MB85RS256B Datasheet, PDF (9/32 Pages) Fujitsu Component Limited. – 256 K (32 K×8) ビットSPI

MB85RS256B
ɾFSTRD
FSTRD ίϚϯυ͸ FRAM ϝϞϦηϧΞϨΠͷσʔλΛಡΈग़͠·͢ɻSI ʹ FSTRD ͷΦϖίʔυͱ೚ҙͷ 16 Ϗοτͷ
ΞυϨεʹଓ͍ͯμϛʔ8 ϏοτΛೖྗ͠·͢ɻΞυϨεͷ࠷্ҐϏοτ͸ແޮͰ͢ɻͦͷ ޙ, SCK ʹ 8 αΠΫϧͷΫϩο
ΫΛೖྗ͠·͢ɻSO ͸ SCK ͷཱԼΓΤοδʹಉͯ͠ظग़ྗ͞Ε·͢ɻ͜ͷಡग़͠த , SI ͷ஋͸ແޮͰ͢ɻCS Λ্ཱͪ͛Δ
ͱ FSTRD ίϚϯυ͸ऴྃ͠·͢ɻCS ্ཱ͛લʹ 8 αΠΫϧͣͭͷΫϩοΫΛ SCK ʹૹΓଓ͚Δ͜ͱͰ , ΞυϨεΛࣗಈ
ΠϯΫϦϝϯτͯ͠ಡग़͠Λଓ͚Δ͜ͱ͕ՄೳͰ͢ɻ࠷্ҐΞυϨεʹୡ͢ΔͱϩʔϧΦʔόͯ͠ 0 ൪஍ʹ໭Γ ,
ಡग़͠αΠΫϧ͸ࡍ͘ͳݶଓ͚ΒΕ·͢ɻFSTRD ίϚϯυ͸ , 33 MHz ·Ͱͷಈ࡞ʹରԠ͍ͯ͠·͢ɻ
CS
SCK
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11
21 22 23 24 25
30 31 32 33 34 35 36 37 38 39
Φϖίʔυ
16 ϏοτΞυϨε 8 Ϗοτμϛʔ
0 0 0 0 1 0 1 1 X 14 13 12
2 1 0XX
XX
Invalid
MSB
LSB
High-Z
MSB
Data Out
LSB
76543210
Invalid
ɾRDID
RDID ίϚϯυ͸ , ݻఆͷσόΠε ID ΛಡΈग़͠·͢ɻSI ୺ࢠʹ RDID ͷΦϖίʔυΛೖྗ ޙ, SCK ʹ 32 αΠΫϧͷΫ
ϩοΫΛೖྗ͠·͢ɻ͜ͷͱ͖, SIͷ஋͸ແޮͰ͢ɻSO͸SCKͷཱԼΓΤοδʹಉͯ͠ظग़ྗ͞Ε·͢ɻग़ྗ͸Manufacturer
ID (8bit) / Continuation code (8bit) / Product ID (1st Byte) / Product ID (2nd Byte) ͷॱʹग़ྗ͞Ε·͢ɻRDID ίϚϯυͰ͸ ,32
ϏοτͷσόΠε ID ग़ྗޙɼSO ͸࠷ऴϏοτͷग़ྗঢ়ଶΛ CS ͷ্ཱ͛·Ͱอ࣋͠·͢ɻRDID ίϚϯυ͸ , 33 MHz ·Ͱ
ͷಈ࡞ʹରԠ͍ͯ͠·͢ɻ
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
SO ^High-Z
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
0
0
0
1
0
Proprietary use
Product ID (2nd Byte) 0
0
0
0
1
0
0
0 Hex
0 04H Fujitsu
1
7FH
Hex
1 05H _{Density:00101B ʹ 256Kbit}
Hex
1
09H
DS501-00021-3v0-J
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