參數(shù)資料
型號: S3C8444XX-TW
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP80
封裝: 12 X 12 MM, TQFP-80
文件頁數(shù): 15/44頁
文件大?。?/td> 301K
代理商: S3C8444XX-TW
ELECTRICAL DATA
S3C8444
16–6
Table 16–6. A/D Converter Electrical Characteristics
(TA = – 20°C to + 85°C, VDD = 4.5 V to 6.0 V, VSS = 0 V)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Resolution
8
bit
Absolute
accuracy (1)
VDD = 5.12 V
CPU clock = 18 MHz
AVREF = 5.12 V
AVSS = 0 V
| 3 |
LSB
Conversion
time (2)
tCON
tCPU ×
192 (3)
s
Analog reference
voltage
AVREF
2.56
VDD
V
Analog ground
AVSS
VSS
V
Analog input
voltage
VIAN
AVSS
AVREF
V
Analog input
impedance
RAN
2
M
NOTES:
1.
Excluding quantization error, absolute accuracy equals
± 1/2 LSB.
2.
'Conversion time' is the time required from the moment a conversion operation starts until it ends.
3.
tCPU is the CPU clock period.
Table 16–7. Serial Port Timing Characteristics in Mode 0 (10 MHz)
(TA = – 20°C to + 85°C, VDD = 4.5 V to 6.0V, VSS = 0 V)
Parameter
Symbol
Min
Typ
Max
Unit
Serial port clock cycle time
tSCK
500
tCPU × 6
700
ns
Output data setup to clock rising edge
tS1
300
tCPU × 5
Clock rising edge to input data valid
tS2
300
Output data hold after clock rising edge
tH1
50
tCPU
Input data hold after clock rising edge
tH2
0
Serial port clock high, low width
tHIGH,
tLOW
200
tCPU × 3
400
NOTES:
1.
All times are in ns and assume a 10 MHz input frequency.
2.
The unit tCPU means one CPU clock period.
3.
The oscillator frequency is identical to the CPU clock frequency.
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