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AK4182A Datasheet, PDF (12/18 Pages) Asahi Kasei Microsystems – Touch Screen Controller
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ASAHI KASEI

্ཱ͛ͪݯి ■γʔέϯε
[AK4182A]
ݯి౤ೖ௚ ʹޙPD1ɺPD0 ͳͲͷ಺෦Ϩδελ΍ɺA/D ίϯόʔλͷγʔέϯεϨδελͳͲΛॳظԽ͢ΔͨΊʹɺ8bit
ޚ੍ίϚϯυΛൃߦ͠ɺ಺෦Ϩδελͷ஋Λ֬ఆͯ͠Լ͍͞ɻి্ཱ͛ͪݯγʔέϯε͸ CSN= “H” ·ͨ͸ CSN = “L”
ݯిͰ౤ೖ ޙCSN = “H” ʹ͔ͯ͠Β CSN = “L” ޚ੍ͯ͠ʹίϚϯυΛൃߦޙɺ࠶౓ CSN = “H” ʹͯ͠Լ͍͞ɻ
1 ޚ੍౓ίϚϯυΛൃߦ͢Ε͹ɺͦΕҎ߱ɺલճൃߦ͞Ε੍ͨޚίϚϯυͷঢ়ଶ͕อ࣋͞Ε·͢ɻ
■ εϦʔϓϞʔυ
AK4182A͸ɺλονύωϧͱͷ઀ଓΛOPENʹͨ͠ΓɺϖϯׂΓࠐΈΛແޮʹ͢Δࣄ͕ՄೳͳεϦʔϓϞʔυΛαϙʔ
τ͍ͯ͠·͢ɻԼޚ੍هίϚϯυΛൃߦ͢ΔʹΑΓAK4182A͸εϦʔϓϞʔυʹೖΓ·͢ɻMODE bitͰεϦʔϓϞʔυ
બ୒Λߦ͍·͢ɻ·ͨɺPD1, PD0Ͱઃఆ͞Ε֤ͨύϫʔμ΢ϯঢ়ଶͰεϦʔϓϞʔυʹೖΓ·͢ɻPD1 = 0ઃఆͰεϦʔ
ϓϞʔυʹೖΔͱɺফඅిྲྀΛ࠷খʹ͢Δ͜ͱ͕ग़དྷ·͢ɻPENIRQN pinͷग़ྗɺλονύωϧͱͷ઀ଓ͸ҎԼͷද
(Table 3)ͷ௨ΓͰ͢ɻ
Ұ౓εϦʔϓϞʔυʹೖΔͱ࠶౓ίϚϯυΛड͚औΔ·Ͱ͸ɺεϦʔϓঢ়ଶͷ··Ͱ͢ɻ
ൃߦίϚϯυ MODE bit
CSN = “L”ͷ࣌
CSN = “H”ͷ࣌
PENIRQN
λονύωϧ
PENIRQN
λονύωϧ
111010XX
1
௨ৗಈ࡞
௨ৗಈ࡞
Hi-z
Open
111000XX
0
௨ৗಈ࡞
௨ৗಈ࡞
H ग़ྗ
Open
Table 3 εϦʔϓίϚϯυઃఆ

εϦʔϓϞʔυʹೖΔλΠϛϯά͸ 8DCLKˢͰ͢ɻୠ͠ɺಈ࡞͸ CSN = “H”Ͱ༗ޮʹͳΓ·͢ɻ
εϦʔϓϞʔυ͔Β௨ৗঢ়ଶʹҠߦ͢ΔͨΊʹ͸ɺ௨ৗͷίϚϯυΛൃߦͯ͠Լ͍͞ɻ௨ৗϞʔυ΁ͷҠߦλΠϛϯά
͸ɺ8DCLKˢͰ͢ɻ࠶౓ɺεϦʔϓίϚϯυΛൃߦͨ͠৔߹͸ɺεϦʔϓϞʔυΛܧଓ͠·͢ɻ·ͨిݯ౤ೖޙͷॳظ
ঢ়ଶ͸ɺ௨ৗঢ়ଶϞʔυͰ͢ɻ
■ ύϫʔμ΢ϯ੍ޚ

PD1, PD0 ͷ 2 ϏοτͰɺύϫʔμ΢ϯ੍ޚΛߦ͍·͢ɻPD1 bit ʹΑΓɺ಺ଂج४ిѹݯͷύϫʔμ΢ϯ੍ޚΛߦ͍·͢ɻ
·ͨɺPD0 bit ͸ɺA/D ίϯόʔλ͓ΑͼλονεΫϦʔϯυϥΠόεΠονͷύϫʔμ΢ϯ੍ޚΛߦ͍·͢ɻ
಺ଂج४ిѹݯͷύϫʔμ΢ϯ੍ޚͷ੾Γସ͑͸ɺCSN = “L” ͷঢ়ଶͰɺ7DCLK↑Ͱ൓ө͞Ε·͢ɻ
A/D ίϯόʔλͷύϫʔμ΢ϯ੍ޚͷ੾Γସ͑͸ɺCSN = “L” ͷঢ়ଶͰɺ8DCLK↑Ͱ൓ө͞Ε·͢ɻ
PD0 = “1” ʹઃఆ͢Δͱɺ࣍ͷ CSN = “L” ޙɺ5DCLK↑·ͰલճͷυϥΠόεΠονঢ়ଶΛอ࣋͠·͢ʢCSN = “H” Ͱ͸ɺ
YN Λআ͖ XP, YP, XN ͷ֤υϥΠόεΠον͸ OFF ʹͳΓ·͢ɻʣ
PD1 PD0 PENIRQN
ػೳ
0
0 Enabled Φʔτύϫʔμ΢ϯϞʔυɻ
಺ଂA/Dίϯόʔλ͸ɺม׵։࢝࣌ʹࣗಈతʹύϫʔΞοϓ͠ɺม͕׵ऴྃ͢Δͱࣗಈత
ʹύϫʔμ΢ϯ͠·͢ɻ·ͨɺCSN = “H” Ͱ΋ɺύϫʔμ΢ϯঢ়ଶͰ͢ɻύϫʔμ΢ϯঢ়
ଶͰ͸ɺλονεΫϦʔϯυϥΠόεΠον͸OPENʹͳΓ·͢ɻʢͨͩ͠ɺYN pin͸
GNDʣɻ͜ͷϞʔυͰ͸ɺτϥοΩϯάத͓ΑͼA/Dม׵தҎ֎͸ɺϖϯׂΓࠐΈػೳ͕
༗ޮͰ͢ʢৄࡉ͸ʰ„ ϖϯׂΓࠐΈʱࢀরʣɻ಺ଂج४ిѹݯ͸ɺA/Dม׵த΋ؚΊৗʹ
ύϫʔμ΢ϯঢ়ଶͰ͢ɻ
0
1
Enabled ADC ON Ϟʔυ
CSN = “L”Ͱ͸ ADC ͸ৗʹ ON ঢ়ଶͰ͢ɻ಺ଂج४ిѹݯ͸ৗʹύϫʔμ΢ϯঢ়ଶͰ
͢ɻೖྗνϟωϧͱͯ͠ X ࣠͋Δ͍͸ Y ͕࣠બ୒͞Ε͍ͯΔ৔߹ɺCSN = “L”ͷؒظ͸ৗ
ʹλονεΫϦʔϯυϥΠό͸ ON Ͱ͢ɻ͜ͷͨΊɺA/D ίϯόʔλͷητϦϯά࣌ؒΛ
௕͘औΔ৔߹ʹ༗ޮͰ͢ɻ CSN = “H” Ͱ͸ɺA/D ίϯόʔλ͸ύϫʔμ΢ϯঢ়ଶͰ͢ɻ
1
0
Enabled VREF ON Ϟʔυ
CSN ͷঢ়ଶʹؔ܎ͳ͘ɺج४ిѹݯ͸ৗʹ ON ঢ়ଶͰ͢ɻAD ίϯόʔλ͸Φʔτύϫʔ
μ΢ϯϞʔυͰಈ࡞͠·͢ɻ5DCLK↓ʙ20DCLK↓Ҏ֎ͷ۠ؒͰ͸ɺCSN ͷঢ়ଶʹؔ܎ͳ
͘ PENIRQN ͸༗ޮͰ͢ɻ
1
1 Disabled ج४ిѹݯɺADC ʹڞON Ϟʔυ
CSN = “H” Ͱ͸ɺPEN ׂΓࠐΈ͸ແޮͰɺৗʹ PENIRQN ͸ “H” Ͱ͢ɻCSN = “L” ͷঢ়ଶ
Ͱ͸ɺυϥΠόεΠονͷ ON/OFF ΛؚΉલճઃఆ͞Εͨೖྗνϟωϧʹઃఆ͞Ε·
͢ɻ
Table 4 ύϫʔμ΢ϯ੍ޚ
MS0482-J-01
 
 2007/12
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