FM25V02 データシートの表示（PDF） - Ramtron International Corporation

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FM25V02

256Kb Serial 3V F-RAM Memory

Ramtron International Corporation 

FM25V02 - 256Kb SPI FRAM

S

0123456701234567

456701234567

C

op-code

15-bit Address

Data

D

0 0 0 0 0 0 1 0 X 14 13 12 11 10 9 8

3210 76543210

MSB

Q

LSB MSB

LSB

Figure 9. Memory Write with 2-Byte Address

S

0123456701234567

456701234567

C

op-code

15-bit Address

D

0 0 0 0 0 0 1 1 X 14 13 12 11 10 9 8

32 1 0

MSB

LSB MSB

Dat a

LSB

Q

76543210

Figure 10. Memory Read with 2-Byte Address

S

012345670123

56 7

456701234567

C

op-code

15-bit Address

Dummy byte

D

0 0 0 0 1 0 1 1 X 14 13 12

2 10

XXXX

MSB

LSB

MSB

Dat a

LSB

Q

76543210

Figure 11. Fast Read with 2-Byte Address and Dummy Byte

Rev. 2.0

May 2010

Page 8 of 17

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