11 00 0000 0000 - 11 11 1111 1111 (0xC00-0xFFF) Three inputs NAND chip and scheme Scheme used four of the PROM chips and four three-input NAND gates (CS = chip select pins) Scheme to coonect 12 input pins MP address to four PROM 10 address pins == MEMR (Merory Read) 11. You are designing a multi-user interface that stores user preference data on external memory. You decided to use a PIC18F45K20 microcontroller and 24C02C EEPROM memory. Your microcontroller needs to generate a block wave that will act as a clock signal to synchronize data transfer to and from the memory. a) Choose a suitable clock frequency, based on the capabilities of the EEPROM module and the PIC. b) Assume the clock frequency of the PIC is 16 MHz and one instruction cycle lasts 4 clock periods. Further assume that one loop of your algorithm requires 4 instruction cycles. Determine the total delay time for completing a command cycle sent to
A9 A9 A9 0 A10 1 DC 2 A11 3 11. You are designing a multi-user interface that stores user preference data on external memory. You decided to use a PIC18F45K20 microcontroller and 24C02C EEPROM memory. Your microcontroller needs to generate a block wave that will act as a clock signal to synchronize data transfer to and from the memory. a) Choose a suitable clock frequency, based on the capabilities of the EEPROM module and the PIC. Suitable clock frequency is 0-400 kHz (from datasheet) b) Assume the clock frequency of the PIC is 16 MHz and one instruction cycle lasts 4 clock periods. Further assume that one loop of your algorithm requires 4 instruction cycles
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