參數(shù)資料
型號: S3C8478XX-QZ
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, QFP-44
文件頁數(shù): 7/24頁
文件大小: 165K
代理商: S3C8478XX-QZ
S3C8478/C8475/P8475
ELECTRICAL DATA
14-7
Table 14-6. UART Timing Characteristics in Mode 0 (10 MHz)
(TA = – 40°C to + 85°C, VDD = 1.8 V to 5.5 V, Load capacitance = 80 pF)
Parameter
Symbol
Min
Typ
Max
Unit
Serial port clock cycle time
t
SCK
500
t
CPU × 6
700
ns
Output data setup to clock rising edge
t
S1
300
t
CPU × 5
Clock rising edge to input data valid
t
S2
300
Output data hold after clock rising edge
t
H1
t
CPU – 50
t
CPU
Input data hold after clock rising edge
t
H2
0
Serial port clock High, Low level width
t
HIGH, tLOW
200
t
CPU × 3
400
NOTES:
1.
All timings are in nanoseconds (ns) and assume a 10-MHz CPU clock frequency.
2.
The unit tCPU means one CPU clock period.
tHIGH
0.8 V DD
0.2 V DD
tLOW
tSCK
Figure 14-3. Waveform for UART Timing Characteristics
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