AK4184A Datasheet, PDF (7/36 Pages) Asahi Kasei Microsystems – TSC with Keypad Scanner and GPIO Expander

[AK4184A]
Ξφϩάಛੑ
(Ta = -40°C to 85°C, AVDD = IOVDD = 3.3V, fs = 125 KHz, fSCLK = 5MHz)
Parameter
min
typ
ADC for Touch Screen
Resolution
No Missing Codes
-
12
11
12
Integral Nonlinearity (INL) Error
-
-
Differential Nonlinearity (DNL) Error
Offset Error
-
±1
-
-
Gain Error
-
-
Touch Panel Drivers Switch On-Resistance
XP, YP, RL = 300Ω
XN, YN, RL = 300Ω
-
10
-
10
XP Pull Up Resistance (when pen interrupt enable)
-
50
Power Supply Current
Touch Screen only fs = 125KHz (PD bit = “0”)
-
400
Touch Screen only fs = 125KHz (PD bit = “1”)
-
500
Oscillator on, Touch Screen Driver off, A/D power down
-
72
Full Power Down (all blocks power down when CSN = “H”,
RESETN = “H”)
-
0
max
Units
-
Bits
Bits
±2
LSB
-
LSB
±6
LSB
±4
LSB
-
Ω
-
Ω
-
KΩ
680
μA
850
μA
120
μA
5
μA
DC ಛੑ(Logic I/O)
(Ta = -40°C to 85°C, IOVDD = 1.6V to 3.6V)
Parameter
Symbol
min
Digital Input (CSN, SCLK, DIN, R1 ~ R5, GP0 ~ GP7 pins)
“H” level input voltage
VIH 0.8xIOVDD
“L” level input voltage
VIL
-
Input Leakage Current
IILK
-10
Digital Output (DOUT, BUSY, BRCONT, PENIRQN, KEYIRQN pins)
“H” level output voltage (@ Iout = -250μA)
VOH IOVDD-0.4
“L” level output voltage (@ Iout = 250μA)
VOL
-
Digital Output (GP0 ~ GP7 pins)
“H” level output voltage (@ Iout = -1.5mA)
VOH IOVDD-0.4
“L” level output voltage (@ Iout = 1.5mA)
VOL
-
Digital Output (C1 ~ C6 pins)
“H” level output voltage (@ Iout = -1.5mA)
VOH IOVDD-0.4
Resistance
Pulldown Resistance (R1 ~ R5 pins)
Rkey
-
Pulldown Resistance (GP0 ~ GP7 pins @ input)
Rgp
-
Tri-state Leakage Current
IOLK
All pins except for XP, YP, XN, YN pins
-10
XP, YP, XN, YN pins
-50
typ
-
-
-
-
-
-
-
-
16
1000
-
-
max
Units
-
V
0.2xIOVDD V
10
μA
-
V
0.4
V
-
V
0.4
V
-
V
-
KΩ
-
KΩ
10
µA
50
µA
MS0947-J-00
-7-
2008/04