MCP79400_16 Datasheet, PDF (3/62 Pages) Microchip Technology – Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM

MCP79400/MCP79401/MCP79402
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings ^(†)
VCC............................................................................................................................................................................. 6.5V
All inputs and outputs (except SDA and SCL) w.r.t. VSS.....................................................................-0.6V to VCC +1.0V
SDA and SCL w.r.t. VSS ............................................................................................................................... -0.6V to 6.5V
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
DC CHARACTERISTICS
Electrical Characteristics:
Industrial (I):
VCC = +1.8V to 5.5V
TA = -40°C to +85°C
Param.
No.
Symbol
Characteristic
Min. Typ.⁽²⁾ Max. Units
Conditions
D1
VIH High-Level Input Voltage
0.7 VCC —
—
V
D2
VIL Low-Level Input Voltage
—
— 0.3 VCC V VCC ≥ 2.5V
—
— 0.2 VCC V VCC < 2.5V
D3
VHYS Hysteresis of Schmitt
Trigger Inputs
(SDA, SCL pins)
0.05 VCC —
—
V Note 1
D4
VOL Low-Level Output Voltage
—
—
0.40
V IOL = 3.0 mA; VCC = 4.5V
(MFP, SDA pins)
IOL = 2.1 mA; VCC = 2.5V
D5
ILI Input Leakage Current
—
—
±1
µA VIN = VSS or VCC
D6
ILO Output Leakage Current
—
—
±1
µA VOUT = VSS or VCC
D7
CIN, Pin Capacitance
COUT (SDA, SCL, MFP pins)
—
—
10
pF VCC = 5.0V (Note 1)
TA = 25°C, f = 1 MHz
D8
COSC Oscillator Pin Capacitance
—
3
—
pF Note 1
(X1, X2 pins)
D9
ICCEERD EEPROM Operating
—
ICCEEWR ^Current
—
D10
ICCREAD SRAM/RTCC Register
—
ICCWRITE ^{Operating Current}
—
D11
ICCDAT VCC Data-Retention Current
—
(oscillator off)
—
400
µA VCC = 5.5V, SCL = 400 kHz
—
3
mA VCC = 5.5V
—
300
µA VCC = 5.5V, SCL = 400 kHz
—
400
µA VCC = 5.5V, SCL = 400 kHz
—
1
µA SCL, SDA, VCC = 5.5V
D12
ICCT Timekeeping Current
D13
VTRIP Power-Fail Switchover
Voltage
—
1.2
—
µA VCC = 3.3V (Note 1)
1.3
1.5
1.7
V
D14
VBAT Backup Supply Voltage
Range
1.3
—
5.5
V Note 1
Note 1: This parameter is not tested but ensured by characterization.
2: Typical measurements taken at room temperature.
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DS20005009F-page 3