{1024} = 4096K$
Step (g): (g) $\$00000-\$5FFF$ Range: $\$5FFF - \$00000 + 1 = 24576$ addresses Size in K: $\frac{24576}{1024} = 24K$
Step (h): (h) $\$00000-\$BFFFF$ Range: $\$BFFFF - \$00000 + 1 = 786432$ addresses Size in K: $\frac{786432}{1024} = 768K$