Page 4 - Digital Electronics by harish

UNIT - IV
MEMORY DEVICES
4.1 Classification of memories 104
4.2 RAM organization 105
4.3 Static RAM 107
4.3.1 Bipolar Static RAM Cell 107
4.3.2 MOS Static RAM Cell 108
4.4 Dynamic RAM 109
4.5 SDRAM 111
4.6 DDR SDRAM 112
4.7 Read only memory 113
4.8 ROM organization 114
4.9 Expanding memory 115
4.9.1 Expanding word size 115
4.9.2 Expanding memory capacity 116
4.10 PROM 116
4.11 EPROM 118
4.12 EEPROM 119
4.13 Flash memory 120
4.14 Anti fuse technology 121

UNIT – V
MICROPROCESSOR – 8085
5.1 Introduction to microprocessor 123
5.1.1 Evolution of microprocessor 124
5.1.2 8085 Microprocessor 125
5.1.3 Architecture 129
5.2 Instruction set and Addressing modes 133
5.2.1 Instruction format 133
5.2.2 Classification of instructions based on size 133
5.2.3 Classification of instructions based on function 134
5.2.4 Instruction set 135
5.2.4.1 Data transfer instructions 135
5.4.2.2 Arithmetic instructions 137
5.2.4.3 Logic and bit manipulation instructions 139
5.2.4.4 Branch instructions 141
5.2.4.5 Machine control instructions 144
5.2.5 Addressing modes 145
5.3 Machine cycle and Instruction cycle 148
5.3.1 Machine cycle 148
5.3.1.1 Opcode fetch 148
5.3.1.2 Memory read 150
5.3.1.3 Memory write 151
5.3.1.4 I/O read 152
5.3.1.5 I/O write 153

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