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參數(shù)資料
| 型號(hào)： | SPEAR-09-B042 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 100M bps, I2C BUS CONTROLLER, PBGA289 |
| 封裝： | 15 X 15 MM, 1.70 MM HEIGHT, ROHS COMPLIANT, LFBGA-289 |
| 文件頁(yè)數(shù)： | 59/66頁(yè) |
| 文件大?。?/td> | 917K |
| 代理商： | SPEAR-09-B042 |
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Electrical characteristics
SPEAR-09-B042
10.4
LPDDR and DDR2 pad electrical characteristics
10.5
Power up sequence
The only requirement is that the various power supplies reach the correct range in less than
10 ms.
10.6
PowerGood
The PowerGood signal should remain active for at least 10 ms after all the power supplies
are in the correct range and should become active within 10 s of any of the power supplies
going out of the correct range.
Table 29.
DC characteristics
Symbol
Description
Test condition
Min
Max
Unit
Vil
Low level input voltage
SSTL18
-0.3
Vref-0.125
V
Vih
High level input voltage
SSTL18
Vref+0.125 Vdde1V8+0.3
V
Vhyst
Input voltage hysteresis
200
mV
Table 30.
Driver characteristics
Symbol
Description
Test condition
Min
Typ
Max
Unit
Ro
Output impedance
45
Ω
Table 31.
On die termination
Symbol
Description
Test condition
Min
Typ
Max
Unit
RT1
Termination value of resistance for
on die termination
75
Ω
RT2
Termination value of resistance for
on die termination
150
Ω
Table 32.
Reference voltage
Symbol
Description
Test
condition
Min
Typ
Max
Unit
VREFIN
Voltage applied at core/pad
0.49
* Vdde
0.500
* Vdde
0.51
* Vdde
V
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