Datasheet

 2012 Microchip Technology Inc. Preliminary DS22292A-page 3
MCP7940M
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
(†)
VCC.............................................................................................................................................................................6.5V
All inputs and outputs w.r.t. V
SS ..........................................................................................................-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): V
CC = +1.8V to 5.5V TA = -40°C to +85°C
Param.
No.
Sym. Characteristic Min. Typ. Max. Units Conditions
— SCL, SDA pins — — — —
D1 V
IH 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 V
HYS Hysteresis of Schmitt
Trigger inputs
(SDA, SCL pins)
0.05
V
CC
—V(Note 1)
D4 VOL Low-level output voltage
(MFP, SDA)
—0.40VIOL = 3.0 ma @ VCC = 4.5V
I
OL = 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,
C
OUT
Pin capacitance
(SDA, SCL and MFP)
—10pFVCC = 5.0V (Note 1)
T
A = 25°C, f = 400 kHz
D8 I
CC Read Operating current
SRAM
— 300 AVCC = 5.5V, SCL = 400 kHz
ICC Write — 400 AVCC = 5.5V, SCL = 400 kHz
D9 ICCS Standby current — 1 AVCC = 5.5V, SCL = SDA = VCC
D10 IVcc Operating Current 25 AVCC = 5.5V @ 25°C (Note 2)
D11 COSC Oscillator Pin
Capacitance
—3—pF(Note 1)
Note 1: This parameter is periodically sampled and not 100% tested.
2: Oscillator Running.