参数资料
型号: WE128K32-250G4CA
厂商: MICROSEMI CORP-PMG MICROELECTRONICS
元件分类: PROM
英文描述: 128K X 32 EEPROM 5V MODULE, 250 ns, CQMA68
封装: CERAMIC, QFP-68
文件页数: 13/15页
文件大小: 297K
代理商: WE128K32-250G4CA
7
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
WE128K32-XXX
DATA POLLING
The WE128K32-XXX offers a data polling feature which allows
a faster method of writing to the device. Figure 8 shows the
timing diagram for this function. During a byte or page write
cycle, an attempted read of the last byte written will result in
the complement of the written data on D7 (for each chip.) Once
the write cycle has been completed, true data is valid on all
outputs and the next cycle may begin. Data polling may begin
at any time during the write cycle.
DATA POLLING CHARACTERISTICS
(VCC = 5.0V, VSS = 0V, TA = -55
°C to +125°C)
FIG. 8
DATA POLLING
WAVEFORMS
Parameter
Symbol
Min
Max
Unit
Data Hold Time
tDH
10
ns
OE Hold Time
tOEH
10
ns
OE To Output Valid
tOE
55
ns
Write Recovery Time
tWR
0ns
WE1-4
t OEH
t DH
t OE
t WR
HIGH Z
CS1-4
OE
I/O7
ADDRESS
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