User's Manual
Table Of Contents
- GC864 Hardware User Guide
- APPLICABILITY TABLE
- 1. Introduction
- 2. Overview
- 3. GC864 Mechanical Dimensions
- 4. GC864-QUAD/PY Module Connections
- 5. Hardware Commands
- 6. Power Supply
- 7. Antenna
- 8. Logic Level Specifications
- 9. Serial Ports
- 10. Audio Section Overview
- 11. General Purpose I/O
- 11.1. GPIO Logic Levels
- 11.2. Using a GPIO Pad as INPUT
- 11.3. Using a GPIO Pad as OUTPUT
- 11.4. Using the RF Transmission Control GPIO4
- 11.5. Using the RFTXMON Output GPIO5
- 11.6. Using the Alarm Output GPIO6
- 11.7. Using the Buzzer Output GPIO7
- 11.8. Magnetic Buzzer Concepts
- 11.9. Using the Temperature Monitor Function
- 11.10. Indication of Network Service Availability
- 11.11. RTC Bypass Out
- 11.12. VAUX1 Power Output
- 12. DAC and ADC Section
- 13. Mounting the GC864-QUAD/PY on the Board
- 14. Packing System
- Conformity Assessment Issues
GC864 Hardware User Guide
1vv0300733 Rev.12 – 2009-06-04
12.1.3. Low Pass Filter Example
12.2. ADC Converter
12.2.1. Description
The on board A/D are 11-bit converter. They are able to read a voltage level in the
range of 0÷2 volts applied on the ADC pin input, store and convert it into 11 bit word.
Min Max Units
Input Voltage range 0 2 Volt
AD conversion - 11 bits
Resolution - < 1 mV
The GC864-QUAD / PY module provides 3 Analog to Digital Converters. The input
lines are:
ADC_IN1 available on Pin 37 and Pin 19 of PL102 on EVK2 Board (CS1203).
ADC_IN2 available on Pin 38 and Pin 20 of PL102 on EVK2 Board (CS1203).
ADC_IN3 available on Pin 39 and Pin 21 of PL102 on EVK2 Board (CS1203).
12.2.2. Using ADC Converter
The AT command below is available to use the ADC function:
AT#ADC=1,2
The read value is expressed in mV.
Refer to SW User Guide or AT Commands Reference Guide for the full description of
this function.
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