參數(shù)資料
型號(hào): CXD4000R
英文描述: Fingerprint Verification System LSI
中文描述: 指紋識(shí)別系統(tǒng)LSI
文件頁(yè)數(shù): 13/14頁(yè)
文件大小: 216K
代理商: CXD4000R
13
CXD4000R
(9) USB Interface
(Within the recommended operating range)
Item
Output impedance
Rise time
Fall time
Rise/fall ratio
Output signal crossover voltage
Symbol
Zdrv
Tr
Tf
Tr/Tf
Vcrs
Conditions
Min.
Max.
28
4
4
0.9
1.3
Unit
ns
ns
V
CL = 50pF
CL = 50pF
CL = 50pF
CL = 50pF
43
20
20
1.1
2.0
1
Connect the DP and DM pins to the USB cable through 27
resistors.
Fig. 9. USB Interface Connection Circuit
CXD4000R
27
1
27
1
1.5k
V
DD
DM
DP
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