RGPSD012 Semtech, RGPSD012 Datasheet - Page 7

• Manufacturer Part Number: RGPSD012
• Description: KIT EVAL FOR RGPSM002
• Manufacturer: Semtech
• Type: GPSr

Specifications of RGPSD012

• For Use With/related Products: RGPSM002
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Important Note: after the DELPOSN is activated, the receiver should make a position fix before it saves GPS data in its
back-up Flash memory
If the DELPOSN is set “low” for more than 3 seconds, the BBFLASH content is erased and the receiver restarts in Cold
Start condition.
5.2
The receiver has 4 main operating modes, as summarized in the table below
Mode
Active Mode
Power Save Mode
Stand-by Mode
Power Down Mode
© Semtech 2005
OPERATING MODES
DELPOSN default value
Description
Receiver is running, doing
acquisition, tracking, position fixes
GPS receiver functions are turned
OFF, MCU in idle mode, MCU clock
is running, RTC is running
GPS receiver functions are turned
OFF, MCU clock is stopped, RTC is
running
GPS receiver functions are turned
OFF, MCU clock is stopped, RTC is
running on the Back-up supply
Power save
“LP” NMEA
com
‘Delete Initial Position’ Request
(Delay > 100 ms,
Figure 3 - Switching between operating modes
ON/OFF
NMEA com
Any valid
“low”
<1.5 sec.)
Figure 2 – DELPOSN timing diagram
Table 3 – Operating modes
STANDBYN “high”
if ON/OFF was “low”
Power down
STANDBYN “low”
ON/OFF
Active
“high”
VCC switched Off
ON/OFF “low”
VCC pin
Powered
Powered
Powered
No power
7
Beginning of the ‘Delete Initial Position’ task
ON/Off pin
High
Low (or thru
NMEA
command)
Low (or thru
NMEA
command)
Low
STANDBYN “high”
if ON/OFF was “high”
VCC switched On
ON/OFF “low”
Stand-by
STANDBYN
pin
High
High
Low
Low
RGPSM002
GPS Receiver
www.semtech.com
Current
consumption
20 mA
3 mA
<500 uA
2 uA