Rainbow-electronics ATR0635P1 Uživatelský manuál Strana 20

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20
4979D–GPS–06/08
ATR0635P1
4. Power Supply
The ATR0635P1 is supplied with six distinct supply voltages:
The power supplies for the RF part (VCC1, VCC2, VBP) within 2.7V to 3.3V.
VDIG, the 1.8V supply of the digital pins of the RF part (SIGHI, SIGLO and CLK23). VDIG
should be connected to VDD18.
VDD18, the nominal 1.8V supply voltage for the core, the I/O pins, the memory interface and
the test pins and all GPIO pins not mentioned in next item.
VDDIO, the variable supply voltage within 1.8V to 3.6V for the following GPIO pins: P1, P2,
P8, P12, P14, P16, P17, P18, P19, P20, P21, P23, P24, P25, P26, P27 and P29. In input
mode, these pins are 5V input tolerant.
VDD_USB, the power supply of the USB pins: USB_DM and USB_DP.
VBAT18 to supply the backup domain: RTC, backup SRAM and the pins NSLEEP, NSHDN,
LDO_EN, VBAT18, P9/EXTIN0, P13/EXTINT1, P22/RXD2 and P31/RXD1 and the 32kHz
oscillator. In input mode, the four GPIO-pins are 5V input tolerant.
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