DS1680 Description
The DS1680 incorporates many functions necessary for low-power portable products, providing an RTC, NV RAM controller, microprocessor monitor, power- fail warning, 10-bit ADC, and a touch-screen controller in one chip. The RTC provides seconds, minutes, hours, day, date, month, and year information with leap-year pensation as well as an alarm interrupt. This interrupt works when the DS1680 is powered by the system...
DS1680 Key Features
- Real-time clock (RTC)
- Counts seconds, minutes, hours, date, month, day of the week, and year with leap-year pensation valid up to 2100
- Power control circuitry supports system power-on from day/time alarm Microprocessor monitor
- Halts microprocessor during power- fail
- Automatically restarts microprocessor after power failure
- Monitors pushbutton for external override
- Halts and resets an out of control microprocessor NV RAM control
- Automatic battery backup and write protection to external SRAM 1.25V threshold detector for power- fail warning 10-bit a
- Monotonic with no missing codes Four-wire analog resistive touch-screen interface
- 44-Pin MQFP (10 x 10 x 2mm) Package dimension information can be found at