Microcontroller (4) | Microcontroller Bus and Memory Expansion
7. Microcontroller Bus and Memory Expansion Data Memory Expansion (SRAM) 6264 is the most commonly used. A0-A12 address lines, D0-D7 data lines. CE chip select OE read enable WE write enable Reading external data RAM timing, MOVX A, @Ri or MOVX A, @DPTR starts reading When low, the eight-bit address data enters the latch, P0 … Read more