YS05S16-0G Datasheet, PDF (13/23 Pages) List of Unclassifed Manufacturers – GPS Module TC6000GN-P1

GPS Module TC6000GN-P1
Datasheet V022
confidential information preliminary specification
9 POWER MANAGEMENT
For quick re-acquisition after power-on, the TC6000GN should stay tied to Vcc during off-times to
keep it's RTC clock running. The module is put in sleep mode, by holding the PUSH_TO_FIX pin low.
The pin may be controlled by the host controller or by another power management circuitry, which
might be also a simple electromechanical switch.
A static low level on PUSH_TO_FIX will keep the TC6000GN-P1 in a deep sleep with power
consumption below 100μA.
10 RTC CONNECTION
The RTC_CLK is a free-running clock that needs to be supplied from an external clock source. It is
connected to the RTC_CLK pin on the TC6000GN-P1 , and is a digital square wave signal in the
range of 0 V to 1.8 V (nominal). The slow clock frequency is 32.768 kHz. RTC_CLK has multiple
functionalities:
Used to maintain GPS time between sleep intervals
For clock frequency detection at power-on reset, before TCXO_CLK is available
For power up sequencing.
Parameter
Input slow clock frequency
Input slow clock accuracy
Input transition time
Frequency input duty cycle
V_IH
V_IL
Load capacitance
Load resistance
Digital RTC Requirements
Min
Typ
Max
Unit
32,768
±200
Hz
ppm
100
ns
20%
50%
80%
0.65x
VDD_IO
VDD_IO
V
0
0.35xVDD_IO V
10
pF
1
M
Note
Initial temperature + aging
t_R/t_F: 10% to 90%
Slow clock input voltage limits
Slow clock input voltage limits
Capacitance on RTC_CLK pin
Resistance on RTC_CLK pin
13
© GNS-GmbH 2011
V 0.22, Sep5^th 2012