QL4090-4PQ208C 查看數據表（PDF） - QuickLogic Corporation
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QL4090-4PQ208C Datasheet PDF : 18 Pages
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Power-up Sequencing
QL4009 QuickRAM Data Sheet Rev C
VCCIO
VCC
(VCCIO -VCC)MAX
VCC
400 us
Time
Figure 7: Power-up Requirements
When powering up a device, the VCC/VCCIO rails must take 400 µs or longer to reach the
maximum value (refer to Figure 7).
NOTE: Ramping VCC/VCCIO to the maximum voltage faster than 400 µs can cause the
device to behave improperly.
For users with a limited power budget, keep (VCCIO -VCC)MAX ≤ 500 mV when ramping up
the power supply.
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