memory interfacing
DESCRIPTION
Memory Interfacing. NAND (or any gate ) As decoder. ‘138 ( 3x8 decoder). ‘138 ( 3x8 decoder). ‘139 ( dual 2x4 decoder). ‘139 ( dual 2x4 decoder). Programmable Decoders. We can Use PLA,PAL,GAL,FPGA,… Example PAL16L8 10 input pins 2 output pins ( active low) 10 programmable pins. - PowerPoint PPT PresentationTRANSCRIPT
Memory Interfacing
NAND (or any gate ) As decoder
‘138 ( 3x8 decoder)
‘138 ( 3x8 decoder)
‘139 ( dual 2x4 decoder)
‘139 ( dual 2x4 decoder)
Programmable Decoders
• We can Use PLA,PAL,GAL,FPGA,…
• Example PAL16L8– 10 input pins– 2 output pins ( active low)– 10 programmable pins
Two Banks of memory
Two Banks of memory
Two Banks of memory
Two Banks of memory
