AK4182A Datasheet, PDF (13/18 Pages) Asahi Kasei Microsystems – Touch Screen Controller

ASAHI KASEI


■ λονεΫϦʔϯίϯτϩʔϥ੍ޚγʔέϯε
λονεΫϦʔϯͷ੍ޚ͸ɺCSN, DCLK, DIN, DOUT ͷ 4 ઢࣜΠϯλϑΣʔεͰߦͳ͍·͢ɻ
ৄࡉͳλΠϛϯάنఆʹؔͯ͠͸ɺʰεΠονϯάಛੑʱΛࢀরͯ͠Լ͍͞ɻ
[AK4182A]
CSN
DCLK
DIN
Hi-Z
BUSY
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
S A2
A1
A0 MO SER/ PD1 PD0
DFR
S A2
A1
A0 MO SER/ PD1 PD0
DFR
Hi-Z
DOUT
11 10 9 8 7 6 5 4 3 2 1 0
11 10
Touch Screen Driver SW
(SER/ DFR =”1”, PD0 =”0”)
Touch Screen Driver SW
(SER/ DFR =”0”, PD0 =”0”)
Figure 7 γϦΞϧΠϯλϑΣʔε
CSN ͷ↓ ͰɺBUSY ͓Αͼ DOUT ͸ɺHi-Z ঢ়ଶ͔Βɺ“L” ʹͳΓ·͢ɻAK4182A ͸ɺDCLK ͷ↑Ͱɺ̔ϏοτͷίϚϯ
υΛ DIN ΑΓϥον͠·͢ɻCSN ͷ↓ޙɺ࠷ॳʹ “H” Λϥονͨ࣌͠఺ͰίϚϯυͷ։࢝Λೝࣝ͢ΔͨΊɺίϚϯυͷ
MSBʢS Ϗοτʣ͸ඞͣ “H” Ͱͳ͚Ε͹ͳΓ·ͤΜɻ
5DCLK↓͔Βɺ8DCLK↓ ·Ͱ͸ɺADC ͷτϥοΩϯά࣌ؒʹͳΓ·͢ɻSER/ DFR = “1”ɺύϫʔμ΢ϯ੍ޚϏοτ
PD0 = “0” Ͱɺ͔ͭλονεΫϦʔϯͷҐஔݕग़͋Δ͍͸චѹݕग़ͷ৔߹ɺ͜ͷ۠ؒλονεΫϦʔϯυϥΠό͕ ON
ʹͳΓ·͢ɻSER/ DFR = “0” ͷ৔߹͸ɺ5DCLK↓͔Βɺ20 DCLK↓·ͰλονεΫϦʔϯυϥΠό͸ ON Ͱ͢ɻύϫʔ
μ΢ϯ੍ޚϏοτ PD0 = ”1”ͰλονεΫϦʔϯͷҐஔݕग़͋Δ͍͸චѹݕग़ͷ৔߹ɺ5DCLK↓Ҏ߱ɺCSN = “H” ʹͳΔ
·ͰλονεΫϦʔϯυϥΠό͸ৗʹ ON Ͱ͢ɻ
8DCLK↓͔Βɺ9DCLK↓·ͰɺBUSY ͸ “H” ʹͳΓ·͢ɻͦΕҎ֎ͷ۠ؒͰ͸ “L” Ͱ͢ɻ
9DCLK↓͔ΒɺMSB ϑΝʔετͰ DOUT ΑΓ A/D σʔλΛग़ྗ͠·͢ɻ
8bit ίϚϯυൃߦऴྃޙɺ࠷௿ 7DCLK ͷؒ͸ DIN = “L” ͱͯ͠Լ͍͞ɻ
ഁઢͷΑ͏ʹ A/D σʔλͷग़ྗதʹίϚϯυσʔλΛૹग़͢Δ͜ͱͰɺ࠷଎ 15DCLK αΠΫϧͰ A/D ม׵Λߦ͏͜ͱ͕
ՄೳͰ͢ɻ
MS0482-J-01




2007/12