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MCP7940M 参数 Datasheet PDF下载

MCP7940M图片预览
型号: MCP7940M
PDF下载: 下载PDF文件 查看货源
内容描述: 低成本I2Câ ?? ¢实时时钟/日历与SRAM [Low-Cost I2C™ Real-Time Clock/Calendar with SRAM]
分类和应用: 静态存储器时钟
文件页数/大小: 38 页 / 1006 K
品牌: MICROCHIP [ MICROCHIP ]
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MCP7940M  
1.0  
ELECTRICAL CHARACTERISTICS  
(†)  
Absolute Maximum Ratings  
VCC.............................................................................................................................................................................6.5V  
All inputs and outputs w.r.t. VSS ..........................................................................................................-0.6V to VCC +1.0V  
Storage temperature ...............................................................................................................................-65°C to +150°C  
Ambient temperature with power applied................................................................................................-40°C to +125°C  
ESD protection on all pins  4 kV  
† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the  
device. This is a stress rating only and functional operation of the device at those or any other conditions above those  
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for  
extended periods may affect device reliability.  
TABLE 1-1:  
DC CHARACTERISTICS  
Electrical Characteristics:  
Industrial (I): VCC = +1.8V to 5.5V  
DC CHARACTERISTICS  
TA = -40°C to +85°C  
Param.  
Sym.  
No.  
Characteristic  
Min.  
Typ.  
Max.  
Units  
Conditions  
SCL, SDA pins  
0.7 VCC  
V
D1  
D2  
VIH  
VIL  
High-level input voltage  
Low-level input voltage  
0.3 VCC  
0.2 VCC  
V
VCC = 2.5V to 5.5V  
D3  
D4  
VHYS  
VOL  
Hysteresis of Schmitt  
Trigger inputs  
(SDA, SCL pins)  
0.05  
VCC  
V
V
(Note 1)  
Low-level output voltage  
(MFP, SDA)  
0.40  
IOL = 3.0 ma @ VCC = 4.5V  
IOL = 2.1 ma @ VCC = 2.5V  
D5  
D6  
D7  
ILI  
Input leakage current  
Output leakage current  
±1  
±1  
10  
A  
A  
pF  
VIN = VSS or VCC  
ILO  
VOUT = VSS or VCC  
CIN,  
Pin capacitance  
VCC = 5.0V (Note 1)  
COUT  
(SDA, SCL and MFP)  
TA = 25°C, f = 400 kHz  
D8  
ICC Read Operating current  
300  
400  
1
A  
A  
A  
A  
pF  
VCC = 5.5V, SCL = 400 kHz  
VCC = 5.5V, SCL = 400 kHz  
VCC = 5.5V, SCL = SDA = VCC  
VCC = 5.5V @ 25°C (Note 2)  
(Note 1)  
SRAM  
ICC Write  
D9  
ICCS  
Standby current  
D10  
D11  
IVcc  
Operating Current  
25  
3
COSC  
Oscillator Pin  
Capacitance  
Note 1: This parameter is periodically sampled and not 100% tested.  
2: Oscillator Running.  
2012 Microchip Technology Inc.  
Preliminary  
DS22292A-page 3  
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