TC1270A/70AN/71A
Voltage Supervisor with Manual Reset Input
Features:
• Precision Voltage Monitor
- 2.63V, 2.93V, 3.08V, 4.38V and 4.63V Trip
Points (Typical)
• Manual Reset Input
• Reset Time-Out Delay:
- Standard: 280 ms (Typical)
- Optional: 2.19 ms, and 35 ms (Typical)
• Power Consumption
15 µA max
• No glitches on outputs during power-up
• Active Low Output Options:
- Push-Pull Output and Open-Drain Output
• Active High Output Option:
- Push-Pull Output
• Replacement for (Specification compatible with):
- TC1270, TC1271
- TCM811, TCM812
• Fully Static Design
• Low-Voltage Operation (1.0V)
• ESD Protection:
-
4 kV Human Body Model (HBM)
-
400V Machine Model (MM)
• Extended (E) Temperature Range:
-40°C to +125°C
• Package Options:
- 4-Lead SOT-143
- 5-Lead SOT-23
- Pb-free Device
Package Types
SOT-143
TC1270A
TC1270AN
TC1270A
TC1270AN
V
SS
1
4
V
DD
V
SS
SOT-143
1
4
V
DD
TC1271A
RST
2
3
MR
RST
2
3
MR
SOT-23-5
NC
V
DD
MR
1
2
3
5
V
SS
NC
V
DD
4
RST
MR
SOT-23-5
1
2
3
5
V
SS
TC1271A
4
RST
Functional Block Diagram
V
DD
Voltage
Detector
Circuitry
Reset
Generator
and Delay
Timer
(2.19 ms,
35 ms,
280 ms)
PP
PP
OD
Output
Driver
Packages
Comment
SOT-143
(2)
, Replaces TC1270 and
SOT-23-5
TCM811
SOT-143
(2)
, Replaces TC1271 and
SOT-23-5
TCM812
DS22035D-page 1
RST
(TC1271A)
RST
(TC1270A)
RST
(TC1270AN)
18.5 k
MR
Glitch Filter
Device Features
Temperature
Range
Reset Delay
(ms) (Typ)
(3)
Output
Device
Type
Active
Level
Reset Trip
Point (V)
(3)
Voltage
Range (V)
TC1270A
Push-Pull
Low
2.19, 35,
280
(1)
4.63, 4.38,
1.0V to
3.08, 2.93,
5.5V
2.63
(4)
TC1270AN Open-Drain Low
TC1271A
Note 1:
2:
3:
4:
Push-Pull
High
-40°C to SOT-143
(2)
, New Option
+125°C SOT-23-5
The 280 ms Reset delay time-out is compatible with the TC1270, TC1271, TCM811 and TCM812 devices.
The SOT-143 package is compatible with the TC1270, TC1271, TCM811 and TCM812 devices.
Custom Reset trip points and Reset delays available, contact your local Microchip sales office.
The TC1270/1 and TCM811/12 1.75V trip point option is not supported.
2007-2011 Microchip Technology Inc.
TC1270A/70AN/71A
NOTES:
DS22035D-page 2
2007-2011 Microchip Technology Inc.
TC1270A/70AN/71A
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (V
DD
to V
SS
) ............................... +7.0V
Input Current, V
DD
.............................................. 10 mA
Output Current, RESET, Reset .......................... 10 mA
Voltage on all inputs and outputs
w.r.t. V
SS
............................ -0.6V to (V
DD
+ 1.0V)
Storage Temperature Range.............. -65°C to +150°C
Operating Temperature Range .......... -40°C to +125°C
Maximum Junction Temperature, T
S
.................. 150°C
ESD protection on all pins
Human Body Model
4 kV
Machine Model
400V
† Notice:
Stresses above those listed under
“Absolute
Maximum Ratings” may cause permanent damage to a
device. The absolute maximum values are merely
stress ratings – functional operation of a device at
those, or any other conditions above those indicated in
the operational listing of these specifications, is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
ELECTRICAL CHARACTERISTICS
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
Operating Voltage Range
Supply Current
Sym
V
DD
I
DD
Min
1.0
—
—
—
Reset Trip Point
Threshold
(3)
V
TRIP
4.54
4.50
4.30
4.25
3.03
3.00
2.88
2.85
2.72
2.70
2.58
2.55
Note 1:
2:
3:
4:
5:
6:
Typ
(1)
—
7
4.75
10
4.63
—
4.38
—
3.08
—
2.93
—
2.77
—
2.63
—
Max
5.5
15
10
15
4.72
4.75
4.46
4.50
3.14
3.15
2.98
3.00
2.82
2.85
2.68
2.70
Units
V
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V
TC127xA:
(5)
V
DD
> V
TRIP
, for L/M/R/S/T,
V
DD
= 5.5V
V
DD
> V
TRIP
, for R/S/T, V
DD
= 3.6V
V
DD
< V
TRIP
, for L/M/R/S/T
TC127xAL: T
A
= +25°C
T
A
= –40°C to +125°C
TC127xAM: T
A
= +25°C
T
A
= –40°C to +125°C
TC127xAT: T
A
= +25°C
T
A
= –40°C to +125°C
TC127xAS: T
A
= +25°C
T
A
= –40°C to +125°C
T
A
= +25°C
T
A
= –40°C to +125°C
TC127xAR: T
A
= +25°C
T
A
= –40°C to +125°C
Test Conditions
Data in the Typical (“Typ”) column is at 5V, +25C, unless otherwise stated.
RST output for TC1270A and TC1270AN, RST output for TC1271A.
TC127XA refers to the TC1270A, TC1270AN or TC1271A device.
Hysteresis is within the V
TRIP(MIN)
to V
TRIP(MAX)
window.
Custom-ordered voltage trip point. Minimum order volume requirement.
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.
2007-2011 Microchip Technology Inc.
DS22035D-page 3
TC1270A/70AN/71A
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
Reset Threshold Tempco
Reset Trip Point
Hysteresis
(1)
MR Input High Threshold
MR Input Low Threshold
MR Pull-up Resistance
Open-Drain High Voltage
on Output
V
ODH
V
HYS
V
IH
V
IL
Sym
Min
—
—
2.3
0.7 V
DD
—
—
10
—
Typ
(1)
±30
0.3
—
—
—
—
18.5
—
Max
—
—
—
—
0.8
0.25 V
DD
40
13.5
Units
ppm/°C
%
V
V
V
V
k
V
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
(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.
Percentage of V
TRIP
Voltage
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
Test Conditions
Reset
Output
Voltage
Low
(2)
TC1270A/
TC1270AN
TC1271A
TC1270A/
TC1270AN
TC1271A
TC1270A/
TC1270AN
V
OL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.3
0.3
0.4
0.3
0.3
—
—
—
±1
1
50
V
V
V
V
V
V
V
V
µA
µA
pF
Reset
Output
Voltage
High
(2)
TC1270A
TC1270A
TC1271A
V
OH
0.8 V
DD
V
DD
- 1.5
0.8 V
DD
Input Leakage Current
Open-Drain RST Output
Leakage
Capacitive Loading
Specification on Output
Pins
Note 1:
2:
3:
4:
5:
6:
I
IL
I
OLOD
C
IO
—
—
—
Data in the Typical (“Typ”) column is at 5V, +25C, unless otherwise stated.
RST output for TC1270A and TC1270AN, RST output for TC1271A.
TC127XA refers to the TC1270A, TC1270AN or TC1271A device.
Hysteresis is within the V
TRIP(MIN)
to V
TRIP(MAX)
window.
Custom-ordered voltage trip point. Minimum order volume requirement.
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.
DS22035D-page 4
2007-2011 Microchip Technology Inc.
TC1270A/70AN/71A
1.1
1.1.1
AC CHARACTERISTICS
TIMING PARAMETER SYMBOLOGY
The timing parameter symbols have been created
following one of the following formats:
1. TppS2ppS
T
F
Frequency
E
Error
Lowercase letters (pp) and their meanings:
pp
io
Input or Output pin
rx
Receive
bitclk
RX/TX BITCLK
drt
Device Reset Timer
Uppercase letters and their meanings:
S
F
H
I
L
Fall
High
Invalid (High-impedance)
Low
P
R
V
Z
Period
Rise
Valid
High-impedance
2. TppS
T
Time
osc
tx
RST
Oscillator
Transmit
Reset
Pin
V
SS
C
L
= 50 pF
FIGURE 1-1:
Test Load Conditions.
2007-2011 Microchip Technology Inc.
DS22035D-page 5
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