Real Time Clocks
Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.
| Part Number | Manufacturer | Description | Quantity | Price | Option |
|---|---|---|---|---|---|
DS17887-5+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 24-EDIP | 38 | $19.84 | |
|
DS17887-3+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 24-EDIP | 87 | $19.84 | |
DS1670E+
|
Maxim Integrated | IC RTC SYSTEM CTRLR SER 20-TSSOP | 34 | $9.23 | |
MCP79522-I/MS
|
Microchip Technology | IC RTC CLK/CALENDAR SPI 10-MSOP | 303 | $1.32 | |
|
MCP79521-I/MS
|
Microchip Technology | IC RTC CLK/CALENDAR SPI 10-MSOP | 372 | $1.32 | |
MCP79400-I/SN
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-SOIC | 150 | $0.84 | |
MCP7940N-I/P
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8DIP | 489 | $0.82 | |
|
MCP7940M-I/SN
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-SOIC | 882 | $0.60 | |
DS1556-70+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 32-EDIP | 77 | $37.57 | |
DP8570AV/NOPB
|
Texas Instruments | IC RTC CLK/CALENDAR PAR 28-PLCC | 69 | $32.60 |