2007 Microchip Technology Inc.
DS22035B-page 3
TC1270A/70AN/71A
Reset Threshold Tempco
Reset Trip Point
Hysteresis
(4)
MR Input High Threshold
—
—
±30
0.3
—
—
ppm/°C
%
V
HYS
Percentage of V
TRIP
Voltage
V
IH
2.3
—
—
—
—
18.5
—
—
—
0.8
V
V
V
V
k
Ω
V
V
DD
> V
TRIP(MAX)
, L/M only
V
DD
> V
TRIP(MAX)
, R/S/T only
V
DD
> V
TRIP(MAX)
, L/M only
V
DD
> V
TRIP(MAX)
, R/S/T only
0.7 V
DD
—
—
10
—
MR Input Low Threshold
V
IL
0.25 V
DD
40
13.5
MR Pull-up Resistance
Open-Drain High Voltage
on Output
V
ODH
Open-Drain Output pin only.
V
DD
= 3.0V, Time voltage > 5.5
applied
≤
100s. Current into pin
limited to 2 mA +25°C operation
recommended
(Note 6)
R/S/T only,
I
SINK
= 1.2 mA, V
DD
= V
TRIP(MIN)
R/S/T only,
I
SINK
= 1.2 mA, V
DD
= V
TRIP(MAX)
L/M only,
I
SINK
= 3.2 mA, V
DD
= V
TRIP(MIN)
L/M only,
I
SINK
= 3.2 mA, V
DD
= V
TRIP(MAX)
L/M only,
I
SINK
= 50 μA, V
DD
> 1.0V
R/S/T only,
I
SOURCE
= 500 μA, V
DD
= V
TRIP(MAX)
L/M only,
I
SOURCE
= 800 μA, V
DD
= V
TRIP(MAX)
I
SOURCE
= 500 μA, V
DD
≤
V
TRIP(MIN)
V
PIN
= V
DD
Open-Drain configuration only.
Reset
Output
Voltage
Low
(2)
TC1270A/
TC1270AN
TC1271A
V
OL
—
—
0.3
V
—
—
0.3
V
TC1270A/
TC1270AN
TC1271A
—
—
0.4
V
—
—
0.3
V
TC1270A/
TC1270AN
TC1270A
—
—
0.3
V
Reset
Output
Voltage
High
(2)
V
OH
0.8 V
DD
—
—
V
TC1270A
V
DD
- 1.5
—
—
V
TC1271A
0.8 V
DD
—
—
—
—
—
—
±1
1
V
μA
μA
Input Leakage Current
Open-Drain RST Output
Leakage
Capacitive Loading
Specification on Output
Pins
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 either the TC1270A, TC1270AN or TC1271A device.
4:
Hysteresis is within the V
TRIP(MIN)
to V
TRIP(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
.
I
IL
I
OLOD
C
IO
—
—
50
pF
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics:
Unless otherwise noted, V
DD
= 5V for L/M versions, V
DD
= 3.3V for T/S versions,
V
DD
= 3V for R version, T
A
= -40°C to +125°C. Typical values are at T
A
= +25°C.
Parameter
Sym
Min
Typ
(1)
Max
Units
Test Conditions