1. MEMORY/SRAM SIMULATOR LAB
ECE243
MEMORY/SRAM SIMULATOR LAB

2. Simulator of a small SRAM Chip
Byte addressable!
each address represents one bytes
IMPORTANT PINS:
!CE: chip enable
!OE: output enable
!WE: write enable
!BE3, !BE2, !BE1, !BE0
Byte enables
a3-a0: address lines
4 addr bits => 2^4 locations
= 16 locations = 16*1B = 16B total

3. write 0xabcd1234 to addr 0x4 !CE:0; !OE:1;
!BE3:0; !BE2:0; !BE1:0; !BE0:0;
a3-a0: 0x4; data:0xabcd1234
!WE:0

4. write byte 0x25 at addr 0x5 !CE:0; !OE:1;
!BE3:1; !BE2:1; !BE1:1; !BE0:0;
a3-a0: 0x5; data = 0xXXXXXX25
!WE:0

5. read halfword at addr 0x6 !CE:0; !WE:1;
!BE3:1; !BE2:1; !BE1:0; !BE0:0;
a3-a0: 0x6; data:0xXXXXXXXX
!OE: 0