atr0630 ATMEL Corporation, atr0630 Datasheet - Page 19

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atr0630

Manufacturer Part Number
atr0630
Description
Antaris4 Single-chip Gps Receiver - Atmel Corporation
Manufacturer
ATMEL Corporation
Datasheet
3.5
4920B–GPS–06/06
Connecting an Optional Serial EEPROM
The ATR0630 offers the possibility of connecting an external serial EEPROM. The internal ROM
firmware supports storing the configuration of the ATR0630 in serial EEPROM. The pin
P16/NEEPROM signals the firmware that a serial EEPROM is connected to the ATR0630. The
ATR0630’s 32-bit RISC processor accesses the external memory via SPI (serial peripheral inter-
face). For best results, use a 32-Kbit 1.8V serial EEPROM such as Atmel’s AT25320AY1-1.8.
Figure 3-3
Figure 3-3.
Note:
AT25320AY1-1.8
The GPSMODE pin configuration feature can be disabled, because the configuration can be
stored in the serial EEPROM. VDDIO is the supply voltage for the pins: P23, P24, P25 and P29.
NC: Not connected
shows an example of the serial EEPROM connection.
Example of a Serial EEPROM Connection
+3V
(see Power Supply)
HOLD_N
WP_N
CS_N
SCK
SO
SI
GND
GND
NC
ATR0630 [Preliminary]
P23/SCK
P24/MOSI
P25/MISO/NAADET0
P29/NPCS3
P16/NEEPROM
P1/GPSMODE0
GND
NSHDN
LDO_EN
LDO_OUT
VDD18
VDDIO
LDO_IN
LDOBAT_IN
ATR0630
19

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