MB85RS16 Datasheet, PDF (10/32 Pages) Fujitsu Component Limited. – 16 K (2 K×8) ビットSPI

MB85RS16
■ ϒϩοΫϓϩςΫτ
εςʔλεϨδελͷ BP1, BP0 ͷ஋ʹΑΓ WRITE ίϚϯυͰͷॻࠐΈϓϩςΫτϒϩοΫΛઃఆͰ͖·͢ɻ
BP1
BP0
ϓϩςΫτϒϩοΫ
0
0
ͳ͠
0
1
600H ʙ 7FFH ( ্Ґ 1/4)
1
0
400H ʙ 7FFH ( ্Ґ 1/2)
1
1
000H ʙ 7FFH ( ͢΂ͯ )
■ ॻࠐΈϓϩςΫτ
WEL, WPEN, WP ͷ஋ʹΑΓ WRITE ίϚϯυ͓Αͼ WRSR ίϚϯυͷॻࠐΈಈ࡞͕ϓϩςΫτ͞Ε·͢ɻ
WEL WPEN
WP _{ϓϩςΫτϒϩοΫ ΞϯϓϩςΫτϒϩοΫ εςʔλεϨδελ}
0
X
X
ϓϩςΫτ
ϓϩςΫτ
ϓϩςΫτ
1
0
X
ϓϩςΫτ
ΞϯϓϩςΫτ
ΞϯϓϩςΫτ
1
1
0
ϓϩςΫτ
ΞϯϓϩςΫτ
ϓϩςΫτ
1
1
1
ϓϩςΫτ
ΞϯϓϩςΫτ
ΞϯϓϩςΫτ
■ ϗʔϧυಈ࡞
CSΛ“L”Ϩϕϧʹอͬͨ··HOLDΛ“L”Ϩϕϧʹ͢Δͱ, ίϚϯυ͕தࢭ͞ΕΔ͜ͱͳ͘ϗʔϧυঢ়ଶʹอͨΕ·͢ɻ
ϗʔϧυঢ়ଶͷ࢝·ΓͱऴΘΓͷλΠϛϯά͸ , Լਤʹࣔ͢Α͏ʹ HOLD ୺ࢠೖྗ͕ϗʔϧυঢ়ଶʹભҠͨ͠ͱ͖ , SCK
͕ “H” Ϩϕϧ͔ “L” Ϩϕϧ͔ͰҟͳΓ·͢ɻSCK ͕ “L” Ϩϕϧͷ࣌ʹ HOLD ୺ࢠΛ “L” Ϩϕϧʹͨ͠৔߹͸ , SCK ͕ “L”
Ϩϕϧͷ࣌ʹ HOLD ୺ࢠΛ “H” Ϩϕϧʹ໭͍ͯͩ͘͠͞ɻಉ༷ʹ , SCK ͕ “H” Ϩϕϧͷ࣌ʹ HOLD ୺ࢠΛ “L” Ϩϕϧʹ
ͨ͠৔߹͸ , SCK ͕ “H” Ϩϕϧͷ࣌ʹ HOLD ୺ࢠΛ “H” Ϩϕϧʹ໭͍ͯͩ͘͠͞ɻϗʔϧυঢ়ଶͰ͸೚ҙͷίϚϯυͷಈ
࡞͸தஅ͞Ε , SCK, SI ೖྗ͸ don’t care ͱͳΓ·͢ɻ·ͨಡग़͠ίϚϯυ (RDSR, READ) ʹ͓͍ͯ SO ͕ High-Z ʹͳΓ·
͢ɻϗʔϧυঢ়ଶʹ͓͍ͯ CS Λ্ཱͪ͛ΔͱɼίϚϯυॲཧΛऴྃ͠·͢ɻͨͩ͠ɼίϚϯυೝࣝલʹऴྃͨ͠৔߹ɼWEL
͸ϗʔϧυঢ়ଶʹભҠ͢Δલͷ஋Λอ࣋͠·͢ɻ
CS
SCK
HOLD
ϗʔϧυঢ়ଶ
ϗʔϧυঢ়ଶ
10
DS501-00014-6v0-J