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AK4182A Datasheet, PDF (7/18 Pages) Asahi Kasei Microsystems – Touch Screen Controller | |||
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ASAHI KASEI
[AK4182A]
â λονεΫϦÊϯ A/D ίϯÏÊλ
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12 ÏοÏA/DίϯÏÊλͷà¥à¾ÏÎ¥ÊÏοÏ͸Table 1Í·ÎÍʹεÏϨÊÏÏÎ ÏϦͰ͢ɻ
à³à¾à°¿Ñ¹
à¥à¾Î¯ÊÏ
(ÎVREF-1.5LSB)~ ÎVREF
(ÎVREF-2.5LSB) ~ (ÎVREF-1.5LSB)
---------
0.5LSB ~ 1.5LSB
0 ~ 0.5LSB
FFFH
FFEH
---------
001H
000H
ÎVREF É¿ (VREF+) â (VREF-)
Table 1 à¥à¾Î¯ÊÏ
A/D ม׵ͷÏϧεÎÊϧÎVREF ͸ɺà³à¾ÏÊÏ
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â ÎÏϩάà³à¾
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YPÊ£ÍબàÍÎÍÍɺίÏϯÏ
தͷ SER/ DFR bit Í â0â Í·à§ß¹Ê¢ÏÎÏÎϨϯγÏϧà¹à£Ê£ÉºA/D ίϯÏÊλͷÏϧ
εÎÊϧʢÎVREFʣ͸ɺà¬à°à¬°à§
࣠ʹҹÕÍÎÎà°¿Òà ©Ê¢X ࣠à¬à°Í·à§ß¹Éº(XP) â (XN)ʣʹͳÎÎ͢ɻà¬à°à¬°à§
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εÎÊϧʢÎVREFʣ͸ɺ಺à¬Ø¬à¥ªà°¿Ñ¹ÍÎÍ͸Ö෦ج४ిѹͱɺGND ͱͷిÒà ©ÍÏϧεÎÊϧʹͳÎÎ͢ɻA/D ίϯ
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CSN = âLâÍ° START bit Í·Ýà¥Þɺ5DCLKË£ÍÎ 8CLKË£ÎÍ°Í·Û Ø͸ɺÏϥοΩϯάà£ØʹͳÎÎ͢ɻ
಺෦ΩÏÏγλʹిÕÎνÏÊδ͢ÎͨÎÍ·à£ØÊ¢ÏϥοΩϯάà£Øʣ͸ɺà¦Í³ÍͱÎɺ1.428μs(2.1MHz Í° 3tDCLK)à¶
à½Í°Í¢É»Îͨ ADC Í·à ·àεϧÊÏοÏ͸ɺ125kHz Ͱ͢ɻ
â λονεΫϦÊϯͷÒà®Ýà¥
λονεΫϦÊϯͷÒà®Ýà¥Í¸ÉºÎµÎ«Ï¦ÊϯͷҰà¹Í·à£ ʢྫÍ͹ɺXP, XN ØʣʹిѹÎÒ¹ÕÍ Éºà¬à¹Í·à£ ʢྫÍ͹ɺ
YPʣͰÝà¥ÍÎÎà°¿ÒÎà¬à°Í¢ÎÍͱͰà²ÎÎÎ͢ɻÒà®Ýà¥Í¸ÉºX ࣠ɾY à£ Í·à ²à¶ªÎÍ¢à¢ÜÎà¶à½ÍÍÎͨÎÉºà ·à¯¿
2 ճͷ A/D มÍ×µà¶à½Í°Í¢É»
MS0482-J-01
2007/12
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