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ELECTRICAL DATA S3C9228/P9228
16-8
Table 16-6. A/D Converter Electrical Characteristics
(T
A
= – 25
°
C to + 85
°
C, V
DD
= 2.7 V to 5.5 V, V
SS
= 0 V)
Parameter Symbol Conditions Min Typ Max Unit
Resolution – 10 – bit
Total accuracy VDD = 5.12 V – –
±3
LSB
Integral linearity error ILE fxx = 8 MHz – –
±2
Differential linearity error DLE
f
CON
= fxx/4
– –
±1
Offset error of top EOT –
±1 ±3
Offset error of bottom EOB –
±0.5 ±2
Conversion time
(1)
T
CON
10-bit resolution
50 × fxx/4, fxx = 8MHz
25 – –
µS
Analog input voltage
V
IAN
–
V
SS
–
V
DD
V
Analog input impedance
R
AN
– 2 1000 –
MΩ
Analog input current
I
ADIN
V
DD
= 5 V
– – 10
µA
I
ADC
V
DD
= 5 V
– 1 3 mA
V
DD
= 3 V
0.5 1.5
V
DD
= 5 V
When power down mode
100 500 nA
NOTES:
1. 'Conversion time' is the time required from the moment a conversion operation starts until it ends.
2. I
ADC
is an operating current during A/D conversion.
tINTHtINTL
0.8 VDD
0.2 VDD
NOTE: The unit tCPU means one CPU clock period.
External
Interrupt
Figure 16-3. Input Timing for External Interrupts