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参数资料
| 型号： | PH28F128W18BD60A |
| 厂商： | INTEL CORP |
| 元件分类： | PROM |
| 英文描述： | 8M X 16 FLASH 1.8V PROM, 60 ns, PBGA56 |
| 封装： | 9 X 11 MM, 1 MM HEIGHT, LEAD FREE, VFBGA-56 |
| 文件页数： | 54/106页 |
| 文件大小： | 1496K |
| 代理商： | PH28F128W18BD60A |
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Intel
Wireless Flash Memory (W18)
Datasheet
Intel Wireless Flash Memory (W18)
07-Dec-2005
Order Number: 290701, Revision: 015
51
8.0
Power and Reset Specifications
Intel
Wireless Flash Memory (W18) devices have a layered approach to power savings that can
significantly reduce overall system power consumption. The APS feature reduces power
consumption when the device is selected but idle. If CE# is deasserted, the memory enters its
standby mode, where current consumption is even lower. Asserting RST# provides current savings
similar to standby mode. The combination of these features can minimize memory power
consumption, and therefore, overall system power consumption.
8.1
Active Power
consumes the most power from the system. Minimizing device active current therefore reduces
system power consumption, especially in battery-powered applications.
8.2
Automatic Power Savings (APS)
Automatic Power Saving (APS) provides low-power operation during a read’s active state. During
APS mode, ICCAPS is the average current measured over any 5 ms time interval 5 s after the
following events happen:
There is no internal sense activity;
CE# is asserted;
The address lines are quiescent, and at V
SSQ or VCCQ.
OE# may be asserted during APS.
8.3
Standby Power
With CE# at VIH and the device in read mode, the flash memory is in standby mode, which disables
most device circuitry and substantially reduces power consumption. Outputs are placed in a high-
impedance state independent of the OE# signal state. If CE# transitions to VIH during erase or
program operations, the device continues the operation and consumes corresponding active power
until the operation is complete. ICCS is the average current measured over any 5 ms time interval 5
s after a CE# de-assertion.
8.4
Power-Up/Down Characteristics
The device is protected against accidental block erasure or programming during power transitions.
Power supply sequencing is not required if VCC, VCCQ, and VPP are connected together; so it
doesn’t matter whether VPP or VCC powers-up first. If VCCQ and/or VPP are not connected to the
system supply, then VCC should attain VCCMIN before applying VCCQ and VPP. Device inputs
should not be driven before supply voltage = VCCMIN. Power supply transitions should only occur
when RST# is low.
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