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X24128S14-1.8 参数 Datasheet PDF下载

X24128S14-1.8图片预览
型号: X24128S14-1.8
PDF下载: 下载PDF文件 查看货源
内容描述: 400kHz的2线串行E2PROM与锁座 [400KHz 2-Wire Serial E2PROM with Block Lock]
分类和应用: 存储内存集成电路光电二极管双倍数据速率可编程只读存储器电动程控只读存储器电可擦编程只读存储器时钟
文件页数/大小: 17 页 / 89 K
品牌: XICOR [ XICOR INC. ]
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X24128  
Bus Timing  
t
t
t
t
HIGH  
LOW  
R
F
SCL  
t
t
t
t
t
SU:STA  
HD:STA  
HD:DAT  
SU:DAT  
SU:STO  
SDAIN  
t
t
t
AA  
DH  
BUF  
SDAOUT  
7027 FM 14  
Write Cycle Limits  
Symbol  
(5)  
Parameter  
Min.  
Typ.  
Max.  
Units  
ms  
(6)  
TWC  
Write Cycle Time  
5
10  
7027 FRM T11  
Notes: (5) Typical values are for T = 25°C and nominal supply voltage (5V).  
A
(6) t  
is the minimum cycle time to be allowed from the system perspective unless polling techniques are used. It is the maximum  
WR  
time the device requires to automatically complete the internal write operation.  
The write cycle time is the time from a valid stop condition of a write sequence to the end of the internal erase/write  
cycle. During the write cycle, the X24128 bus interface circuits are disabled, SDA is allowed to remain HIGH, and  
the device does not respond to its slave address.  
Bus Timing  
SCL  
ACK  
SDA  
8th BIT  
WORD n  
t
WR  
STOP  
CONDITION  
START  
CONDITION  
7027 FM 15  
Guidelines for Calculating Typical Values of  
Bus Pull-Up Resistors  
SYMBOL TABLE  
WAVEFORM  
INPUTS  
OUTPUTS  
120  
V
Must be  
steady  
Will be  
steady  
CC MAX  
R
=
=1.8KΩ  
MIN  
I
100  
80  
OL MIN  
t
R
May change  
from Low to  
High  
Will change  
from Low to  
High  
R
=
MAX  
C
BUS  
MAX.  
60  
40  
20  
0
RESISTANCE  
May change  
from High to  
Low  
Will change  
from High to  
Low  
MIN.  
Don’t Care:  
Changes  
Allowed  
Changing:  
State Not  
Known  
RESISTANCE  
20 40 60 80  
0
100 120  
N/A  
Center Line  
is High  
Impedance  
BUS CAPACITANCE (pF)  
7027 FM 16  
7027 FM 17  
13