| | | | Mailing List
Ricevi le novità hardware e software, i trucchi e download più recenti, direttamente nella tua casella email, ‹Iscriviti qui!› | | | | |
| | | |  
Data/Ora Server
15-Oct-2008 20:53:46
(GMT +0200) | | | | |
| |
Categoria: Principale/Elettronica/Raccolta Datasheet
Ordina per: Titolo (A\D) Data (A\D) Giudizio (A\D) Popolarità (A\D)
Risorse correntemente ordinate per: Date (Nuovi Prima)| Data Inserimento 25-Mar-2005 |
74 downloads | 
0 bytes | 
Vota Download | 
Download Errato | 
Dettagli
|
Descrizione The NE556 dual monolithic timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. In the time delay mode of peration,
the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA.
| Data Inserimento 25-Mar-2005 |
78 downloads |
0 bytes |
Vota Download |
Download Errato |
Dettagli
|
Descrizione The NE555 monolithic timing circuit is a highly stable
controller capable of producing accurate time delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA.
| Data Inserimento 25-Mar-2005 |
76 downloads |
0 bytes |
Vota Download |
Download Errato |
Dettagli
|
Descrizione The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C™, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the battery supply.
| Data Inserimento 25-Mar-2005 |
67 downloads |
0 bytes |
Vota Download |
Download Errato |
Dettagli
|
Descrizione The DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.
Interfacing the DS1302 with a microprocessor is simplified by using synchronous serial communication. Only three wires are required to communicate with the clock/RAM: CE, I/O (data line), and SCLK (serial clock). Data can be transferred to and from the clock/RAM 1 byte at a time or in a burst of up to 31 bytes. The DS1302 is designed to operate on very low power and retain data and clock information on less than 1µW.
|
|
|
|
|
