MV6639

The MV6639 is a kind of POCSAG decoder. It is capable of operating at 512 or 1200 baud. This device together with a suitable receiver, provides the major components for a POCSAG pager. POCSAG is the acronym for Post Office Code Standardisation Advisory Group. The design is suitable for low power, low voltage use. The typical applications include wrist watch pager, message display pager, tone only pager and data receivers.

There are some features as follows: (1)low voltage supply (1.1 V min, 3.5 V max); (2)low current consumption (typically 15A); (3)voltage doubler for radio receiver or P and display; (4)true 2 bit CRC error correction; (5)tone only and/or messaging pager at 512 or 1200 baud using a single 32768Hz crystal; (6)silent call storage; (7)directly drives tone transducer; (8)programmable tone generator output frequency (2048 or 2731 Hz); (9)interface to SL6609 radio receiver chip; (10)low battery alert.

What comes next is about the absolute maximum ratings: (1)supply voltage (VDD2-GND): -0.5 to 5 V; (2)voltage on any pin: -0.3 to VDD2+0.3 V; (3)operating temperature: -20 to +70; (4)storage temperature: -55 to +125.