AK4184A Datasheet, PDF (9/36 Pages) Asahi Kasei Microsystems – TSC with Keypad Scanner and GPIO Expander

[AK4184A]
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ػ ■ೳ֓ཁ
AK4184A ͸ɺ࣍ͷػೳϒϩοΫͰߏ੒͞Ε͍ͯ·͢ɻ
● 4 ઢࣜ఍߅ບํࣜλονεΫϦʔϯΠϯλʔϑΣʔε
● 6 ྻ x 5 ߦ ΩʔύουΠϯλʔϑΣʔε
● 8 GPIO pin
● LED ௐޫ༻ PWM ޚ੍ճ࿏
● ஞ࣍ൺֱ ܕAD ίϯόʔλ
● ϖϯׂΓࠐΈɺΩʔύουׂΓࠐΈճ࿏
● ൃৼճ࿏
ϗετϓϩηοαͱͷ௨৴͸ɺ4 ઢࣜ SPI™όεܦ༝Ͱߦ͍·͢ɻ
SPI™͸ɺMotorola Inc.ͷొ࿥঎ඪͰ͢ɻ
■ λονεΫϦʔϯ A/D ίϯόʔλ
λονύωϧͷ࣠ʹੜͨ͡ిҐࠩ΍චѹͷిѹଌఆ༻ʹ 12 bit ஞ࣍ൺֱܕA/DίϯόʔλΛ಺ଂ͍ͯ͠·͢ɻ
͜ͷA/Dίϯόʔλ͸ɺిՙ࠶෼഑ํࣜΛ࠾༻͓ͯ͠Γɺ಺෦ͷΩϟύγλΞϨΠ͸ɺαϯϓϧɾϗʔϧυ
ճ࿏ͱͯ͠΋ػೳ͠·͢ɻ12 ϏοτA/Dίϯόʔλͷग़ྗϑΥʔϚοτ͸ Table 1 ͷ༷ʹετϨʔτόΠφϦ
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ೖྗిѹ

ग़ྗίʔυ

(ΔVREF - 1.5LSB) ~ ΔVREF
(ΔVREF - 2.5LSB) ~ (ΔVREF - 1.5LSB)
---------
0.5LSB ~ 1.5LSB
0 ~ 0.5LSB
FFFH
FFEH
---------
001H
000H
ΔVREF: (VREF+) – (VREF-)
Table 1. ग़ྗίʔυ
MS0947-J-00
-9-
2008/04