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
The set command could be used also with one of the following GPIO but in that case
the alternate function is not usable:
Signal Function Type
Input /
output
current
Note
TGPIO_02 GPIO02 Configurable GPIO CMOS 2.8V
1A / 1mA
Alternate function (JDR)
TGPIO_04 GPIO04 Configurable GPIO CMOS 2.8V 1A / 1mA
Alternate function (RF
Transmission Control)
TGPIO_05 GPIO05 Configurable GPIO CMOS 2.8V 1A / 1mA Alternate function (RFTXMON)
TGPIO_07 GPIO07 Configurable GPIO CMOS 2.8V 1A / 1mA Alternate function (BUZZER)
11.10. Indication of Network Service Availability
The STAT_LED pin status shows information on the network service availability and Call
status.
In the GC864-QUAD/PY modules, the STAT_LED usually needs an external transistor to drive
an external LED.
Therefore, the status indicated in the following table is reversed with respect to the pin
status.
LED status Device Status
Permanently off Device off
Fast blinking
(Period 1s, Ton 0,5s)
Net search / Not registered /
turning off
Slow blinking
(Period 3s, Ton 0,3s)
Registered full service
Permanently on a call is active
A schematic example could be:
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