TCM810 Microchip Technology Inc., TCM810 Datasheet

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TCM810

Manufacturer Part Number
TCM810
Description
3-pin Microcontroller Reset Monitors
Manufacturer
Microchip Technology Inc.
Datasheet

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Features
• Precision V
• 140 msec Minimum RESET Time-Out Period
• RESET Output to V
• Low Supply Current, 9 µA (typ.)
• V
• Small 3-Pin SC-70 and SOT-23B Packages
• No External Components
• Push-Pull RESET Output
• Temperature Ranges:
Applications
• Computers
• Embedded Systems
• Battery-powered Equipment
• Critical Microcontroller Power Supply Monitoring
• Automotive
Typical Application Circuit
© 2005 Microchip Technology Inc.
V
Nominal System Voltage Supplies
- Industrial: SC-70 (E): -40 C to +85 C
- Extended: SOT-23, SC-70 (V): -40 C to +125 C
DD
DD
Transient Immunity
DD
TCM809
Monitor for 2.5V, 3.0V, 3.3V, 5.0V
GND
V
RESET
DD
3
DD
1
3-Pin Microcontroller Reset Monitors
= 1.0V (TCM809)
2
Microcontroller
RESET
INPUT
(Active-Low)
PICmicro
GND
V
DD
TCM809/TCM810
®
General Description
The TCM809 and TCM810 are cost-effective system
supervisor circuits designed to monitor V
systems; providing a reset signal to the host processor,
when necessary. No external components are
required.
The RESET output is typically driven active within
65 µsec of V
old. RESET is maintained active for a minimum of
140 msec after V
The TCM810 has an active-high RESET output, while
the TCM809 has an active-low RESET output. The
output of the TCM809/TCM810 is valid down to
V
and SOT-23B packages.
The TCM809/TCM810 are optimized to reject fast
transient glitches on the V
of 9 µA (typ., V
for battery-powered applications.
Pin Configurations
SOT-23B/SC-70
DD
Note: 3-Pin SOT-23B is equivalent to
= 1V. Both devices are available in 3-Pin SC-70
TCM810 (RESET)
TCM809 RESET
JEDEC TO-236.
DD
DD
falling through the reset voltage thresh-
DD
= 3.3V) make these devices suitable
GND 1
rises above the reset threshold.
2
DD
line. A low supply current
DS21661D-page 1
DD
3
in digital
V
DD

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TCM810 Summary of contents

Page 1

... V old. RESET is maintained active for a minimum of 140 msec after V The TCM810 has an active-high RESET output, while the TCM809 has an active-low RESET output. The output of the TCM809/TCM810 is valid down 1V. Both devices are available in 3-Pin SC-70 DD and SOT-23B packages. The TCM809/TCM810 are optimized to reject fast transient glitches on the µ ...

Page 2

... High (TCM810) Note 1: Production testing done +25°C, overtemperature limits ensured by QC screen RESET output for TCM809, RESET output for TCM810. DS21661D-page 2 † Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied ...

Page 3

... Supply Current vs. Temperature. 16 TCM8xx/L/M/J, No Load -40 - Temperature (°C) FIGURE 2-2: Supply Current vs. Temperature. © 2005 Microchip Technology Inc. TCM809/TCM810 450 = 5V DD 400 350 300 250 200 150 100 50 80 100 120 0 -40 -20 FIGURE 2-3: vs. Temperature. ...

Page 4

... PIN DESCRIPTIONS The descriptions of the pins are given in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE NAME FUNCTION GND Ground RESET (TCM809) RESET push-pull output RESET (TCM810) RESET push-pull output V Supply voltage (+2.5V, +3.0V, DD +3.3V, +5.0V). 3.1 Ground (GND) Ground terminal. 3.2 RESET Output (TCM809) The RESET push-pull output remains low while V below the reset voltage threshold, and for 240 msec (140 msec min ...

Page 5

... This resistor value, though not critical, should be chosen such that it does not appreciably load RESET under normal operation (100 k applications). Similarly, a pull-up resistor to V required for the TCM810 to ensure a valid high RESET for V below 1.0V. DD TCM809 ...

Page 6

... This can be avoided by adding a 4.7 k resistor in series with the output of the TCM809/ TCM810 (Figure 4-3). If there are other components in the system that require a reset signal, they should be buffered so as not to load the reset line. If the other ...

Page 7

... TCM8xxT ENB J3 VNB JX TCM8xxS ENB J4 VNB JV TCM8xxR ENB J5 VNB JU TCM8xxJ ENB J6 VNB JT TCM8xxZ ENB J7 Example: Customer Specific Information Codes for: TCM8xx = Part Number TCM809 TCM810 TCM8xxL ELB J1 VLB JZ TCM8xxM ELB J2 VLB JY TCM8xxT ELB J3 VLB JX TCM8xxS ELB J4 VLB JV TCM8xxR ELB J5 VLB JU TCM8xxJ ...

Page 8

... TCM809/TCM810 3-Lead Plastic Small Outline Transistor (NB) (SOT-23 Dimension Limits Number of Pins Pitch Outside lead pitch (basic) Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...

Page 9

... Mold Draft Angle Top Mold Draft Angle Bottom *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .005" (0.127mm) per side. JEITA (EIAJ) Equivalent: SC70 Drawing No. C04-104 © 2005 Microchip Technology Inc. TCM809/TCM810 ...

Page 10

... TCM809/TCM810 5.2 Product Tape and Reel Specifications FIGURE 5-1: EMBOSSED CARRIER DIMENSIONS (8, 12, 16 AND 24 MM TAPE ONLY) Top Cover Tape K 0 TABLE 1: CARRIER TAPE/CAVITY DIMENSIONS Case Package Outline Type NB SOT- SC-70 3L FIGURE 5-2: 3-LEAD SOT-23/SC70 DEVICE TAPE AND REEL SPECIFICATIONS Device Marking Pin 1 ...

Page 11

... Updated 6.0 “Packaging Information” to include old and new packaging examples. • Applied new template and rearranged sections to be consistent with current documentation. Revision C (April 2004) Revision B (January 2002) Revision A (May 2001) Initial release of data sheet. © 2005 Microchip Technology Inc. TCM809/TCM810 DS21661D-page 11 ...

Page 12

... TCM809/TCM810 NOTES: DS21661D-page 12 © 2005 Microchip Technology Inc. ...

Page 13

... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO Device V Temperature DD Range Reset Threshold Device: TCM809: Supervisor circuit with active-low RESET output TCM810: Supervisor circuit with active-high RESET output V Reset Threshold 4.63V 4.38V J = 4.00V T = 3.08V S = 2.93V ...

Page 14

... TCM809/TCM810 NOTES: DS21661D-page 14 © 2005 Microchip Technology Inc. ...

Page 15

... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2005 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...

Page 16

... Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 © 2005 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4450-2828 Fax: 45-4485-2829 France - Massy ...

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