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參數(shù)資料
| 型號(hào)： | ATR0621N-7FQY |
| 廠商： | ATMEL CORP |
| 元件分類： | 無(wú)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(yè)數(shù)： | 9/31頁(yè) |
| 文件大小： | 477K |
| 代理商： | ATR0621N-7FQY |
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17
4890C–GPS–10/06
ATR0621
Table 3-15.
Recommended Pin Connection
Pin Name
Recommended External Circuit
P0/NANTSHORT
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused.
P1/GPSMODE0
Internal pull-down resistor, leave open, in order to disable the GPSMODE pin configuration feature.
Connect to VDD18 to enable the GPSMODE pin configuration feature. Refer to GPSMODE definitions in
section “Setting GPSMODE0 to GPSMODE12” on page 11. Can be left open if configured as output by
user application.
P2/BOOT_MODE
Internal pull-down resistor, leave open.
P3/NCS1
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P4/NCS0
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P5/NWE/NWR0
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P6/NOE/NRD
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P7/NUB/NWR1
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P8/STATUSLED
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P9/EXTINT0
Internal pull-up resistor, leave open if unused.
P10/EM_A0/NLB
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P11/EM_A21/NCS2
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
P12/GPSMODE2/NPCS2
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section “Setting GPSMODE0 to GPSMODE12” on
P13/GPSMODE3/EXTINT1
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section “Setting GPSMODE0 to GPSMODE12” on
P14/NAADET1
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused.
P15/ANTON
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused.
P16/NEEPROM
Internal pull-up resistor, leave open if no serial EEPROM is connected. Otherwise connect to GND.
P17/GPSMODE5/SCK1
Internal pull-down resistor, can be left open if the GPSMODE feature is not used or configured as output
by user application. Refer to GPSMODE definitions in section “Setting GPSMODE0 to GPSMODE12” on
P18/TXD1
Output in default ROM firmware: leave open if serial interface is not used.
P19/GPSMODE6/SIGLO1
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section “Setting GPSMODE0 to GPSMODE12” on
P20/TIMEPULSE/SCK2
Output in default ROM firmware: leave open if timepulse feature is not used.
P21/TXD2
Output in default ROM firmware: leave open if serial interface not used.
P22/RXD2
Internal pull-up resistor, leave open if serial interface is not used.
P23/GPSMODE7/SCK
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section “Setting GPSMODE0 to GPSMODE12” on
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