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ICM7249

Intersil Corporation
Part Number ICM7249
Manufacturer Intersil Corporation
Description Micro-Power Event/Hour Meter
Published May 10, 2007
Detailed Description ICM7249 August 1997 5 1/2 Digit LCD, Micro-Power Event/Hour Meter Description The ICM7249 Timer/Counter is intended for...
Datasheet PDF File ICM7249 PDF File

ICM7249
ICM7249

Overview
ICM7249 August 1997 5 1/2 Digit LCD, Micro-Power Event/Hour Meter Description The ICM7249 Timer/Counter is intended for long-term battery-supported industrial applications.
The ICM7249 typically draws 1µA during active timing or counting, due to Intersil’ special low-power design techniques.
This allows more than 10 years of continuous operation without battery replacement.
The chip offers four timing modes, eight counting modes and four test modes.
The ICM7249 is a 48 lead device, powered by a single DC voltage source and controlled by a 32.
768kHz quartz crystal.
No other external components are required.
Inputs to the chip are TTL-compatible and outputs drive standard direct drive LCD segments.
Features • Hour Meter Requires Only 4 Parts Total • Micropower Operation: < 1µA at 2.
8V (Typ) • 10 Year Operation On One Lithium Cell.
21/2 Year Battery Life with Display Connected • Directly Drives 51/2 Digit LCD • 14 Programmable Modes of Operation • Times Hrs.
, 0.
1 Hrs.
, 0.
01 Hrs.
, 0.
1 Mins.
• Counts 1’s, 10’s, 100’s, 1000’s • Dual Function Input Circuit - Selectable Debounce for Counter - High-Pass Filter for Timer • Direct AC Line Triggering with Input Resistor • Winking “Timer Active” Display Output • Display Test Feature Pinout ICM7249 (PDIP) TOP VIEW b6/c6 f5 g5 e5 d5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 DT 47 S/S 46 C3 45 C2 44 C1 43 C0 42 GND 41 OSC OUTPUT 40 OSC INPUT 39 VDD 38 BP 37 W 36 a1 35 b1 34 c1 33 d1 32 e1 31 g1 30 f1 29 a2 28 b2 27 c2 26 d2 25 e2 Applications • AC or DC Hour Meters • AC or DC Totalizers • Portable Battery Powered Equipment • Long Range Service Meters c5 b5 a5 Ordering Information PART NUMBER ICM7249IPM TEMP.
RANGE (oC) -20 to 85 PACKAGE 48 Ld PDIP PKG.
NO.
E48.
6 f4 g4 e4 d4 c4 b4 a4 f3 g3 e3 d3 c3 b3 a3 f2 g2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.
intersil.
com or 407-727-9207 | Copyright © Intersil Corporation 1999 File Numbe...


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