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MB85RS256B Datasheet, PDF (7/32 Pages) Fujitsu Component Limited. – 256 K (32 K×8) ビットSPI
MB85RS256B
ɾRDSR
RDSR ίϚϯυ͸εςʔλεϨδελͷσʔλΛಡΈग़͠·͢ɻSI ʹ RDSR ͷΦϖίʔυΛೖྗ ޙ, SCK ʹ 8 αΠΫϧ
ͷΫϩοΫΛೖྗ͠·͢ɻ͜ͷͱ͖ , SI ͷ஋͸ແޮͰ͢ɻSO ͸ SCK ͷཱԼΓΤοδʹಉͯ͠ظग़ྗ͞Ε·͢ɻRDSR ίϚ
ϯυͰ͸ CS ͷ্ཱ͛લʹ SCK ΛૹΓଓ͚Δ͜ͱͰεςʔλεϨδελΛ܁Γฦ͠ಡΈग़͢͜ͱ΋ՄೳͰ͢ɻRDSR ίϚ
ϯυ͸ , 33 MHz ·Ͱͷಈ࡞ʹରԠ͍ͯ͠·͢ɻ
CS
SCK
SI
SO
0 1 2 3 4 5 6 70 1 2 3 4 5 6 7
00000101
High-Z
MSB
Invalid
Data Out
Invalid
LSB
ɾWRSR
WRSR ίϚϯυ͸εςʔλεϨδελͷෆൃشੑϝϞϦϏοτʹσʔλΛॻ͖ࠐΈ·͢ɻSI ୺ࢠʹ WRSR ͷΦϖίʔυ
ͷ ޙ, 8 ϏοτͷॻࠐΈσʔλΛೖྗ͠·͢ɻWEL ( ϥΠτΠωʔϒϧϥον ) ͸ WRSR ίϚϯυͰ͸ॻࠐΈͰ͖·ͤΜɻ
Ϗοτ 1 ʹରԠ͢Δ SI ͷ஋͸ແࢹ͞Ε·͢ɻεςʔλεϨδελͷϏοτ 0 ͸ “0” ݻఆͰ͋ΓॻࠐΈͰ͖·ͤΜɻϏοτ
0 ʹରԠ͢Δ SI ͷ஋͸ແࢹ͞Ε·͢ɻWP ୺ࢠ͸ , WRSR ίϚϯυͷൃߦલ·Ͱʹඞͣ஋Λ֬ఆ͠ , ίϚϯυγʔέϯεऴ
ྃ·Ͱมߋ͠ͳ͍Ͱ͍ͩ͘͞ɻWRSR ίϚϯυ͸ , 33 MHz ·Ͱͷಈ࡞ʹରԠ͍ͯ͠·͢ɻ
CS
SCK
SI
SO
012345670 1 2 3 4 5 6 7
Instruction
Data In
0000000176543210
MSB
LSB
High-Z
DS501-00021-3v0-J
7