Absolute Maximum Ratings
參數(shù)資料
型號(hào)： MCP79400-I/SN
廠商： Microchip Technology
文件頁(yè)數(shù)： 9/15頁(yè)
文件大小： 0K
描述： IC RTCC 64B SRAM 8SOIC
標(biāo)準(zhǔn)包裝： 100
類型： 時(shí)鐘/日歷
特點(diǎn)： 警報(bào)器，閏年，方波輸出，SRAM，唯一 ID
存儲(chǔ)容量： 64B
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： I²C，2 線串口
電源電壓： 1.8 V ~ 5.5 V
電壓 - 電源，電池： 1.3 V ~ 5.5 V
工作溫度： -40°C ~ 85°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-SOICN
包裝： 管件
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°C to +150°C
Ambient temperature with power applied................................................................................................-40°C to +125°C
ESD protection on all pins
4 kV
TABLE 1-1:
DC CHARACTERISTICS
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.
DC CHARACTERISTICS
Electrical Characteristics:
Industrial (I):
VCC = +1.8V to 5.5V
TA = -40°C to +85°C
Param.
No.
Sym.
Characteristic
Min.
Typ.
Max.
Units
Conditions
—
SCL, SDA pins
—
D1
VIH
High-level input voltage
0.7 VCC
—V
—
D2
VIL
Low-level input voltage
—
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
—V
D4
VOL
Low-level output voltage
(MFP, SDA)
—0.40
V
IOL = 3.0 ma @ VCC = 4.5V
IOL = 2.1 ma @ VCC = 2.5V
D5
ILI
Input leakage current
—
±1
AVIN = VSS or VCC
D6
ILO
Output leakage current
—
±1
AVOUT = VSS or VCC
D7
CIN,
COUT
Pin capacitance
(SDA, SCL and MFP)
—10
pF
VCC = 5.0V (Note 1)
TA = 25°C, f = 400 kHz
D8
ICC Read Operating current
ID
—
400
AVCC = 5.5V, SCL = 400 kHz
ICC Write
—
3
mA
VCC = 5.5V
D9
ICC Read Operating current
SRAM
—
300
AVCC = 5.5V, SCL = 400 kHz
ICC Write
—
400
AVCC = 5.5V, SCL = 400 kHz
D10
ICCS
Standby current
—
1
AVCC = 5.5V, SCL = SDA = VCC
D11
IBAT
Operating Current
—
700
—
nA
VBAT = 1.8V @ 25°C, Figure 2-1
IVCC
—5
—
AVCC = 3.6V @ 25°C, Figure 2-2
D12
VTRIP
VBAT Change Over
1.3
1.7
V
1.5V typical at TAMB = 25°C
D13
VCCFT
VCC Fall Time (Note 1)
300
—
sFrom VTRIP (max) to VTRIP (min)
D14
VCCRT
VCC Rise Time (Note 1)
0—
sFrom VTRIP (min) to VTRIP (max)
D15
VBAT
VBAT Voltage Range
1.3
5.5
V
—
D16
COSC
Oscillator Pin
Capacitance
—3
—
pF
Note 1:
This parameter is periodically sampled and not 100% tested.
2:
Standby with oscillator running.
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