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 |
|---|---|---|---|---|---|
MCP79401-I/ST
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-TSSOP | 82 | $0.97 | |
MCP79400-I/MS
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-MSOP | 192 | $0.89 | |
|
MCP79400-I/ST
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-TSSOP | 715 | $0.89 | |
|
MCP7940N-I/ST
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-TSSOP | 62 | $0.80 | |
|
MCP7940M-I/ST
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-TSSOP | 350 | $0.64 | |
|
MCP7940M-I/MS
|
Microchip Technology | IC RTC CLK/CALENDAR I2C 8-MSOP | 575 | $0.64 | |
DS1746-70IND+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 32-EDIP | 45 | $36.88 | |
DS1746P-70+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 34-PCM | 54 | $31.71 | |
DS1744W-120IND+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 28-EDIP | 9 | $28.34 | |
|
DS1744WP-120+
|
Maxim Integrated | IC RTC CLK/CALENDAR PAR 34-PCM | 48 | $26.68 |