參數(shù)資料
型號: X1227S8-4.5A
廠商: Intersil
文件頁數(shù): 23/28頁
文件大小: 0K
描述: IC RTC CPU SUP WDT 4K EE 8-SOIC
標(biāo)準(zhǔn)包裝: 100
類型: 時鐘/日歷
特點(diǎn): 警報器,閏年,監(jiān)控器,監(jiān)視計時器
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: I²C,2 線串口
電源電壓: 4.5 V ~ 5.5 V
電壓 - 電源,電池: 1.8 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 管件
其它名稱: X1227S84.5A
4
FN8099.2
May 8, 2006
ABSOLUTE MAXIMUM RATINGS
Temperature Under Bias ................... -65°C to +135°C
Storage Temperature ........................ -65°C to +150°C
Voltage on VCC, VBACK pin
(respect to ground)...............................-0.5V to 7.0V
Voltage on SCL, SDA, X1 and X2
pin (respect to ground) ............... -0.5V to 7.0V or 0.5V
above VCC or VBACK (whichever is higher)
DC Output Current .............................................. 5 mA
Lead Temperature (Soldering, 10 sec).............. 300°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation
of the device at these or any other conditions above
those indicated in the operational sections of this
specification is not implied. Exposure to absolute max-
imum rating conditions for extended periods may
affect device reliability.
DC OPERATING CHARACTERISTICS (Temperature = -40°C to +85°C, unless otherwise stated.)
OPERATING CHARACTERISTICS
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.
(2) The device enters the Program state 200nS after a stop ending a write operation and continues for tWC.
(3) The device goes into the Timekeeping state 200nS after any stop, except those that initiate a nonvolatile write cycle; tWC after a stop
that initiates a nonvolatile 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) VIL = VCC x 0.1, VIH = VCC x 0.9, fSCL = 400KHz
(6) VCC = 0V
(7) VBACK = 0V
(8) VSDA = VSCL=VCC, Others = GND or VCC
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Notes
VCC
Main Power Supply
2.7
5.5
V
VBACK
Backup Power Supply
1.8
5.5
V
VCB
Switch to Backup Supply
VBACK -0.2
VBACK -0.1
V
VBC
Switch to Main Supply
VBACK
VBACK +0.2
V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Notes
ICC1
Read Active Supply
Current
VCC = 2.7V
400
A
1, 5, 7, 14
VCC = 5.0V
800
A
ICC2
Program Supply Current
(nonvolatile)
VCC = 2.7V
2.5
mA
2, 5, 7, 14
VCC = 5.0V
3.0
mA
ICC3
Main Timekeeping
Current
VCC = 2.7V
10
A
3, 7, 8, 14, 15
VCC = 5.0V
20
A
IBACK
Timekeeping Current –
(Low Voltage Sense
and Watchdog Timer
disabled
VBACK = 1.8V
1.25
A
3, 6, 9, 14, 15
“See Perfor-
mance Data”
VBACK = 3.3V
1.5
A
ILI
Input Leakage Current
10
A
10
ILO
Output Leakage Current
10
A
10
VIL
Input LOW Voltage
-0.5
VCC x 0.2 or
VBACK x 0.2
V13
VIH
Input HIGH Voltage
VCC x 0.7 or
VBACK x 0.7
VCC + 0.5 or
VBACK + 0.5
V13
VHYS
Schmitt Trigger Input
Hysteresis
VCC related level
.05 x VCC or
.05 x VBACK
V13
VOL1
Output LOW Voltage for
SDA and RESET
VCC = 2.7V
0.4
V
11
VCC = 5.5V
0.4
X1227
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