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MB85RS2MT Datasheet, PDF (9/28 Pages) Fujitsu Component Limited. – 2M (256 K × 8) ビットSPI | |||
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MB85RS2MT
ã»FSTRD
FSTRD ã³ãã³ã㯠FRAM ã¡ã¢ãªã»ã«ã¢ã¬ã¤ã®ãã¼ã¿ãèªã¿åºãã¾ããSI ã« FSTRD ã®ãªãã³ã¼ãã¨ä»»æã® 24 ãããã®
ã¢ãã¬ã¹ã«ç¶ãã¦ããã¼8 ããããå
¥åãã¾ããã¢ãã¬ã¹ã®ä¸ä½ 6 ãããã¯ç¡å¹ã§ãããã®å¾ , SCK ã« 8 ãµã¤ã¯ã«ã®ã¯ãã
ã¯ãå
¥åãã¾ããSO 㯠SCK ã®ç«ä¸ãã¨ãã¸ã«åæãã¦åºåããã¾ãããã®èªåºãä¸ , SI ã®å¤ã¯ç¡å¹ã§ããCS ãç«ã¡ä¸ãã
㨠FSTRD ã³ãã³ãã¯çµäºãã¾ãã , CS ç«ä¸ãåã«å¼ãç¶ã SCK ã« 8 ãµã¤ã¯ã«ãã¤ã¯ããã¯ãéãç¶ãããã¨ã§ , ã¢ãã¬
ã¹ãèªåã¤ã³ã¯ãªã¡ã³ããã¦èªåºããç¶ãããã¨ãå¯è½ã§ããæä¸ä½ã¢ãã¬ã¹ã«éããã¨ãã¼ã«ãªã¼ããã¦0çªå°ã«æ»ã,
èªåºããµã¤ã¯ã«ã¯ééãªãç¶ãããã¾ããFSTRD ã³ãã³ã㯠, 25 MHz (1.8 V ï½ 2.7 V) ããã³ 40 MHz (2.7 V ï½ 3.6 V) ã¾ã§
ã®åä½ã«å¯¾å¿ãã¦ãã¾ãã
CS
SCK
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11 12 13 1415 29 30 31 32 33 38 39 40 41 42 43 44 45 46 47
ãªãã³ã¼ã
24 ãããã¢ãã¬ã¹
8 ãããããã¼
0 0 0 0 1 0 1 1 X X X X X X 17 16
MSB
High-Z
2 1 0 XX
LSB
X X Invalid
MSB Data Out LSB
76543210
Invalid
ã»RDID
RDID ã³ãã³ã㯠, åºå®ã®ããã¤ã¹ ID ãèªã¿åºãã¾ããSI 端åã« RDID ã®ãªãã³ã¼ããå
¥åå¾ , SCK ã« 32 ãµã¤ã¯ã«ã®ã¯
ããã¯ãå
¥åãã¾ãããã®ã¨ã, SIã®å¤ã¯ç¡å¹ã§ããSOã¯SCKã®ç«ä¸ãã¨ãã¸ã«åæãã¦åºåããã¾ããåºåã¯Manufacturer
ID (8bit) / Continuation code (8bit) / Product ID (1st Byte) / Product ID (2nd Byte) ã®é ã«åºåããã¾ããRDID ã³ãã³ãã§ã¯ , 32
ãããã®ããã¤ã¹ ID åºåå¾ , SO ã¯æçµãããã®åºåç¶æ
ã CS ã®ç«ä¸ãã¾ã§ä¿æãã¾ããRDID ã³ãã³ã㯠, 25 MHz ã¾
ã§ã®åä½ã«å¯¾å¿ãã¦ãã¾ãã
CS
SCK
0 1 2 3 4 5 6 7 8 9 10 11
31 32 33 34 35 36 37 38 39
SI
10011111
Invalid
High-Z
SO
Data Out
31 30 29 28
MSB
Data Out
876543210
LSB
Manufacturer ID
Continuation code
bit
7
6
5
4
3
2
1
0
0
0
0
0
1
0
0
1
1
1
1
1
1
Proprietary use
Density
Product ID (1st Byte) 0
0
1
0
1
0
0
Proprietary use
Product ID (2nd Byte) 0
0
0
0
0
0
1
0 Hex
0 04H Fujitsu
1
7FH
Hex
0 28H Density:01000B ï¼ 2 Mbit
Hex
1
03H
DS501-00023-1v0-J
9
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