atr0621p ATMEL Corporation, atr0621p Datasheet - Page 17

• Manufacturer Part Number: atr0621p
• Description: Atr0621p Gps Baseband Processor
• Manufacturer: ATMEL Corporation

Table 3-15.
4890G–GPS–01/08
Pin Name
P0/NANTSHORT
P1/GPSMODE0
P2/BOOT_MODE
P3/NCS1
P4/NCS0
P5/NWE/NWR0
P6/NOE/NRD
P7/NUB/NWR1
P8/STATUSLED
P9/EXTINT0
P10/EM_A0/NLB
P11/EM_A21/NCS2
P12/GPSMODE2/NPCS2
P13/GPSMODE3/EXTINT1
P14/NAADET1
P15/ANTON
P16/NEEPROM
P17/GPSMODE5/SCK1
P18/TXD1
P19/GPSMODE6/SIGLO1
P20/TIMEPULSE/SCK2
P21/TXD2
P22/RXD2
P23/GPSMODE7/SCK
Recommended Pin Connection
Recommended External Circuit
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused.
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
user application.
Internal pull-down resistor, leave open.
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.
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.
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.
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.
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.
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.
Internal pull-up resistor, leave open if unused.
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.
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.
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
page
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
page
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused.
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused.
Internal pull-up resistor, leave open if no serial EEPROM is connected. Otherwise connect to GND.
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
page
Output in default ROM firmware: leave open if serial interface is not used.
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
page
Output in default ROM firmware: leave open if timepulse feature is not used.
Output in default ROM firmware: leave open if serial interface not used.
Internal pull-up resistor, leave open if serial interface is not used.
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
page
11.
11.
11.
11.
11.
“Setting GPSMODE0 to GPSMODE12” on page
11. Can be left open if configured as output by
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
ATR0621P
17