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TC1270_07 Datasheet, PDF (2/14 Pages) Microchip Technology – 4-Pin Reset Monitors
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TC1270/TC1271
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..............................................20 mA
Output Current, RESET, Reset...........................20 mA
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.
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. Unless otherwise noted, TA = -40°C to +85°C. Typical values are at TA = +25°C. (Note 1).
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VCC
VCC Range
ICC
Supply Current
VTH
Reset Threshold
Reset Threshold Tempco
1.2
—
5.5
V
—
7
15
µA VCC > VTH, for L/M/R/S/T/F
—
10
15
µA VCC < VTH, for L/M/R/S/T
—
6
12
µA VCC < VTH, for F
4.54
4.63
4.72
4.50
—
4.75
V TC127_L; TA = +25°C
V TA = -40°C to +85°C
4.30
4.38
4.46
4.25
—
4.50
V TC127_M; TA = +25°C
V TA = -40°C to +85°C
3.03
3.08
3.14
3.00
—
3.15
V TC127_T; TA = +25°C
V TA = -40°C to +85°C
2.88
2.93
2.98
2.85
—
3.00
V TC127_S; TA = +25°C
V TA = -40°C to +85°C
2.58
2.63
2.68
2.55
—
2.70
V TC127_R; TA = +25°C
V TA = -40°C to +85°C
1.71
1.75
1.79
1.70
—
1.80
V TC127_F; TA = +25°C
V TA = -40°C to +85°C
—
30
—
ppm/°C
VCC to Reset Delay
—
20
—
µs VCC = VTH to VTH – 125 mV;
—
5
—
L/M/R/S/T/F
tRP
Reset Active Time-out Period
MR Minimum Pulse Width
tMR
MR Glitch Immunity
140
280
560
10
—
—
—
0.1
—
ms VCC = VTH(MAX)
µs
µs
tMD
MR to Reset Propagation Delay
—
0.5
—
µs
VIH
MR Input Threshold
2.3
—
—
V
VCC > VTH(MAX), TC127_L/M
0.7 VCC
—
—
V
VCC > VTH(MAX), TC127_R/S/T/F
VIL
—
—
0.8
V
VCC > VTH(MAX), TC127_L/M
—
— 0.15 VCC
V
VCC > VTH(MAX), TC127_R/S/T/F
MR Pull-up Resistance
10
20
40
kΩ
VOH
Reset Output Voltage High
(TC1271)
0.8 VCC
—
—
V
ISOURCE = 150 µA;
VCC ≤ VTH(MIN)
Note 1: Production testing done at TA = +25°C, over temperature limits ensured by design.
2: RESET output for TC1270, Reset output for TC1271.
DS21381D-page 2
© 2007 Microchip Technology Inc.
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