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TC1270 Datasheet, PDF (2/12 Pages) Microchip Technology – 4-Pin μP 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...............................................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
ICC
VTH
tRP
tMR
tMD
VIH
VIL
VIH
VIL
Note
VCC Range
Supply Current
Reset Threshold
Reset Threshold Tempco
1.2
—
5.5
V
—
7
15
µA VCC > VTH, for L/M/R/S/T/F
—
10
15
VCC < VTH, for L/M/R/S/T
—
6
12
VCC < VTH, for F
4.54
4.63
4.72
4.50
—
4.75
4.30
4.38
4.46
4.25
—
4.50
3.03
3.08
3.14
3.00
—
3.15
2.88
2.93
2.98
2.85
—
3.00
2.58
2.63
2.68
2.55
—
2.70
1.71
1.75
1.79
1.70
—
1.80
V 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
—
30
— ppm/°C
VCC to Reset Delay
—
20
—
µsec VCC = VTH to VTH – 125mV; L/M/R/S/T/F
—
5
—
Reset Active Timeout Period
MR Minimum Pulse Width
140
280
560
msec VCC = VTH(MAX)
10
—
—
µsec
MR Glitch Immunity
—
0.1
—
µsec
MR to Reset Propagation Delay
—
0.5
—
µsec
MR Input Threshold
2.3
—
—
V
VCC > VTH(MAX),
—
—
0.8
TC127_L/M
MR Pull-up Resistance
0.7 VCC
—
10
—
—
V
VCC > VTH(MAX),
— 0.15 VCC
TC127_R/S/T/F
20
40
kΩ
1: Production testing done at TA = +25°C, over temperature limits ensured by design.
2: RESET output for TC1270, RESET output for TC1271.
DS21381B-page 2
© 2002 Microchip Technology Inc.
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