W93910 Datasheet, PDF (1/35 Pages) Winbond – ERMES PAGING DECODER

W93910
ERMES PAGING DECODER
GENERAL DESCRIPTION
The W93910 is a low-power ERMES (Enhanced Radio MEssage System) paging protocol decoder
using a single 100 kHz crystal. The W93910 supports individual call, group call, long message,
changing character set and remote programming functions. To enhance the sensitivity of the pager
system, a digital filter and DPLL are incorporated to remove noise and lock the signal. For convenient
pager programming, the W93910 provides fully software-programmable options and also offers an
independent LED frequency output.
With built-in flexible RF power saving control, frequency synthesizer enable control, quick charge
controls, as well as automatic channel scan algorithm, the W93910 can combine with different RF
receivers to construct a high performance, low power dissipation pager system.
FEATURES
• 100 kHz crystal
• Built-in digital filter and digital phase lock loop
• Built-in two addresses concurrently
• One remote programming address
• International roaming capability
• Automatic channel scan algorithm
• Built in de-interleaving circuit
• 2-bit random error correction
• Individual call, long message, changing character set and remote programming
• CTAP group call
• Serial interface with µC
• 2-bit signal input from RF receiver
• RF and frequency synthesizer power saving control available
• Quick charge-discharge timing control
• Provides LED output
• 2.5 to 3.5 volts operating voltage range
• Packaged in 28-pin SSOP
Publication Release Date: Auguest 1999
-1-
Revision A1