25LC512-ESLASHMF datasheet(7/36 Pages) MICROCHIP

tên linh kiện	25LC512-E/MF

Giải thích chi tiết về linh kiện	512 Kbit SPI Bus Serial EEPROM

PDF	36 Pages

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DS22065C-page 7

25LC512

Read Sequence

The device is selected by pulling CS low. The 8-bit

READ instruction is transmitted to the 25LC512 fol-

lowed by the 16-bit address. After the correct READ

instruction and address are sent, the data stored in the

memory at the selected address is shifted out on the

SO pin. The data stored in the memory at the next

address can be read sequentially by continuing to

provide clock pulses. The internal Address Pointer is

automatically incremented to the next higher address

after each byte of data is shifted out. When the highest

address is reached (FFFFh), the address counter rolls

over to address 0000h allowing the read cycle to be

continued indefinitely. The READ instruction is

terminated by raising the CS pin (Figure 2-1).

FIGURE 2-1:

READ SEQUENCE

SCK

23456789 10 11

21 22 23 24 25 26 27 28 29 30 31

15 14 13 12

210

765

43210

Instruction

16-bit Address

Data Out

High-Impedance

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