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DS20005010J-page 3

MCP7940N

1.0

ELECTRICAL CHARACTERISTICS

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

Industrial (I):

Extended (E):

Param.

No.

Symbol

Characteristic

Conditions

D1

High-Level Input Voltage

——

V

D2

Low-Level Input Voltage

—

—

 2.5V

—

—

D3

Hysteresis of Schmitt

Trigger Inputs

(SDA, SCL pins)

——

V

Note 2

D4

Low-Level Output Voltage

(MFP, SDA pins)

—

—

0.40

V

D5

Input Leakage Current

—

—

±1

µA

D6

Output Leakage Current

—

—

±1

µA

D7

Pin Capacitance

(SDA, SCL, MFP pins)

——

10

pF

D8

Oscillator Pin

Capacitance (X1, X2 pins)

—3

—

pF

Note 2

D9

SRAM/RTCC Register

Operating Current

—

—

300

µA

SCL = 400 kHz

—

—

400

µA

SCL = 400 kHz

D10

Current (oscillator off)

——

1

µA

(I-Temp)

——

5

µA

(E-temp)

D11

Timekeeping Current

—

1.2

—

µA

D12

Power-fail Switchover

Voltage

1.3

1.5

1.7

V

D13

Backup Supply Voltage

Range

1.3

—

5.5

V

Note 2

Note 1: Typical measurements taken at room temperature.

2: This parameter is not tested but ensured by characterization.