AK4184A Datasheet, PDF (27/36 Pages) Asahi Kasei Microsystems – TSC with Keypad Scanner and GPIO Expander

[AK4184A]
■ GPIO Pin Pull-up Register (PAGE 1)
GPPU͸ɺग़ྗλΠϓ(CMOSɺOpen-drain)Λબ୒͢ΔϨδελͰ͢ɻϐϯઃఆ͕ग़ྗઃఆ(Table 28: IO bit = “1”)
ͷ৔߹ͷΈ༗ޮͰ͢ɻΦʔϓϯυϨΠϯλΠϓΛબ୒ͨ͠৔߹ɺϓϧΞοϓ఍߅ͷ઀ଓઌ͸ɺ(IOVDD+0.3)V
ҎԼʹͯ͠Լ͍͞ɻ
Addr
12H
Name D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
GPPU PU7 PU6 PU5 PU4 PU3 PU2 PU1 PU0 0 0 0 0 0 0 0 0
Table 29. GPIO Pin Pull-up Register Format
Bits Name
Description
15:8 PU GPIO Pullup register select
0: GPIO CMOS outputs (default)
1: GPIO Open drain outputs
7:0
Reserved
Table 30. GPIO Pin Pull-up Register
■ GPIO Pin State Register (PAGE 1)
GPSR ͸ɺϐϯঢ়ଶΛઃఆ͠·͢ɻϐϯઃఆ͕ೖྗઃఆ(IO bit = “0”)ͷ৔߹ͷΈ༗ޮͰ͢ɻ
Addr Name D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
13H GPSR PS7 PS6 PS5 PS4 PS3 PS2 PS1 PS0 0 0 0 0 0 0 0 0
Table 31. GPIO Pin Sate Register Format
Bits Name
Description
15:8
PS GPIO Pin state select
0: GPIO Pull-down (Rgp=1MΩ typ.) state (default)
1: GPIO pin Hi-Z state
7:0
Reserved
Table 32. GPIO Pin State Register
■ GPIO Pin Level Register (PAGE 0)
ϐϯೖྗϨϕϧΛಡΈग़͢ϨδελͰ͢ɻϐϯઃఆ(IO bit)͕ɺೖྗɺग़ྗͲͪΒͷ৔߹Ͱ΋༗ޮͰ͢ɻ͜ͷ
Ϩδελ͸ಡΈग़͠ઐ༻Ͱ͢ɻ্Ґ 8 Ϗοτͷ Reserved Ϗοτ͸ɺ “0”Λฦ͠·͢ɻ
Addr Name D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
10H GPLR 0 0 0 0 0 0 0 0 GPD7 GPD6 GPD5 GPD4 GPD3 GPD2 GPD1 GPD0
Table 33. GPIO Pin Level Register Format
Bits Name
Description
15:8
0
Reserved
7:0 GPD GPIO Pin Level bits for GPIO pins
0: Pin state is low
1: Pin state is high
Table 34. GPIO Pin Level Register
MS0947-J-00
-27-
2008/04