GENERAL DESCRIPTION
This data sheet describes the operation of the PCD5008 integrated paging decoder. It is fully compatible with the Motorola FLEXchip™ IC.
The PCD5008, also referred to as the decoder, simplifies implementation of a FLEX paging device, by being able to interface with several off-the-shelf paging receivers and host microcontrollers/processors. Its primary function is to process information received and demodulated from a FLEX radio paging channel, select messages addressed to the paging device and communicate the message information to the host.

FEATURES
• FLEX™ paging protocol signal processor
• 16 programmable user address words
• 16 fixed temporary addresses
• 1600, 3200 and 6400 bits/s decoding
• Any-phase or single-phase decoding
• Uses standard serial peripheral interface (SPI) in slave mode
• Allows low current power-down mode operation of host processor
• Highly programmable receiver control
• Real-time clock time base
• FLEX™ fragmentation and group messaging support
• Real-time clock over-the-air update support
• Compatible with synthesized receivers
• Low battery indication (external detector)
• Low cost LQFP32 plastic package
• Operates using a 76.8 kHz crystal
• Very low power consumption
• Operates at low supply voltage.

APPLICATIONS
• Numeric FLEX™ pagers
• Alphanumeric FLEX™ pagers
• Remote metering
• Car security systems
• Personal digital assistants.