Absolute Maximum Ratings
鍙冩暩璩囨枡
鍨嬭櫉锛� MCP79400T-I/MS
寤犲晢锛� Microchip Technology
鏂囦欢闋佹暩锛� 9/15闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC RTCC 64B SRAM GP I2C 8MSOP
妯欐簴鍖呰锛� 2,500
椤炲瀷锛� 鏅傞悩/鏃ユ
鐗归粸锛� 璀﹀牨鍣�锛岄枏骞�锛屾柟娉㈣几鍑�锛孲RAM锛屽敮涓€ ID
瀛樺劜瀹归噺锛� 64B
鏅傞枔鏍煎紡锛� HH:MM:SS锛�12/24 灏忔檪锛�
鏁告摎鏍煎紡锛� YY-MM-DD-dd
鎺ュ彛锛� I²C锛�2 绶氫覆鍙�
闆绘簮闆诲锛� 1.8 V ~ 5.5 V
闆诲 - 闆绘簮锛岄浕姹狅細 1.3 V ~ 5.5 V
宸ヤ綔婧害锛� -40°C ~ 85°C
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
灏佽/澶栨锛� 8-TSSOP锛�8-MSOP锛�0.118"锛�3.00mm 瀵級
渚涙噳鍟嗚ō鍌欏皝瑁濓細 8-MSOP
鍖呰锛� 甯跺嵎 (TR)
2011 Microchip Technology Inc.
DS25009C-page 3
MCP7940X
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掳C to +150掳C
Ambient temperature with power applied................................................................................................-40掳C to +125掳C
ESD protection on all pins
4 kV
TABLE 1-1:
DC CHARACTERISTICS
NOTICE: Stresses above those listed under 鈥淎bsolute Maximum Ratings鈥� 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.
DC CHARACTERISTICS
Electrical Characteristics:
Industrial (I):
VCC = +1.8V to 5.5V
TA = -40掳C to +85掳C
Param.
No.
Sym.
Characteristic
Min.
Typ.
Max.
Units
Conditions
鈥�
SCL, SDA pins
鈥�
D1
VIH
High-level input voltage
0.7 VCC
鈥擵
鈥�
D2
VIL
Low-level input voltage
鈥�
0.3 VCC
0.2 VCC
VVCC = 2.5V to 5.5V
D3
VHYS
Hysteresis of Schmitt
Trigger inputs
(SDA, SCL pins)
0.05
VCC
鈥擵
D4
VOL
Low-level output voltage
(MFP, SDA)
鈥�0.40
V
IOL = 3.0 ma @ VCC = 4.5V
IOL = 2.1 ma @ VCC = 2.5V
D5
ILI
Input leakage current
鈥�
卤1
AVIN = VSS or VCC
D6
ILO
Output leakage current
鈥�
卤1
AVOUT = VSS or VCC
D7
CIN,
COUT
Pin capacitance
(SDA, SCL and MFP)
鈥�10
pF
VCC = 5.0V (Note 1)
TA = 25掳C, f = 400 kHz
D8
ICC Read Operating current
ID
鈥�
400
AVCC = 5.5V, SCL = 400 kHz
ICC Write
鈥�
3
mA
VCC = 5.5V
D9
ICC Read Operating current
SRAM
鈥�
300
AVCC = 5.5V, SCL = 400 kHz
ICC Write
鈥�
400
AVCC = 5.5V, SCL = 400 kHz
D10
ICCS
Standby current
鈥�
1
AVCC = 5.5V, SCL = SDA = VCC
D11
IBAT
Operating Current
鈥�
700
鈥�
nA
VBAT = 1.8V @ 25掳C, Figure 2-1
IVCC
鈥�5
鈥�
AVCC = 3.6V @ 25掳C, Figure 2-2
D12
VTRIP
VBAT Change Over
1.3
1.7
V
1.5V typical at TAMB = 25掳C
D13
VCCFT
VCC Fall Time (Note 1)
300
鈥�
sFrom VTRIP (max) to VTRIP (min)
D14
VCCRT
VCC Rise Time (Note 1)
0鈥�
sFrom VTRIP (min) to VTRIP (max)
D15
VBAT
VBAT Voltage Range
1.3
5.5
V
鈥�
D16
COSC
Oscillator Pin
Capacitance
鈥�3
鈥�
pF
Note 1:
This parameter is periodically sampled and not 100% tested.
2:
Standby with oscillator running.
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