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Timekeeping, Timers, and Counters

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1-Wire® Devices
MAX6901 MAX6902 MAX6909 MAX6910 MAX6916 MAX6917 MAX6900	Considerations for Maxim Real-Time Clock Crystal Selection
DS1603 DS1371 DS1372 DS1318 DS1374 DS1602 DS1672	DS1371/DS1372/DS1374 32-Bit Binary Counter Time Conversion
DS17485 DS1680 DS1384 DS1338 DS12885 DS1340 DS12R885 DS1283 DS1338 DS1315 DS1339 DS1337 DS1558 DS1305 DS1339 DS1306 DS1678 DS1677 DS14285 DS1393 DS1500 DS1673 DS1672 DS1337 DS1338 DS1685 DS1340 DS1678 DS1689 DS1392 DS1302 DS17885 DS17285 DS1501 DS1284 DS1390 DS1374 DS1371 DS1318 DS1688 DS1670 DS1391 DS1602 DS1307 DS12R885	Crystal Considerations with Dallas Real-Time Clocks (RTCs)
A/D and D/A Conversion/Sampling Circuits
MAX1360 MAX1359 MAX1358	Measuring and Calibrating for Product-Dependent Temperature Offsets
Battery Management
Battery Chargers
ICM7556 MAX713 MAX712	One-Hour Battery Charger Has Switch-Mode PWM Control
Battery Protection
MAX680 MAX8211	Load-Disconnect Switch Consumes Only 8µA
Communications Circuits
DS1007 DS1005 DS1013 DS1020 DS1033 DS1135L DS1021 DS1135 DS1010 DS1040 DS1000 DS1004 DS1035 DS1045 DS1100 DS1100L DS1023 DS1044	Delay Lines Comparison
Digital Potentiometers
DS1855 DS1848 DS1845 DS1859 DS1847	How to Use a PC's Parallel Port to Communicate with 2-Wire Devices
Display Drivers
MAX7221	Multiplexing Shutdown Allows Text to be Displayed
LCD Drivers
MAX7232 MAX7234 MAX7233 MAX7231	Buffering Scheme Drives Large LCDs
General Engineering Topics
DS1855 DS1848 DS1845 DS1859 DS1847	How to Use a PC's Parallel Port to Communicate with 2-Wire Devices
Interface Circuits
Other Interface Circuits
DDS2119M DS2120 DS2125 DS2117M DS2118M	SCSI Bus Configuration For MSTR/SLV Connections
RS232
MAX233 MAX243 MAX247 MAX3232 MAX3238 MAX3248E MAX216 MAX3188 MAX200 MAX225 MAX3203E MAX3110E MAX223 MAX3202E MAX202E MAX3244 MAX3209E MAX3111E MAX232E MAX3222 MAX206 MAX238 MAX3244E MAX222 MAX236 MAX240 MAX3225 MAX3228 MAX3245 MAX208E MAX242 MAX3235E MAX214 MAX249 MAX3246E MAX213E MAX3140 MAX206E MAX239 MAX3229E MAX211E MAX245 MAX3227E MAX	Determining Clock Accuracy Requirements for UART Communications
RS485
MAX233 MAX243 MAX247 MAX3232 MAX3238 MAX3248E MAX216 MAX3188 MAX200 MAX225 MAX3203E MAX3110E MAX223 MAX3202E MAX202E MAX3244 MAX3209E MAX3111E MAX232E MAX3222 MAX206 MAX238 MAX3244E MAX222 MAX236 MAX240 MAX3225 MAX3228 MAX3245 MAX208E MAX242 MAX3235E MAX214 MAX249 MAX3246E MAX213E MAX3140 MAX206E MAX239 MAX3229E MAX211E MAX245 MAX3227E MAX	Determining Clock Accuracy Requirements for UART Communications
Measurement Circuits
DS1044 DS1000 DS1013 DS1007 DS1035 DS1020 DS1021 DS1010 DS1135L DS1135 DS1023 DS1100 DS1033 DS1045 DS1100L DS1005 DS1004	Tech Brief 36: Building a Pulse Width Discriminator Using a Delay Line
Memory
	Addressing the Physical Security of Encryption Keys
DS1642 DS1647 DS1747 DS1643 DS1744 DS1646 DS1742 DS1644 DS1743 DS1746	Using a Nonvolatile Timekeeping RAM with a Microcontroller
DS9034PCX DS174885 DS1689 DS1680 DS1672 DS1558 DS1688 DS1678 DS1670 DS1615 DS1543 DS1500 DS1393 DS1391 DS1384 DS1374 DS1339 DS1337 DS1318 DS1306 DS1302 DS12885 DS1283 DS1251 DS1243 DS1216 DS3800 DS17885 DS17285 DS1685 DS1677 DS1642 DS1486 DS1682 DS1673 DS1616 DS1602 DS1501 DS14285 DS1392 DS1390 DS1386 DS1340 DS1338 DS1315 DS1307 DS1305 DS1	Lithium Coin-Cell Batteries: Predicting an Application Lifetime
Microcontrollers
8051 Drop-In
MAX1407 MAX1401 MAX4455 MAX1402 MAX1403 MAX1414 MAX1409 MAX1408 MAX7652 MAX1400 MAX7651	Specifying Quartz Crystals
DS12R885 DS12C885 DS12R887 DS1685 DS17487 DS12887 DS12885 DS12C887 DS12CR887 DS1687 DS17287 DS17887	Using Multiplexed Bus Clocks with a Microcontroller
DS1371 DS1374	Using the Watchdog/Alarm Counter in the DS1371 and DS1374 Real-Time Clocks
DS89C430 DS5002FP DS87C520 DS80C323 DS89C450 DS5230 DS2250T DS5001FP DS2250 DS5000 DS5250 DS5000FP DS80C310 DS2252T DS2251T DS87C530 DS5000T DS80C320 DS80C400 DS80C390	Using a EconOscillator™ to Clock an 8051 Microprocessor
MAXQ Mixed-Signal
MAXQ2000	Using Timers in the MAXQ Family of Microcontrollers
MAX1407 MAX1401 MAX4455 MAX1402 MAX1403 MAX1414 MAX1409 MAX1408 MAX7652 MAX1400 MAX7651	Specifying Quartz Crystals
Secure
MAX1407 MAX1401 MAX4455 MAX1402 MAX1403 MAX1414 MAX1409 MAX1408 MAX7652 MAX1400 MAX7651	Specifying Quartz Crystals
TINI Networked
MAX1407 MAX1401 MAX4455 MAX1402 MAX1403 MAX1414 MAX1409 MAX1408 MAX7652 MAX1400 MAX7651	Specifying Quartz Crystals
Miscellaneous Circuits
ICM7555 MAX403 MAX406	Proximity Detector Features Ultrasonic Transducers
Oscillators/Delay Lines/Timers/Counters
	Benefits of the DS32X35 Accurate Real-Time Clock with Ferroelectric Random Access Memory (RTC + FRAM)
	Timekeeping Accuracy, Automatic and Affordable
DS1023 DS1045 DS1021 DS1020	Tech Brief 40: Understanding Programmable Delay Lines: Overview of the DS1020, DS1021, DS1023, and DS1045
DS1021 DS1023 DS1020	Tech Brief 38: Using Programmable Delay Lines
DS1021 DS1013 DS1005 DS1023 DS1135 DS1004 DS1020 DS1100	Tech Brief 37: Replacing Passive Hybrid Delay Lines with All-Silicon Delay Lines
DS1044 DS1000 DS1013 DS1007 DS1035 DS1020 DS1021 DS1010 DS1135L DS1135 DS1023 DS1100 DS1033 DS1045 DS1100L DS1005 DS1004	Tech Brief 36: Building a Pulse Width Discriminator Using a Delay Line
DS1000 DS1100	Tech Brief 35: Building a Clock Fail Detector Using a Delay Line
DS1100 DS1135 DS1023 DS1021 DS1040 DS1020	Tech Brief 34: Building Precision Pulse Width Modulators Using Delay Lines
DS1005 DS1023 DS1100 DS1135 DS1005 DS1110 DS1021 DS1010 DS1000 DS1020 DS1013	Silicon Timed Circuits: Frequently Asked Questions
DS1045	Device Characteristics of the DS1045 Dual 4-Bit Programmable Delay Line
DS1007 DS1005 DS1013 DS1020 DS1033 DS1135L DS1021 DS1135 DS1010 DS1040 DS1000 DS1004 DS1035 DS1045 DS1100 DS1100L DS1023 DS1044	Delay Lines Comparison
DS1110 DS1135L DS1110L DS1085 DS1100 DS1135 DS1077	Decoupling Requirements for the DS1077/DS1085 EconOscillators
DS1086	DS1086 Frequency Calculator and Frequency Calculation Algorithm
DS1077L DS1135 DS1110 DS1077 DSD1135 DS1086 DS1023 DS1073 DS1100 DS1085 DS1065	How Delay Lines Work
DS1085	A Programmatic Approach to Calculating DS1085 Programmable-Oscillator Register Values
DS1077	DS1077 5V EconOscillator Architecture and Online Interactive Frequency Calculator
DS1085L DS1085	Frequency Calculator for the DS1085/DS1085L EconOscillator
DS1077L	DS1077L EconOscillator Architecture and Online Interactive Frequency Calculator
DS1077 DS1077L	Using Programmable Oscillators to Generate and Control System Clocks
DS89C430 DS5002FP DS87C520 DS80C323 DS89C450 DS5230 DS2250T DS5001FP DS2250 DS5000 DS5250 DS5000FP DS80C310 DS2252T DS2251T DS87C530 DS5000T DS80C320 DS80C400 DS80C390	Using a EconOscillator™ to Clock an 8051 Microprocessor
DS1021 DS1023 DS1020	DS1020/DS1021 8-Bit Programmable Delay Lines
DS1120 DS1100 DS1121 DS1007 DS1135 DS1110 DS1123	Design Considerations for All-Silicon Delay Lines
Real-Time Clocks
DS3234	Interfacing a DS3234 Extremely Accurate SPI-Bus Real-Time Clock (RTC) to a Motorola Digital Signal Processor (DSP)
DS1388 DS1338 DS1340 DS1339 DS1338 DS1337 DS1307	Using a DS1307 with a PIC Microcontroller
	Benefits of the DS32X35 Accurate Real-Time Clock with Ferroelectric Random Access Memory (RTC + FRAM)
DS1338 DS32x35 DS3234 DS3232 DS3231 DS32KHZ DS1338 DS1339 DS1338 DS1339 DS1501 DS1670 DS1558 DS17885 DS14285 DS1318 DS1393 DS1673 DS12885 DS1315 DS1391 DS1307 DS1678 DS1306 DS1390 DS1685 DS1340 DS1392 DS17485 DS1337 DS1374 DS1302 DS1677 DS1672 DS1500 DS12R885 DS1340 DS1337 DS17285 DS12R885 DS1305	Selecting a Backup Source for Real-Time Clocks
DS12R887 DS12CR887 DS12R885	Calculating ML Cell Life for an RTC Backup Operation
DS17285 DS1693 DS12287 DS12R887 DS12R885 DS12887A DS17487 DS12C887 DS12CR887 DS12C887A DS17887 DS17485 DS14285 DS12885 DS1687 DS1689 DS1691 DS1688 DS17885 DS1685 DS14287 DS12887	Problems and Solutions for Adjusting to Changes in Daylight Saving Time
DS1318	Interfacing the DS1318 with an 8051-type Microcontroller
DS32x35 DS3234 DS3232 DS3231	Power Considerations for Accurate Real-Time Clocks
DS1678	How to Use the DS1678 Real-Time Event Recorder
DS32x35 DS3234 DS3232 DS1339 DS3231 DS1338 DS1374 DS1337 DS1340 DS32KHZ	FAQ About the Integrated-Crystal Package Option
	Timekeeping Accuracy, Automatic and Affordable
	Estimating Super Capacitor Backup Time on Trickle-Charger Real-Time Clocks
DS1392 DS1393 DS1306 DS1305 DS2250	Interfacing a DS1305 RTC with an 8051-Type Microcontroller
DS3231 DS3232 DS32x35	Interfacing a DS3231 with an 8051-Type Microcontroller
DS1388	Interfacing a DS1388 Real-Time Clock with an 8051-Type Microcontroller
DS1302	Interfacing a DS1302 With an 8051-Type Microcontroller
MAX6902	Interfacing a MAX6902 RTC With an 8051-Type Microcontroller
MAX6901	Interfacing a MAX6901 RTC With an 8051-Type Microcontroller
MAX6900	Interfacing a MAX6900 RTC with an 8051-Type Microcontroller
DS1391 DS1390	Interfacing a DS1390/DS1391 RTC with a Motorola DSP with SPI
DS1340 DS1339 DS1307 DS1338 DS1375 DS1337	Interfacing I²C Serial Real-Time Clocks to a Microcontroller
DS1391 DS1390 DS1305 DS1306	Interfacing an SPI RTC with a Motorola DSP
DS1318	Accessing the DS1318 Clock Registers
DS1390 DS1391 DS1305 DS1389 DS1306	Interfacing an SPI-Interface RTC with a PIC Microcontroller
DS1340	Calibrating the DS1340 Real-Time Clock
DS14287 DS12R887 DS14285 DS12885 DS1685 DS12CR887 DS1688 DS12887A DS17485 DS12C887 DS17887 DS1691 DS17885 DS17287 DS12R885 DS17285 DS12887 DS17487 DS12C887A DS1693 DS2250 DS1689 DS1687	Interface a Multiplexed-Bus Real-Time Clock to a µP With Separate Address and Data Buses
DS12R885 DS1284 DS1384 DS1307 DS1677 DS1305 DS1338 DS1340 DS1315 DS1390 DS1392 DS1602 DS1616 DS1501 DS1670 DS1685 DS1680 DS17885 DS17285 DS32KHZ DS12885 DS1283 DS14285 DS1302 DS1337 DS1672 DS1306 DS1339 DS1374 DS1371 DS1391 DS1393 DS1615 DS1500 DS1558 DS1673 DS1689 DS1678 DS1688 DS17485	Using the DS32kHz with Dallas Real-Time Clocks
MAX6902 MAX6900 MAX6909 MAX6901 MAX6910	Evaluating the Accuracy of Maxim Real-Time Clocks (RTCs)
MAX6901	Using Maxim RTCs with 3-Wire Interface
MAX6901 MAX6902 MAX6909 MAX6910 MAX6900	Interpreting Real-Time-Clock Registers
MAX6909 MAX6900 MAX6902 MAX6910 MAX6901	Real-Time-Clock Selection and Optimization
MAX6901 MAX6902 MAX6909 MAX6910 MAX6916 MAX6917 MAX6900	Considerations for Maxim Real-Time Clock Crystal Selection
DS12C887 DS12887 DS12C885 DS12885	Tech Brief 8: Problems and Solutions for the Year 2000
DS12885 DS12C887A DS12C887 DS12887 DS1687 DS12887A DS1685	Replacement for the MC146818A
DS12885 DS12887A DS12C887A DS12C887 DS12887	Replacement for the MC146818
DS1642 DS1647 DS1747 DS1643 DS1744 DS1646 DS1742 DS1644 DS1743 DS1746	Using a Nonvolatile Timekeeping RAM with a Microcontroller
DS1603 DS1371 DS1372 DS1318 DS1374 DS1602 DS1672	DS1371/DS1372/DS1374 32-Bit Binary Counter Time Conversion
DS12R885 DS12C885 DS12R887 DS1685 DS17487 DS12887 DS12885 DS12C887 DS12CR887 DS1687 DS17287 DS17887	Using Multiplexed Bus Clocks with a Microcontroller
DS1371 DS1374	Using the Watchdog/Alarm Counter in the DS1371 and DS1374 Real-Time Clocks
DS1374 DS1371 DS1672	Using the DS1672 Low-Voltage Serial Timekeeping IC
DS1315 DS1216 DS1243 DS1244 DS1248 DS1251 DS1254	Using the SmartWatch/Phantom Clocks with a Microcontroller
DS1501 DS1511	Using the Power-Control Functions of the DS1501/DS1511 Real-Time Clock
DS1647 DS1646 DS1554 DS1743 DS1556 DS1556 DS1386 DS1486 DS1746 DS1747 DS1746 DS1248 DS1743 DS1644 DS1553 DS1557 DS1244 DS1744 DS1554 DS1643 DS1643 DS1553 DS1251 DS9034PCX DS1646	PowerCap Package Allows for Density Upgrades, Surface Mount Assembly
DS9034PCX DS174885 DS1689 DS1680 DS1672 DS1558 DS1688 DS1678 DS1670 DS1615 DS1543 DS1500 DS1393 DS1391 DS1384 DS1374 DS1339 DS1337 DS1318 DS1306 DS1302 DS12885 DS1283 DS1251 DS1243 DS1216 DS3800 DS17885 DS17285 DS1685 DS1677 DS1642 DS1486 DS1682 DS1673 DS1616 DS1602 DS1501 DS14285 DS1392 DS1390 DS1386 DS1340 DS1338 DS1315 DS1307 DS1305 DS1	Lithium Coin-Cell Batteries: Predicting an Application Lifetime
DS1644 DS1688 DS1543 DS1747 DS1689 DS1678 DS1486 DS14285 DS1672 DS1393 DS1248 DS1677 DS1501 DS1306 DS1511 DS1337 DS14287 DS1391 DS1670 DS1647 DS1615 DS1386 DS12885 DS1742 DS1642 DS1251 DS1384 DS1691 DS17485 DS1728 DS1392 DS1643 DS1243 DS1616 DS1339 DS1302 DS1340 DS1390 DS1554 DS1646 DS1305 DS1254 DS1307 DS1746 DS1680 DS1244 DS12R885 DS1748	Design Considerations for Dallas Semiconductor Real-Time Clocks
DS12C887 DS12887 DS12C887A DS12887A	Replacing the DS1287/DS12887 Real-Time Clock in a Personal Computer
MAX6902 DS3234 DS1390 DS1391 DS1305 DS1306 MAX6916	Interfacing SPI Real-Time Clocks (RTCs) with a Microcontroller
DS1687 DS1689 DS17487 DS17887 DS1693 DS17285 DS1691 DS1688 DS17287 DS17885 DS1685 DS17485 DS14285 DS14287	Using the Multiplex Bus RTC Extended Features
DS1302 DS1202	Replacing the DS1202 with the DS1302
DS1677 DS1670 DS1680 DS1673	DS1670 Portable System Controller
DS1339 DS1307 DS1340	Interfacing the DS1307 with an 8051-Compatible Microcontroller
	Using the Dallas Tricklecharge Timekeeper
DS17885 DS1685 DS17485	DS1685/87 and DS17X85/87 Accessing Extended User RAM
DS1286 DS1486 DS1511 DS1284 DS1283 DS1384 DS1386 DS1501 DS1500	Watchdog Timekeeper
DS17485 DS1680 DS1384 DS1338 DS12885 DS1340 DS12R885 DS1283 DS1338 DS1315 DS1339 DS1337 DS1558 DS1305 DS1339 DS1306 DS1678 DS1677 DS14285 DS1393 DS1500 DS1673 DS1672 DS1337 DS1338 DS1685 DS1340 DS1678 DS1689 DS1392 DS1302 DS17885 DS17285 DS1501 DS1284 DS1390 DS1374 DS1371 DS1318 DS1688 DS1670 DS1391 DS1602 DS1307 DS12R885	Crystal Considerations with Dallas Real-Time Clocks (RTCs)
DS1248P DS1216 DS1243Y DS1254 DS1216E DS1243 DS1244P DS1251P DS1216F DS1315	Using the Dallas Phantom Real-Time Clocks (RTCs)
DS1602 DS1603	Recording Power Cycling Information Using the DS1602/DS1603
Signal Generation Circuits
DS1077L DS1135 DS1110 DS1077 DSD1135 DS1086 DS1023 DS1073 DS1100 DS1085 DS1065	How Delay Lines Work
Temperature Sensors and Thermal Management
MAX1360 MAX1359 MAX1358	Measuring and Calibrating for Product-Dependent Temperature Offsets
	Addressing the Physical Security of Encryption Keys
	Timekeeping Accuracy, Automatic and Affordable
Time and Temperature Recorders
	Benefits of the DS32X35 Accurate Real-Time Clock with Ferroelectric Random Access Memory (RTC + FRAM)
DS1678	How to Use the DS1678 Real-Time Event Recorder
MAX7221 MAX1298	12-Bit Thermometer Using an 8-Bit µC and Assembler
DS12R885 DS1284 DS1384 DS1307 DS1677 DS1305 DS1338 DS1340 DS1315 DS1390 DS1392 DS1602 DS1616 DS1501 DS1670 DS1685 DS1680 DS17885 DS17285 DS32KHZ DS12885 DS1283 DS14285 DS1302 DS1337 DS1672 DS1306 DS1339 DS1374 DS1371 DS1391 DS1393 DS1615 DS1500 DS1558 DS1673 DS1689 DS1678 DS1688 DS17485	Using the DS32kHz with Dallas Real-Time Clocks
DS1682	Recording Total On-Time and Power Cycling Information Using the DS1682
DS9034PCX DS174885 DS1689 DS1680 DS1672 DS1558 DS1688 DS1678 DS1670 DS1615 DS1543 DS1500 DS1393 DS1391 DS1384 DS1374 DS1339 DS1337 DS1318 DS1306 DS1302 DS12885 DS1283 DS1251 DS1243 DS1216 DS3800 DS17885 DS17285 DS1685 DS1677 DS1642 DS1486 DS1682 DS1673 DS1616 DS1602 DS1501 DS14285 DS1392 DS1390 DS1386 DS1340 DS1338 DS1315 DS1307 DS1305 DS1	Lithium Coin-Cell Batteries: Predicting an Application Lifetime
DS1644 DS1688 DS1543 DS1747 DS1689 DS1678 DS1486 DS14285 DS1672 DS1393 DS1248 DS1677 DS1501 DS1306 DS1511 DS1337 DS14287 DS1391 DS1670 DS1647 DS1615 DS1386 DS12885 DS1742 DS1642 DS1251 DS1384 DS1691 DS17485 DS1728 DS1392 DS1643 DS1243 DS1616 DS1339 DS1302 DS1340 DS1390 DS1554 DS1646 DS1305 DS1254 DS1307 DS1746 DS1680 DS1244 DS12R885 DS1748	Design Considerations for Dallas Semiconductor Real-Time Clocks
DS17485 DS1680 DS1384 DS1338 DS12885 DS1340 DS12R885 DS1283 DS1338 DS1315 DS1339 DS1337 DS1558 DS1305 DS1339 DS1306 DS1678 DS1677 DS14285 DS1393 DS1500 DS1673 DS1672 DS1337 DS1338 DS1685 DS1340 DS1678 DS1689 DS1392 DS1302 DS17885 DS17285 DS1501 DS1284 DS1390 DS1374 DS1371 DS1318 DS1688 DS1670 DS1391 DS1602 DS1307 DS12R885	Crystal Considerations with Dallas Real-Time Clocks (RTCs)
UARTs
MAX233 MAX243 MAX247 MAX3232 MAX3238 MAX3248E MAX216 MAX3188 MAX200 MAX225 MAX3203E MAX3110E MAX223 MAX3202E MAX202E MAX3244 MAX3209E MAX3111E MAX232E MAX3222 MAX206 MAX238 MAX3244E MAX222 MAX236 MAX240 MAX3225 MAX3228 MAX3245 MAX208E MAX242 MAX3235E MAX214 MAX249 MAX3246E MAX213E MAX3140 MAX206E MAX239 MAX3229E MAX211E MAX245 MAX3227E MAX	Determining Clock Accuracy Requirements for UART Communications