STA5620 STMicroelectronics, STA5620 Datasheet - Page 11

• Manufacturer Part Number: STA5620
• Description: IC RF FRONT END RECEIVER 32VFQFP
• Manufacturer: STMicroelectronics

Specifications of STA5620

• Modulation Or Protocol: GPS
• Current - Receiving: 19mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.5 V ~ 3.3 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VFQFN
• Pin Count: 32
• Screening Level: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Frequency: -
• Applications: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / Rohs Status: Compliant

STA5620
3.9
Power control modes
Three different power control modes can be chosen by means of the CHIP_EN and the
RF_EN pins. If the CHIP_EN pin is forced low the device goes to stand-by mode with very
low power consumption. On the other hand, if CHIP_EN is set high, two scenarios are
possible:
1.
2.
A logic reset of the SPI registers is generated by the low to high transitions of the CHIP_EN
pin. External pin strapping dominates until some SPI commands reverse the priority and
overrides the strapping until next reset.
IIf RF_EN = 0 the crystal oscillator and only one output buffer are enabled,
XTAL_CLK if MODE = 1 or GPS_CLK if MODE = 0;
If RF_EN = 1 the whole chip is active and functional.
Only if MODE = 0 the XTAL_CLK output is disabled.
Functional description
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