Read Only Memory
14
ROM and its peripherals
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Transcript of Read Only Memory
![Page 1: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/1.jpg)
ROM and its peripherals
![Page 2: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/2.jpg)
VDD VDDVDD VDD
C1 C2 C3 C4
R1 R2 R3 R4 C1 C2 C3 C4
R0
R1
R2
R3
1 0 0 0 0 1 0 1
0 1 0 0 0 0 1 1
0 0 1 0 1 0 0 1
0 0 0 1 0 1 1 00
1 1 1 1
0
0 0
0 0
0 0
![Page 3: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/3.jpg)
C1 C2 C3 C4
VDD
R1 R2 R3 R4 C1 C2 C3 C4
0 1 1 1 0 1 0 1
1 0 1 1 0 0 1 1
1 1 0 1 1 0 0 1
1 1 1 0 0 1 1 0
1 1 1 1
R0
R1
R2
R3
0 0 0 00 000 0 0
![Page 4: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/4.jpg)
VDD
VDD
VDD
VDD
NOR based row decoder0 0
1 1
00
A1A2
![Page 5: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/5.jpg)
VDD
VDD
VDD
VDD
NOR based row decoder1 0
0 1
01
A1A2
![Page 6: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/6.jpg)
VDD
VDD
VDD
VDD
NOR based row decoder0 1
1 0
10
A1A2
![Page 7: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/7.jpg)
VDD
VDD
VDD
VDD
NOR based row decoder1 1
0 0
11
A1A2
![Page 8: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/8.jpg)
Flash Memory Structure
![Page 9: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/9.jpg)
Hot Electron injection orFowler-Nordheim tunneling mechanism
![Page 10: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/10.jpg)
Read and Write Operation
![Page 11: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/11.jpg)
NAND and NOR based Memory
![Page 12: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/12.jpg)
Reading data of NAND memory cell
![Page 13: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/13.jpg)
NOR based FLASH
![Page 14: Read Only Memory](https://reader030.fdocuments.us/reader030/viewer/2022032705/55cf913b550346f57b8bd2cc/html5/thumbnails/14.jpg)
NAND based FLASH