參數(shù)資料
型號: ATR0621N-7FQY
廠商: ATMEL CORP
元件分類: 無繩電話/電話
英文描述: TELECOM, CELLULAR, BASEBAND CIRCUIT, PBGA100
封裝: 9 X 9 MM, 0.80 MM PITCH, ROHS COMPLIANT, LFBGA-100
文件頁數(shù): 16/31頁
文件大?。?/td> 477K
代理商: ATR0621N-7FQY
23
4890C–GPS–10/06
ATR0621
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.
Figure 4-3.
External Wiring Example Using Internal LDOs, USB Supply Voltage and Backup Power Supply
ATR0621 internal
USB-VSB 5V
VDDUSB
1.5V to 3.6V
1 F
(X7R)
ldoout
ldoen
ldoin
LDO18
LDO_IN
1 F
(X7R)
VDDIO
LDO_EN
NSHDN
VDD18
External
LDO 3.3V
LDO_OUT
USB SM and
Transceiver
1.8V to 3.3V
variable IO Domain
RTC
Backup Memory
Core
vbat18
vbat
vdd
ldobat_in
LDOBAT
LDOBAT_IN
VBAT
VBAT18
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