[AK4184]
SWITCHING CHARACTERISTICS
Ta = -40°C to 85°C, AVDD = 2.5V to 3.6V, IOVDD = 1.6V to AVDD, CL = 20pF
Parameter
Symbol
min
Internal oscillator frequency
fosc
0.9
Touch Panel (A/D Converter)
SCLK period
tCP
200
tSam
1.5
Sampling Time (Rin=600Ω)
Throughput Rate
fs
-
Conversion Time
tCONV
24
Timing Characteristics
SCLK Pulse Width Low
tCKL
80
Pulse Width High
tCKH
80
tCSS
300
CSN “↓” to First SCLK “↓”
tDV
-
CSN “↓” to DOUT Tri-State Disabled
Data Setup Time
tDS
40
Data Hold Time
tDH
40
tDD
-
Data Output Delay after SCLK“↓”
tCDZ
-
CSN “↑” to DOUT Hi-Z state
CSN “H” Time
tCSW
150
tCSH
50
SCLK “↑” to CSN “↑”
Reset Timing
RESETN Pulse Width (Note 5)
tRST
150
Note 5. Device is reset by pull RESETN pin to “L”.
typ
1.3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
max
1.7
1000
-
125
-
-
-
-
50
-
-
50
70
-
-
-
Units
MHz
ns
μs
KHz
tCP
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tCSW
CSN
tCP
tCSS
tCKH
VIH
VIL
tCKL
tDS
tDH
VIH
VIL
tDD
tCSH
VIH
VIL
SCLK
DIN
tDV
DOUT
D11
Hi-Z
D10
D0
tCDZ
Hi-Z
50%IOVDD
Figure 1. Timing Diagram
tRST
RESETN
VIL
Figure 2. Power-down & Reset Timing
MS0603-E-00
8
2007/04
AKM [ ASAHI KASEI MICROSYSTEMS ]
