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E28F200CVT80 参数 Datasheet PDF下载

E28F200CVT80图片预览
型号: E28F200CVT80
PDF下载: 下载PDF文件 查看货源
内容描述: 2兆位SmartVoltage引导块闪存系列 [2-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY]
分类和应用: 闪存
文件页数/大小: 55 页 / 633 K
品牌: INTEL [ INTEL ]
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E
2-MBIT SmartVoltage BOOT BLOCK FAMILY  
1.5  
Pin Descriptions  
Table 2. 28F200/002 Pin Descriptions  
Symbol  
Type  
Name and Function  
ADDRESS INPUTS for memory addresses. Addresses are internally latched  
during a write cycle. The 28F200 only has A0– A16 pins, while  
A0–A17  
INPUT  
the 28F002B has A0– A17  
.
A9  
INPUT  
ADDRESS INPUT: When A9 is at VHH the signature mode is accessed. During  
this mode, A0 decodes between the manufacturer and device IDs. When BYTE#  
is at a logic low, only the lower byte of the signatures are read. DQ15/A–1 is a  
don’t care in the signature mode when BYTE# is low.  
DQ0–DQ7  
DQ8–DQ15  
INPUT/ DATA INPUTS/OUTPUTS: Inputs array data on the second CE# and WE# cycle  
OUTPUT during a Program command. Inputs commands to the Command User Interface  
when CE# and WE# are active. Data is internally latched during the write cycle.  
Outputs array, Intelligent Identifier and status register data. The data pins float to  
tri-state when the chip is de-selected or the outputs are disabled.  
INPUT/ DATA INPUTS/OUTPUTS: Inputs array data on the second CE# and WE# cycle  
OUTPUT during a Program command. Data is internally latched during the write cycle.  
Outputs array data. The data pins float to tri-state when the chip is de-selected or  
the outputs are disabled as in the byte-wide mode (BYTE# = “0”). In the byte-wide  
mode DQ15/A–1 becomes the lowest order address for data output on DQ0–DQ7.  
The 28F002B does not include these DQ8–DQ15 pins.  
CE#  
INPUT  
CHIP ENABLE: Activates the device’s control logic, input buffers, decoders and  
sense amplifiers. CE# is active low. CE# high de-selects the memory device and  
reduces power consumption to standby levels. If CE# and RP# are high, but not  
at a CMOS high level, the standby current will increase due to current flow  
through the CE# and RP# input stages.  
OE#  
WE#  
INPUT  
INPUT  
OUTPUT ENABLE: Enables the device’s outputs through the data buffers during  
a read cycle. OE# is active low.  
WRITE ENABLE: Controls writes to the Command Register and array blocks.  
WE# is active low. Addresses and data are latched on the rising edge of the WE#  
pulse.  
RP#  
INPUT  
RESET/DEEP POWER-DOWN: Uses three voltage levels (VIL, VIH, and VHH) to  
control two different functions: reset/deep power-down mode and boot block  
unlocking. It is backwards-compatible with the BX/BL/BV products.  
When RP# is at logic low, the device is in reset/deep power-down mode,  
which puts the outputs at High-Z, resets the Write State Machine, and draws  
minimum current.  
When RP# is at logic high, the device is in standard operation. When RP#  
transitions from logic-low to logic-high, the device defaults to the read array mode.  
When RP# is at VHH, the boot block is unlocked and can be programmed or  
erased. This overrides any control from the WP# input.  
11  
SEE NEW DESIGN RECOMMENDATIONS  
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