atr0630 ATMEL Corporation, atr0630 Datasheet - Page 22
atr0630
Manufacturer Part Number
atr0630
Description
Antaris4 Single-chip Gps Receiver - Atmel Corporation
Manufacturer
ATMEL Corporation
Datasheet
1.ATR0630.pdf
(36 pages)
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Figure 4-2.
22
ATR0630 [Preliminary]
Connecting Example: Common Power Supplies for RF and Digital Part Using the Internal LDOs
2.7V to 3.3V
1.5V to 3.6V
NSHDN
The RTC section will be initialized properly if VDD18 is supplied first to the ATR0630. If VBAT is
applied first, the current consumption of the RTC and backup SRAM is undetermined.
The USB Transceiver is disabled if VDD_USB < 2.0V. In this case the pins USB_DM and
USB_DP are connected to GND (internal pull-down resistors). The USB Transceiver is enabled
if VDD_USB within 3.0V and 3.6V.
0V or 3V to 3.6V
1 µF
(X7R)
1 µF
(X7R)
LDOBAT_IN
LDO_OUT
VDDUSB
LDO_EN
LDO_IN
VBAT18
VDD18
VDDIO
VCC1
VCC2
VDIG
VBAT
VBP
ldoin
ldoen
ldoout
ldobat_in
vbat
vbat18
variable IO domain
backup memory
USB SM and
1.8V to 3.3V
transceiver
Core
RTC
RF
ATR0630 internal
LDOBAT
LDO18
VDD
4920B–GPS–06/06
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