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参数资料
| 型号： | S2R72A44F12C4 |
| 元件分类： | 总线控制器 |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, QFP-48 |
| 文件页数： | 19/30页 |
| 文件大小： | 529K |
| 代理商： | S2R72A44F12C4 |
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8.
Electrical Characteristics
S2R72A4xF12C4 Series Data Sheet
Seiko Epson Corporation
23
(Rev.1.00)
8.4
AC characteristics
8.4.1
Power on/off timing
A Power on/off timing (recommended sequence: LVDD
HVDD/HVDD
LVDD)
Timing parameters
Voltage parameters
Item
Code
min
typ
max
Unit
HVDD power on timing
Tlhh
0
–
10
sec
HVDD power off timing
Thll
0
–
10
sec
Item
Code
On
Off
Unit
LVDD initial voltage
V_lvdd
LVDD_min
V
HVDD initial voltage
V_hvdd
HVDD_min
V
Voltage conditions
Timing diagram
LVDD
HVDD
V_lvdd
V_hvdd
Tlhh
Thll
B Power on/off timing (HVDD
LVDD/LVDD
HVDD)
Timing parameters
Voltage parameters
Item
Code
min
typ
max
Unit
LVDD power on timing
Tlhh
0
–
1
sec
LVDD power off timing
Thll
0
–
1
sec
Item
Code
On
Off
Unit
LVDD initial voltage
V_lvdd
LVDD_min
V
HVDD initial voltage
V_hvdd
0.1
V
Voltage conditions
Timing diagram
HVDD
LVDD
V_hvdd
V_lvdd
Tlhh
Thll
* When both timings for power on and off are LVDD
HVDD, refer to A for power on and B for power off.
Likewise, when both timings for power on and off are HVDD
LVDD, refer to B for power on and A for
power off.
*:
LVDD_min is the minimum value for LVDD, and HVDD_min is the minimum value for HVDD, which are
defined respectively in 7.2.
0.3
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