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參數(shù)資料
| 型號： | X1209 |
| 英文描述： | Real Time Clock/Calendar with Event/Timestamp Detection & Alarms(帶有事件/時間標(biāo)記檢測與報警功能的實時時鐘/日歷) |
| 中文描述： | 實時時鐘/日歷的事件/時間戳檢測 |
| 文件頁數(shù)： | 6/27頁 |
| 文件大小： | 511K |
| 代理商： | X1209 |
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6 of 27
REV 3.0 2/11/04
www.xicor.com
Preliminary Information
X1209
Notes:
(1)
The device enters the Active state after any start, and remains active: for 9 clock cycles if the Device Select Bits in the Slave
Address Byte are incorrect or until 200nS after a stop ending a read or write operation.
The device enters the Program state 200nS after a stop ending a write operation and continues for t
The device goes into the Timekeeping state 200nS after any stop; or 9 clock cycles after any start that is not followed by the
correct Device Select Bits in the Slave Address Byte.
For reference only and not tested.
V
IL
= V
CC
x 0.1, V
IH
= V
CC
x 0.9, f
SCL
= 400KHz
V
CC
= 0V
VBAT
= 0V
V
SDA
= V
SCL
=V
CC
, Others = GND or V
CC
V
SDA
=V
SCL
=VBAT, Others = GND or VBAT, Note SDA and SCL disabled internally when V
(10) V
SDA
= GND or V
CC
, V
SCL
= GND or V
CC
(11) I
OL
= 3.0mA at 5V, 1mA at 2.7V
(13) Threshold voltages based on the higher of Vcc or VBAT.
(14) Using recommended crystal and oscillator network applied to X1 and X2 (25°C).
(15) Typical values are for T
A
= 25°C
(2)
(3)
WC
.
(4)
(5)
(6)
(7)
(8)
(9)
BAT
supply is ON
Capacitance
T
A
= 25°C, f = 1.0 MHz, V
CC
= 5V
Symbol
C
OUT
(1)
Output Capacitance (SDA, IRQ)
C
IN
(1)
Input Capacitance (SCL)
Notes:
(1) This parameter is not 100% tested.
(2) The input capacitance between x1 and x2 pins can be varied between 5pF and 19.75pF by using analog trimming registers
AC CHARACTERISTICS - SERIAL BUS
AC Test Conditions
Figure 1. Standard Output Load for testing the device with V
CC
= 5.0V
Parameter
Max.
10
10
Units
pF
pF
Test Conditions
V
OUT
= 0V
V
IN
= 0V
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Levels
Output Load
V
CC
x 0.1 to V
CC
x 0.9
10ns
V
CC
x 0.5
Standard Output Load
SDA
1533
100pF
5.0V
For V
OL
= 0.4V
and I
OL
= 3 mA
Equivalent AC Output Load Circuit for V
CC
= 5V
1316
5.0V
IRQ
100pF
806
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