TC1270AMAVRCTR datasheet(3/42 Pages) MICROCHIP

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DS20002035F-page 3

TC1270A/70AN/71A

Reset Threshold Tempco

—

±30

—

ppm/°C

Reset Trip Point

Hysteresis (1)

VHYS

—

0.3

—

Percentage of VTRIP Voltage

MR Input High Threshold

VIH

2.3

—

VDD > VTRIP(MAX), L/M only

0.7 VDD

——

VDD > VTRIP(MAX), R/S/T only

MR Input Low Threshold

VIL

——

0.8

VDD > VTRIP(MAX), L/M only

—

0.25 VDD

VVDD > VTRIP(MAX), R/S/T only

MR Pull-up Resistance

18.5



Open-Drain High Voltage

on Output

VODH

—

13.5

Open-Drain Output pin only.

VDD = 3.0V, Time voltage > 5.5

applied

 100s. Current into pin

limited to 2 mA +25°C operation

recommended (6)

Reset

Output

Voltage

Low (2)

TC1270A/

TC1270AN

VOL

—

0.3

R/S/T only,

ISINK = 1.2 mA, VDD = VTRIP(MIN)

TC1271A

—

0.3

R/S/T only,

ISINK = 1.2 mA, VDD = VTRIP(MAX)

TC1270A/

TC1270AN

—

0.4

L/M only,

ISINK = 3.2 mA, VDD = VTRIP(MIN)

TC1271A

—

0.3

L/M only,

ISINK = 3.2 mA, VDD = VTRIP(MAX)

TC1270A/

TC1270AN

—

0.3

L/M only,

ISINK = 50 µA, VDD > 1.0V

Reset

Output

Voltage

High (2)

TC1270A

VOH

0.8 VDD

—

R/S/T only,

ISOURCE = 500 µA, VDD = VTRIP(MAX)

TC1270A

VDD - 1.5

—

L/M only,

ISOURCE = 800 µA, VDD = VTRIP(MAX)

TC1271A

0.8 V

——

ISOURCE = 500 µA, VDD  VTRIP(MIN)

Input Leakage Current

IIL

——

±1

µA

VPIN = VDD

Open-Drain RST Output

Leakage

IOLOD

—

µA

Open-Drain configuration only.

Capacitive Loading

Specification on Output

Pins

CIO

—

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Characteristics: Unless otherwise noted, VDD = 5V for L/M versions, VDD = 3.3V for T/S versions,

VDD = 3V for R version, TA = –40°C to +125°C. Typical values are at TA = +25°C.

Parameter

Sym.

Min.

Typ.(1)

Max.

Units

Test Conditions

Note 1: Data in the Typical (“Typ.”) column is at 5V, +25

C, unless otherwise stated.

2: RST output for TC1270A and TC1270AN, RST output for TC1271A.

3: TC127XA refers to the TC1270A, TC1270AN or TC1271A device.

4: Hysteresis is within the VTRIP(MIN) to VTRIP(MAX) window.

5: Custom-ordered voltage trip point. Minimum order volume requirement.

6: This specification allows this device to be used in PIC® microcontroller applications that require the

In-Circuit Serial Programming™ (ICSP™) feature (see device-specific programming specifications for

voltage requirements). The total time that the RST pin can be above the maximum device operational

voltage (5.5V) is 100s. Current into the RST pin should be limited to 2 mA. It is recommended that the

device operational temperature be maintained between 0°C to +70°C (+25°C preferred). For additional

information, refer to Figure 2-41.

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