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参数资料
| 型号： | S3C9678XX-AQ |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, SDIP-42 |
| 文件页数： | 10/26页 |
| 文件大小： | 162K |
| 代理商： | S3C9678XX-AQ |
ELECTRICAL DATA
S3C9674/C9678/P9678 (Preliminary Spec)
13-8
Table 13-8. Low Speed USB Electrical Characteristics
(T
A = – 40°C to + 85°C, Voltage Regulator Output V33out = 2.8 V to 3.5 V, typ 3,3 V)
Parameter
Symbol
Conditions
Min
Max
Unit
Transition Time:
Rise Time
Tr
CL = 50 pF
75
–
ns
CL = 350 pF
–
300
Fall Time
Tf
CL = 50 pF
75
–
CL = 350 pF
–
300
Rise/Fall Time Matching
Trfm
(Tr/Tf) CL = 50 pF
80
120
%
Output Signal Crossover Voltage
Vcrs
CL = 50 pF
1.3
2.0
V
Voltage Regulator Output Voltage
V
33OUT
with V
33OUT to GND 0.1 F
capacitor
2.8
3.5
V
R1 = 15 K
R2 = 1.5 K
CL = 50 pF - 350 pF
DM: S/W ON
DP: S/W OFF
D. U. T
Test
Point
S/W
2.8 V
R2
R1
C2
90 %
Measurement
Points
10 %
90 %
10 %
Tr
Tf
Figure 13-5. USB Data Signal Rise and Fall Time
DM
DP
Vcrs
MAX: 2.0 V
MIN: 1.3 V
3.3 V
0 V
Figure 13-6. USB Output Signal Crossover Point Voltage
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