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X1240 参数 Datasheet PDF下载

X1240图片预览
型号: X1240
PDF下载: 下载PDF文件 查看货源
内容描述: 实时时钟/日历与EEPROM [Real Time Clock/Calendar with EEPROM]
分类和应用: 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: 19 页 / 78 K
品牌: XICOR [ XICOR INC. ]
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X1240  
(3) The device goes into the Timekeeping state 200nS after any stop, except those that initiate a non-volatile write cycle; t  
after a  
WC  
stop that initiates a non-volatile write cycle; or 9 clock cycles after any start that is not followed by the correct Device Select Bits in  
the Slave Address Byte.  
(4) For reference only and not tested.  
(5)  
(6)  
(7)  
(8)  
(9)  
V
V
V
V
V
= V x 0.1, V = V x 0.9, f  
= 400KHz, SDA = Open  
IL  
CC  
IH  
CC  
SCL  
SCL  
= V x 0.1, V = V x 0.9, f  
= 400KHz, f  
= 400KHz, Vcc = 1.22 x Vcc Min  
SDA  
IL  
CC  
IH  
CC  
= 0V.  
CC  
= 0V.  
BACK  
=V  
=V , Others=GND or V  
CC  
SDA SCL CC  
(10) V  
(11) V  
=V  
=V  
, Others=GND or V  
SDA SCL BACK  
BACK  
= GND or V  
CC, CLK CC  
= GND to V  
V
SDA  
(12) I = 3.0mA at 5V, 1.5mA at 2.7V  
OL  
(13) I  
= -1.0mA at 5V, -0.4mA at 2.7V  
OH  
(14) Threshold voltages based on the higher of Vcc or Vback.  
(15) Driven by external 32.768KHz square wave oscillator on X1, X2 open.  
(16) Using recommended crystal and oscillator network applied to X1 and X2 (25°C).  
(17) Periodically sampled and not 100% tested.  
CAPACITANCE (T = 25˚C, f = 1.0 MHz, V = 5V)  
A
CC  
Symbol  
Parameter  
Max  
Units  
Test Conditions  
= 0V  
C
(Notes:)  
OUT  
V
Output Capacitance (SDA)  
Input Capacitance (SCL)  
8
pF  
OUT  
(Notes:)  
V
= 0V  
C
6
pF  
IN  
IN  
Notes: (1) This parameter is periodically sampled and not 100% tested.  
AC CHARACTERISTICS  
AC Test Conditions  
EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR  
= 5V (Standard Output Load for testing the device  
V
CC  
Input Pulse Levels  
V
x 0.1 to V x 0.9  
CC  
CC  
with V = 5.0V)  
CC  
Input Rise and Fall Times 10ns  
5.0V  
Input and Output Timing  
Levels  
V
CC  
x 0.5  
For V = 0.4V  
OL  
1533Ω  
Output Load  
Standard Output Load  
and I = 3 mA  
OL  
SDA  
100pF  
14