atr0621p ATMEL Corporation, atr0621p Datasheet - Page 19

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

3.4.1
4890G–GPS–01/08
Connecting an Optional FLASH Memory
The ATR0621P offers the possibility to connect an external FLASH memory. The high perfor-
mance ARM7
code, that is stored in the FLASH memory. The 32-bit RISC processor of the ATR0621 accesses
the external memory via the EBI (External Bus Interface). Atmel recommends to use 1.8V
FLASH memory, e.g. the Atmel AT49SV802A. The LDO_OUT pin of the ATR0621P can supply
the external FLASH memory.
connection.
Figure 3-3.
AT49SV802A
NC: Not connected
™
Example of an External FLASH Memory Connection
32-bit RISC processor of the ATR0621P can be used to run application specific
READY/BUSY_N
+3V
(see Power Supply)
RESET_N
BYTE_N
I/O0-15
WE_N
OE_N
A0-18
CE_N
GND
VSS
NC
Figure 3-3
GND
NC
NC
shows an example of the external FLASH memory
GND
EM_DA0-15
EM_A1-19
P4/NCS0
P5/NWE
P6/NOE
NRESET
GND
NSHDN
LDO_EN
LDO_OUT
VDD18
LDO_IN
LDOBAT_IN
ATR0621P
ATR0621P
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