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MC146818 Datasheet

Part Manufacturer Description PDF Type
MC146818 Motorola REAL-TIME CLOCK PLUS RAM(RTC) Original
MC146818A Motorola REAL-TIME CLOCK PLUS RAM(RTC) Original
MC146818A Motorola Real-Time Clock Plus RAM(RTC) Original
MC146818A Motorola Single-Chip Microcontrollers (AMCU) Original
MC146818A Motorola European Master Selection Guide 1986 Scan
MC146818ACFN Motorola REAL-TIME CLOCK PLUS RAM (RTC) Original
MC146818ACP Motorola REAL-TIME CLOCK PLUS RAM (RTC) Original
MC146818AFN Motorola REAL-TIME CLOCK PLUS RAM (RTC) Original
MC146818AFN Motorola European Master Selection Guide 1986 Scan
MC146818AFN N/A Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Scan
MC146818AL Motorola REAL-TIME CLOCK PLUS RAM(RTC) Original
MC146818AP Motorola REAL-TIME CLOCK PLUS RAM(RTC) Original
MC146818AP Motorola REAL-TIME CLOCK PLUS RAM (RTC) Original
MC146818AP N/A Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Scan
MC146818AS Motorola REAL-TIME CLOCK PLUS RAM(RTC) Original
MC146818C Motorola Real-Time clock plus RAM (RTC) Original
MC146818CP Motorola REAL-TIME CLOCK PLUS RAM (RTC) Original
MC146818CP N/A Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Scan
MC146818P Motorola REAL-TIME CLOCK PLUS RAM (RTC) Original
MC146818P Motorola REAL-TIME CLOCK PLUS RAM (RTC) Scan

MC146818

Catalog Datasheet MFG & Type PDF Document Tags

dallas ds12887 BATTERY INPUT PIN

Abstract: DALLAS SEMICONDUCTOR Ds12887 connection of a 3-volt battery directly to pins that have other functions on the MC146818. Pin , the MC146818. 11 AD7 N/A N/A 12 VSS N/A N/A 13 /CE\ N/A N/A 14 , strobe. It was a "don't care" on the MC146818. 11 AD7 N/A N/A 12 VSS N/A N/A , Maxim > App Notes > REAL-TIME CLOCKS Keywords: Motorola MC146818, DS12887, real time clocks, RTCs Mar 29, 2001 APPLICATION NOTE 521 Replacement for the MC146818 Abstract: This application note
Maxim Integrated Products
Original
DS12885 DS1685 DS1687 DS12887A DS12C887 DS12C887A dallas ds12887 BATTERY INPUT PIN DALLAS SEMICONDUCTOR Ds12887 ds12887 application note DS12885/87 DS1685/87

mc146818

Abstract: ds12887 application note -volt battery directly to pins that have other functions on the MC146818. 1 of 5 033100 APPLICATION , the DS12885/87 needs to be low during the address strobe. It was a "don't care" on the MC146818. N/A , during the address strobe. It was a "don't care" on the MC146818. N/A N/A N/A N/A N/A This pin , Application Note 521 Replacement for the MC146818 www.dalsemi.com OVERVIEW The Motorola MC146818 is no longer in production. There is no direct replacement for this part. However, systems that
Dallas Semiconductor
Original
dallas ds12887 battery 4.194304 crystal oscillator

MC146818

Abstract: directly to pins that have other functions on the MC146818. 1 of 5 033100 APPLICATION NOTE 521 , address strobe. It was a "don't care" on the MC146818. N/A N/A N/A N/A N/A N/A N/A The negative side of , care" on the MC146818. N/A N/A N/A N/A N/A N/A N/A The negative side of the backup battery needs to be , Application Note 521 Replacement for the MC146818 www.dalsemi.com OVERVIEW The Motorola MC146818 is no longer in production. There is no direct replacement for this part. However, systems that
Dallas Semiconductor
Original

IN475

Abstract: MC146818 RTC CHIP MC146818. The total current (Id d ) at 32 kHz operation may be higher than expected if good printed circuit , . The low Q la latch output provides the CE signal used to select the MC146818. This signal goes high at , collector level to the MC146818. CMOS microprocessors, such as the MC146805E2, may be directly interfaced , MC146818 REAL TIME CLOCK APPLICATIONS Prepared by Patrick Svatek System Applications Engineering , concerning the use of a 32 kHz oscillator and battery backup with the MC146818 real time clock (RTC).
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DS-VT-200 IN475 MC146818 RTC CHIP MC74HC373 3volt inverter AN894A CI46818 MC74HC138 ADI-856-R1 AN-0005

MC146818

Abstract: 4.194304 crystal oscillator -volt battery directly to pins that have other functions on the MC146818. 1 of 5 033100 APPLICATION , the DS12885/87 needs to be low during the address strobe. It was a "don't care" on the MC146818. N/A , during the address strobe. It was a "don't care" on the MC146818. N/A N/A N/A N/A N/A This pin , Application Note 521 Replacement for the MC146818 www.dalsemi.com OVERVIEW The Motorola MC146818 is no longer in production. There is no direct replacement for this part. However, systems that
Dallas Semiconductor
Original
MC146818N dallas application note 521 for REAL TIME CLOCK DS12887 1.048576

Motorola MC6805 pin diagram

Abstract: ADI856R3 processor are disconnected within the MC146818. This permits the MC146818JO be isolated from a powered-down , MC146818 MC146818C (VDD = 3.0 to 5.5 V operation) TA TL to Th 0 to 70 -40 to 85 °C Storage Temperature , demultiplex the bus. The falling edge of AS or ALE causes the address to be latched within the MC146818. The , asserting CE cause no actions to take place within fhe MC146818. When CE is high, the multiplexed bus output , the part. ADDRESS MAP Figure 15 shows the address map of the MC146818. The memory consists of 50
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ADI856R3 Motorola MC6805 pin diagram AOI856R3 MC6800 MMD6150 MC6808 MC146818/D MK145BP A14506-5 C59330

MC146818

Abstract: motorola rtc ic S S Operating Temperature Range MC146818 MC146818C (VDD = 3.0 to 5.5 V operation) Storage , the bus. The falling edge of A S or ALE causes the address to be latched within the MC146818. The , cycles which take place without asserting CE cause no actions to take place within t'he MC146818. When , , data, DS, and R/W inputs from the processor are disconnected within the MC146818. This permits the MC146818_to be isolated from a powereddown processor. When CE is held high, an unpowered device cannot
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motorola rtc ic

ADI856R3

Abstract: MC146818 RTC CHIP from the processor are disconnected within the MC146818. This permits the MC146818_to be isolated from , Current Drain per Pin Excluding VQD and VSS I 10 mA Operating Temperature Range MC146818 MC146818C (VDD = , demultiplex the bus. The falling edge of AS or ALE causes the address to be latched within the MC146818. The , place without asserting CE cause no actions to take place within fhe MC146818. When CE is high, the , MAP Figure 15 shows the address map of the MC146818. The memory consists of 50 general purpose RAM
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8085 intel microprocessor block diagram half hour delay circuit mc3870 MC6805 motorola microprocessor interfaces mc6809 Application note MC6801

MC74HC373

Abstract: MC146818 (fâ) MOTOROLA MC146818 Addendum A d van ce Inform ation REAL-TIME CLOCK PLUS RAM (RTC) Advance Information Data Sheet ADI-856-R1 The following information is an addition to PO W ER-DO W N C O N S ID E R A T IO N S found on page 11 of the MC146818 Advance Information Data Sheet (A D I-856-R 1). MC146818s with the date code of 3 N 4 6 X X X X and G C 6 X X X X require a synchroni zation , required) the following circuit need not be used. MC146818 ST A T EK CXIV or Equivalent * BBV =
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6116LP

Abstract: MM58167A shows the typical circuits recommended for the MC146818 and its upgraded version, the MC146818A. MC146818 statek MC146818A According to the Advanced Data Sheet published by Motorola, both versions, the MC146818 and MC146818A, are specified to operate in STBY mode on minimum BBV of 3.0V. However , backup currents drawn by the Motorola RTC MC146818 and MC146818A in standby mode are shown in Table 1 , kHz frequency than the built-in inverter in the MC146818, or the MC146818A, and will operate on 3.0V
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6116LP MM58167A 8418-20L 1500 mah battery digital voltmeter d 5135 MM5817A

146805E2

Abstract: MC14661 rio u s w it n T h is p a rt c io c k MC146818 CMOS (H IG H-PERFO RM AN CE SILICO N-G A TE CO M , notice. MC146818 FIGURE 1 - BLOCK DIA G R A M · CKOUT · CKFS Clock O utp ut O SC I O SC 2 , Operating Tem perature Range M C M 6813 MC146818C , Symbol Value 120 0JA 65 50 °C W Unit 3-700 MC146818 D C E L E C T R IC A L C H A R A C T E R IS , /i A Input C urrent Three-State Leakage MC146818 B U S T IM IN G V DD = 5.0 V ±10% 2 T T L
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MC146618 146805E2 MC14661 RWS - 371-6 mc1466 MC14681B S2000

n82077

Abstract: PC87323VUL is compatible with the DS1287 and MC146818 RTC devices. The PC87323 FDC uses a high performance , DS1287, MC146818 and PC87911 compatible - 242 bytes battery backed-up CMOS RAM in two banks - Calendar
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PC87323VUL n82077 8042AH PC16550A NS16450

mc146818

Abstract: MK48T87 for the MC146818. A lithium energy source, a quartz crystal and write-protection circuitry are contai , rzz SGS-THOMSON DROP-IN REPLACEMENT FOR IBM AT COM PUTER CLOCK/CALENDAR PIN COMPATIBLE WITH THE MC146818 A TOTALLY NONVOLATILE WITH OVER 10 YE ARS OF OPERATION IN THE ABSENCE OF POWER SELF-CONTAINED SUBSYSTEM INCLUDES LITHIUM BATTERY, QUARTZ CRYSTAL AND SUPPORT CIRCUITRY COUNTS SECONDS, MINUTES, HOURS, DAYS, DAY OF THE WEEK, DATE, MONTH AND YEAR WITH LEAP YEAR COMPENSA TION BINARY OR BCD REPRESENTATION
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MK48T87 MK48T87AB MK48T87A DIP-24

mc68h705

Abstract: Motorola AN857 EPROM MCU Programming, Application Note AN1009/D MC146818 Technical Data (ADI-856-R3) MC146818/D MC146818A Technical Data (ADI-1026) MC146818A/D MC146823 Technical Data (ADI-985-R1) MC146823/D MC146818 Real Time Clock User Considerations, Application Note AN894A/D NOTE Motorola
Motorola
Original
M68HC05 MC68HC05B16 mc68h705 Motorola AN857 mc68705u3 motorola application notes an431 MC68705R5 m146805 BR1112/D M68HC08 M6804 M6805HMOS M146805CMOS

la1723

Abstract: SA123 of the Real Time Clock, refer to the specification of MC146818. Power to the Real Time Clock can be , . OTI-054 also includes a Real Time Clock. The Heal Time Clock is compatible to MC146818 with the , Clock The Real Time Clock is compatible to MC146818 with the following exceptions: -128 Bytes of CMOS
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OTI-053 SA21-SA23 la1723 SA123 pca13 146818 rtc SA1-SA19 OTI-O51 OTI-Q51 PCAO-19

n82077

Abstract: PC16550A removed from the PC87306. The PC87306 RTC is compatible with the DS1287 and MC146818 RTC devices. The , addresses. Features (Continued) Real-Time Clock: - DS1287, MC146818 and PC87911 compatible - 242 Bytes
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DP8477 microchannel PCS7306

MC146818 RTC CHIP

Abstract: MC146818 APPLICATION NOTE 5.13 Rev. 1.2 REAL TIME CLOCK CONSIDERATIONS FOR SMSC ULTRA I/O DEVICES by Jeffrey Dunnihoo, Carl Schooley and Nizar Azzam The SMSC DS1287/MC146818 Register Compatible RTC core used in the FDC37C93X has an extraordinarily low power, high impedance 32KHz oscillator ( , DS1287 includes a battery and crystal), and the SMSC RTC has functional differences with the MC146818 as
Standard MicroSystems
Original
DS1287/MC146818 DS1287A FDC37C932 9535-C 6C62665-2-01

real time clock using 8085 microprocessor

Abstract: 146818 interface is a little different from that of the MC146818. Address and data multiplexed bus (AD7:0) is , . Refer to section 'Compatible Configuration with MC146818'. IRQN is activated to 'low' when the interrupt , CFY8181A 146818 CFY8181A GENERAL DESCRIPTION: MC146818 - REAL TIME CLOCK, RAMLESS VERSION , interrupt. It is functionally compatible with MC146818 Real Time Clock except for the 50-byte user RAM. A , MC146818 Real Time Clock. 1) External Interface a) OSC (Oscillator input) The 146818 has 0SC1 and 0SC2 pins
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real time clock using 8085 microprocessor 146818 8085 microprocessor simulator real time clock interrupt using 8085 microprocessor 6818 RTC time delay program of 8085 of 500ms CFY8180A

CS8220

Abstract: 82C201 real time clock MC146818. 23,24 o PORTBRD PORTBWR READ and WRITE signals for the I/O PORT B are active , the real time clock MC146818 or PORT C read strobe, at address 62h. 26 o SRTRW-PORTCWR Multiplexed REAL TIME CLOCK READ/WRITE output for the real time clock device MC146818. A HIGH state indicates a , signal for the real time clock device MC146818. 32 I XBHE BUS HIGH ENABLE signal is used in the same way
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82C202A 82C202 CS8220 8042CS P82C202A 82C201 82C206 8220A 80286 schematic 00DD43 T-52-33-21 CS8220A-10/12

MC68120

Abstract: MC6844 Mbytes per second rate. Available in P, S and L package. MC6844 MC68120 MC68121 MC146818A Parallel , periodic interrupt and square wave generator, and 50 bytes of low-power static RAM. The MC146818 RTC , power. This makes an ideal device for use in a battery backup environment. MC146818A MOTOROLA EUROPEAN
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MCM68HC34 M6800 MCM6810 M6800 Family mc681 MC146818RTC M6800-C

146818 rtc

Abstract: 8085 interface with 8085 CFY8180A 146818 CFY8180A GENERAL D ESCRIPTIO N: MC146818 - REAL TIME CLOCK CFY8180A is a , different from that of the MC146818. Address and Data multiplexed bus (AD7:0) is separated into Address (A5 , incompatibilities with the standard MC146818 Real Time Clock. 1) External Interface a) OSC (Oscillator input) The , configuration. Refer to section 'Compatible Configuration with MC146818'. IRQN is activated to 'low' when the , 'O'. Compatible Configuration with MC146818 The figure on the following page shows the function
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8085 interface with 8085 8085 Function hex code C146818

Motherboard IBM t21

Abstract: CS8220 TIME CLOCK ADDRESS STROBE for the real time clock MC146818. 23,24 o PORTBRD PORTBWR READ and WRITE , Muliplexed data strobe output for the real time clock MC146818 or PORT C read strobe, at address 62h. 26 o SRTRW-PORTCWR Multiplexed REAL TIME CLOCK READ/WRITE output for the real time clock device MC146818. A HIGH , address strobe signal for the real time clock device MC146818. 32 I XBHE BUS HIGH ENABLE signal is used
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OCR Scan
Motherboard IBM t21 RIF 206 82c206 ipc 82c206 schematic CHIPset for 80286 PC MOTHERBOARD ibm rev 1.5 384KB 2-202B 68-PIN PLCC-68

PCA15

Abstract: SA21-SA23 OT1-Q54 1.0 INTRODUCTION TO OTl-054 ADDRESS BUFFER and REAL TIME CLOCK OTI-054 contains the address buffer drivers for IBM AT or Model 30 286 compatible systems and replaces all the TTL address and command drivers that are normally required on the system board. In addition to the Address drivers. OTI-054 also includes a Real Time Clock. The Real Time Clock is compatible to MC146818 with the following , , refer to the specification of MC146818. Power to the Real Time Clock can be backed up by a 3V battery
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PCA15 PCA19 OTI-Q54 OTI-051 IOH-400 LA17-23 SAO-23 SA1-23
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