AK4184A Datasheet, PDF (4/36 Pages) Asahi Kasei Microsystems – TSC with Keypad Scanner and GPIO Expander

[AK4184A]
No. Pin Name
A1 NC
B1 KEYIRQN
C2 BUSY
C1 DOUT
D2 DIN
D1 SCLK
E2 CSN
E1 RESETN
F2 PENIRQN
G1 NC
F1 VSS1
G2 YN
F3 XN
G3 YP
F4 XP
G4 AVDD
ϐϯʗػೳ
I/O
Function
- No Connection
No internal bonding. This pin should be open or connected to the ground.
O Keypad Interrupt (Active Low)
CSN pin = “H” ͰΩʔׂΓࠐΈ Enable ঢ়ଶͰ͸ɺΩʔύουԡ͠Լ͛Ͱ“L”ʹͳ
Γ·͢ɻσόϯεεΩϟϯऴྃͰ“H”ʹͳΓ·͢ɻΩʔׂΓࠐΈ Disable ঢ়ଶͰ
͸ɺΩʔύουͷঢ়ଶʹؔ܎ͳ͘ɺৗʹ “H” Ͱ͢ɻ
O BUSY output
ΩʔύουΩʔݕग़࣌ɿΩʔύουεΩϟϯ࣌͸ “H”Λग़ྗ͠·͢ɻ
λονεΫϦʔϯݕग़࣌ɿαϯϓϦϯάऴ͔ྃΒ MSB ͷσʔλΛग़ྗ͢Δ·
Ͱͷؒ͸ “H”Λग़ྗ͠·͢ɻ
O Serial Data Output
SCLK pin ↓ͰσʔλΛग़ྗ͠·͢ɻCSN pin = “L” Ͱ͸σʔλΛग़ྗ͍ͯ͠ͳ͍
࣌͸ “L” Λग़ྗ͠·͢ɻCSN pin = “H” Ͱ͸ Hi-Z ঢ়ଶͰ͢ɻ
I Serial Data Input
SCLK pin ↑ͰσʔλΛϥον͠·͢ɻ
σʔλೖྗ࣌Ҏ֎͸ “L” Λೖྗͯ͠Լ͍͞ɻ
I External Clock Input
I Chip Select Input (Active Low)
CSN pin = “L” ͰɺϨδελ΁ͷॻ͖ࠐΈ͕ՄೳͰ͢ɻ
I Device Reset (Active Low)
O Pen Interrupt Output (Active Low)
CSN pin = “H” ͰϖϯׂΓࠐΈ Enable ঢ়ଶͰ͸ɺλονύωϧ͕ԡ͞Ε͍ͯΔ
ؒظ“L” ͰɺͦΕҎ֎͸ “H” Ͱ͢ɻCSN pin = “H” ͰϖϯׂΓࠐΈ Disable ঢ়ଶ
Ͱ͸ɺλονύωϧͷ઀৮ʗඇ઀৮ʹؔ܎ͳ͘ৗʹ “H” Ͱ͢ɻCSN pin = “L” Ͱ
͸ɺύϫʔμ΢ϯͷϞʔυʹΑΓঢ়ଶ͕มԽ͠·͢ɻৄࡉ͸ɺ„ ύϫʔμ΢ϯ
ޚ੍͓Αͼ „ ϖϯׂΓࠐΈͷ߲ΛࢀরԼ͍͞ɻ
- No Connection
No internal bonding. This pin should be open or connected to the ground.
- Analog Ground
I/O Touch Screen Y- plate Voltage supply
„Y ࣠ํ޲ͷҐஔଌఆ࣌: λονύωϧͷ Y-࣠ଆʹిѹ͢·͠څڙ
„X ࣠ํ޲ͷҐஔଌఆ࣌: OPEN Ͱ͢ɻ
„චѹݕग़࣌: Z2 ଌఆͰ͸ɺADC ΁ͷඃଌఆిҐೖྗϐϯͱͯ͠࢖༻͠·͢ɻ
„ϖϯׂΓࠐΈݕग़࣌: GND Ͱ͢ɻ
I/O Touch Screen X- plate Voltage supply
„X ࣠ํ޲ͷҐஔଌఆ࣌: λονύωϧͷ X-࣠ଆʹిѹ͢·͠څڙ
„Y ࣠ํ޲ͷҐஔଌఆ࣌: OPEN Ͱ͢ɻ
„චѹݕग़࣌: λονύωϧͷ X-࣠ଆʹిѹ͢·͠څڙ
„ϖϯׂΓࠐΈݕग़࣌: OPEN Ͱ͢ɻ
I/O Touch Screen Y+ plate Voltage supply
„Y ࣠ํ޲ͷҐஔଌఆ࣌: λονύωϧͷ Y+࣠ଆʹిѹ͢·͠څڙ
„X ࣠ํ޲ͷҐஔଌఆ࣌: ADC ΁ͷඃଌఆిҐೖྗϐϯͱͯ͠࢖༻͠·͢ɻ
„චѹݕग़࣌: λονύωϧͷ Y+࣠ଆʹిѹ͢·͠څڙ
„ϖϯׂΓࠐΈݕग़࣌: OPEN Ͱ͢ɻ
I/O Touch Screen X+ plate Voltage supply
„X ࣠ํ޲ͷҐஔଌఆ࣌: λονύωϧͷ X+࣠ଆʹిѹ͢·͠څڙ
„Y ࣠ํ޲ͷҐஔଌఆ࣌: ADC ΁ͷඃଌఆిҐೖྗϐϯͱͯ͠࢖༻͠·͢ɻ
„චѹݕग़࣌: Z1 ଌఆͰ͸ɺADC ΁ͷඃଌఆిҐೖྗϐϯͱͯ͠࢖༻͠·͢ɻ
„ϖϯׂΓࠐΈݕग़࣌: ಺෦఍߅ 50kΩͰϓϧΞοϓ͍ͯ͠·͢ɻ
- _{Analog Power Supply: 2.5V ~ 3.6V}
MS0947-J-00
-4-
2008/04