General purpose microcontroller M48A series

with radio transmitterprogrammable

The M48A is a half-duplex serial modem controller suitable for use with narrow band receivers, transmitters and transceivers. It supports a maximum transparent data throughput of 4800baud while baseband modulation frequencies do not exceed 3.2KHz The device supports (programmable) long startup/preamble durations sometimes required for synthesized narrow band devices. Features Operating voltage (temperature): 5V for standard version (-40°C to +85°C) Maximum usage of the range capability of an RF module Compatible with fast or slow transmitter power up timing requirements 5kbps pulse duration coded protocol Synchronisation codes and checksum to reduce false triggering on noise Programmable transmit address and four receive addresses Programmable timing parameters (preamble length, etc) Programmable auxiliary serial output (to program radio modules) Programmable serial modem baud rate (1200 - 76800 bps, half-duplex) Suitable to be used with Narrow Band FM radio modules Addressable point-to-point and point to multi point Packet acknowledge/resend (ACK) mode Store and forward repeater function Applications PDAs, organisers & laptops Handheld / portable terminals Remote operated vehicles Data loggers In-building environmental monitoring and control Industrial (SCADA) telemetry and M2M systems Fleet management, vehicle data acquisition