Recommended Interface Circuitry; Status Group Recommended Circuitry - Wavecom CM52 Integrator's Manual

3 Recommended Interface Circuitry

Abbreviations:
VCC - Represents the logic supply voltage used by the application.
VREF_CA- Current amplified reference voltage used for all logic interface circuitry to the CM52.
Component proposals:
Transistors not showing a base resistor should be interpreted as a BRT (Built in Resistor
Transistor) i.e. Toshiba RN1308.
The inverting buffers should preferably be Schmitt-Triggered, i.e. Toshiba TC7S14 or similar.
3.1

Status Group Recommended Circuitry

The status group contains four signals, one output signal from the application and three input
signals to the application.
CM52 Integrators' Manual
WI_DEV_CM52_UGD_001-001
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CM52 Integrators' Manual