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
6. Power Supply
The power supply circuitry and board layout are a very important part in the full
product design and they strongly reflect on the product overall performances, hence
read carefully the following requirements and guidelines for a proper design.
6.1. Power Supply Requirements
POWER SUPPLY
SW rel. 7.02.xx4 or
older
SW rel. 7.03.x00 or
newer
Nominal Supply Voltage 3.8 V 3.8 V
Max Supply Voltage 4.2 V 4.5 V
Supply voltage range 3.4 V - 4.2 V 3.22 V – 4.5 V
The GC864-QUAD / PY power consumptions are:
GC864-QUAD / PY
Mode
Average
(mA)
Mode description
SWITCHED OFF
Switched Off
<26 uA
Module supplied but Switched Off
IDLE mode
AT+CFUN=1
19.0 Normal mode: full functionality of the module
AT+CFUN=4
18.2 Disabled TX and RX; module is not registered on the network
6.6 Paging Multiframe 2
4.5 Paging Multiframe 4
3.3 Paging Multiframe 6
3.2 Paging Multiframe 8
AT+CFUN=0 or =5
2.5 Paging Multiframe 9
CSD TX and RX mode
GSM900 CSD PL5 237.3
DCS1800 CSD PL0 223.8
GSM VOICE CALL
GPRS (class 10) 1TX
GSM900 PL5 264,0
DCS1800 PL0 176,0
GPRS Sending data mode
GPRS (class 10) 2TX
GSM900 PL5 473,8
DCS1800 PL0 307,8
GPRS Sending data mode
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