TC1270 datasheet(2/12 Pages) MICROCHIP

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TC1270/TC1271

DS21381B-page 2

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage (VCC to GND) .............................+6.0V

RESET, RESET.......................... -0.3V to (VCC +0.3V)

Input Current, VCC...............................................20mA

Output Current, RESET, RESET .........................20mA

Operating Temperature Range............. -40°C to +85°C

Storage Temperature Range .............. -65°C to +150°C

*Stresses above those listed under "Absolute Maximum

Ratings" may cause permanent damage to the device. These

are stress ratings only and functional operation of the device

at these or any other conditions above those indicated in the

operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TC1270/TC1271 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VCC = 5V for L/M versions, VCC = 3.3V for T/S versions, VCC = 3V for R version, VCC =2.0V for F

version. TA = -40°C to +85°C unless otherwise noted. Typical values are at TA =+25°C.(Note 1).

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

VCC

VCC Range

1.2

—

5.5

ICC

Supply Current

—

µAV

CC >VTH, for L/M/R/S/T/F

VCC <VTH, for L/M/R/S/T

VCC <VTH,for F

VTH

Reset Threshold

4.54

4.50

4.30

4.25

3.03

3.00

2.88

2.85

2.58

2.55

1.71

1.70

4.63

—

4.38

—

3.08

—

2.93

—

2.63

—

1.75

—

4.72

4.75

4.46

4.50

3.14

3.15

2.98

3.00

2.68

2.70

1.79

1.80

TC127_L; TA =+25°C

TA = -40°C to +85°C

TC127_M; TA =+25°C

TA = -40°C to +85°C

TC127_T; TA =+25°C

TA = -40°C to +85°C

TC127_S; TA =+25°C

TA = -40°C to +85°C

TC127_R; TA =+25°C

TA = -40°C to +85°C

TC127_F; TA =+25°C

TA = -40°C to +85°C

Reset Threshold Tempco

—

ppm/°C

VCC to Reset Delay

—

µsec

VCC =VTH to VTH – 125mV; L/M/R/S/T/F

tRP

Reset Active Timeout Period

140

280

560

msec

VCC =VTH(MAX)

tMR

MR Minimum Pulse Width

—

µsec

MR Glitch Immunity

—

0.1

—

µsec

tMD

MR to Reset Propagation Delay

—

0.5

—

µsec

VIH

VIL

MR Input Threshold

2.3

—

0.8

VVCC >VTH(MAX),

TC127_L/M

VIH

VIL

0.7 VCC

—

0.15 VCC

VVCC >VTH(MAX),

TC127_R/S/T/F

MR Pull-up Resistance

Ω

Note

Production testing done at TA = +25°C, over temperature limits ensured by design.

RESET output for TC1270, RESET output for TC1271.

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