MB85RC64A Datasheet, PDF (7/32 Pages) Fujitsu Component Limited. – 64 K (8 K × 8) ビットI2C

MB85RC64A
■ ίϚϯυ
ɾByte Write
ελʔτɾίϯσΟγϣϯʹଓ͍ͯσόΠεɾΞυϨεɾϫʔυ (R/W “0” ೖྗ ) Λૹ৴͢Δ͜ͱͰ , εϨʔϒ͔Β ACK Λ
Ԡ౴͠·͢ɻ͜ͷ ACK ޙ, ಉ༷ʹॻࠐΈϝϞϦΞυϨε , ॻࠐΈσʔλΛૹ৴͠ , ʹޙ࠷ετοϓɾίϯσΟγϣϯΛൃߦ
͢Δ͜ͱͰॻࠐΈ͕͢·ྃ͠׬ɻ
S 1 0 1 0 A2 A1 A0 0 A
Address
High 8bits
A
Address
Low 8bits
A
Write
Data 8bits
AP
0 00XXXXX
MSB
X X X X X X XX
LSB
Ϛελ͔ΒͷΞΫηε
εϨʔϒ͔ΒͷΞΫηε
S ελʔτɾίϯσΟγϣϯ
P ετοϓɾίϯσΟγϣϯ
A ^{ACK(SDA ͕ “L” Ϩϕϧ )}
ʢ஫ҙࣄ߲ʣMB85RC64A Ͱ͸ , ΞυϨε͸ 13 ϏοτͰද͞ΕΔͨΊ , MSB ͷ্Ґ 3 Ϗοτʹ͸ “000” Λೖྗ͍ͯͩ͘͠͞ɻ
ɾPage Write
Byte Write ͱಉ༷ͷίϚϯυ ( ετοϓɾίϯσΟγϣϯΛআ͘ ) Λૹ৴ͨ͠ ޙ, ࿈ଓͯ͠σʔλૹ৴͢Δ͜ͱͰ , ࣍ͷ
ϝϞϦΞυϨεҎ߱΋ॻࠐΈ·͢ɻ
࠷ऴϝϞϦΞυϨεʹ౸ୡ͢Δͱ ઌ಄ϝϞϦΞυϨε (0000H) ʹϩʔϧΦʔό͠·͢ɻ͕ͨͬͯ͠ , 8 K όΠτҎ্ૹ
৴ͨ͠৔߹ , ࠷ॳʹॻࠐΈͨ͠ FRAM ϝϞϦΞυϨεͷઌ಄͔Βॱʹ্ॻ͖͞Ε͍͖ͯ·͢ɻ
ͳ͓ , FRAM ͸ॻࠐΈ͕ߴ଎ͳͨΊ , ACK ͷԠ౴͕ͨྃ͠׬௚ʹޙ͸ , ෆൃشੑϝϞϦ΁ͷσʔλॻࠐΈ͕ྃ͠׬ʹط
͍ͯ·͢ɻ
S 1 0 1 0 A2 A1 A0 0 A
Address
High 8bits
A
Address
Low 8bits
A
Write
Data 8bits
A
Write
Data
... A P
Ϛελ͔ΒͷΞΫηε
εϨʔϒ͔ΒͷΞΫηε
S ^{ελʔτɾίϯσΟγϣϯ}
P ετοϓɾίϯσΟγϣϯ
A ACK(SDA ͕ “L” Ϩϕϧ )
ʢ஫ҙࣄ߲ʣετοϓɾίϯσΟγϣϯൃߦ ޙ, όοϑΝ͔ΒϝϞϦ΁ͷ಺෦ॻࠐΈαΠΫϧؒظΛͱΔඞཁ͸͋Γ·ͤΜɻ
DS501-00019-2v0-J
7