Digi Connect ME Hardware Reference

Memory
46
Memory
The Digi Connect ME has the following types of memory.
Flash
The Digi Connect ME has 2 or 4 MB of flash memory. The Digi Connect Wi-ME has 4 MB or 8 MB
of flash memory.
On the Digi Connect ME/ARM7 family, the flash memory is controlled by chip select 0, located at
0x02000000.
On the Digi Connect ME 9210/ARM9 family, the flash memory is controlled by chip select 2
(default=st_cs1) and is located at 0x50000000.
SDRAM
The Digi Connect ME and the Digi Connect Wi-ME’s SDRAM is controlled by chip select 1 and is
located at 0x00000000.
The Digi Connect ME 9210’s SDRAM is controlled by chip select 1 (default = dy_cs0) and is
mapped to 0x00000000.
The embedded modules have 8 MB of SDRAM memory.
The following table illustrates typical power consumptions using these power management
mechanisms. These measurements were taken with all Digi NS9210 processor’s I/O clocks disabled
except UART A, UART C, Ethernet MAC, I/O Hub and Memory Clock0 with the ethernet
connected to a 100Mb network, using a standard module plugged into a Digi JumpStart Kit
development board, with nominal voltage applied:
Note 1: This measurement was taken from the R6 current sense resistor using a 0.025 ohm shunt on
the JumpStart Kit development board.
Note 2: This is the default power consumption mode when entering applicationStart(), as measured
with the napsave sample application. The value of the NS9210 Clock Configuration register
(A090017C) is 0001200B hexadecimal.
Note 3: This measurement was produced by selecting the “Clock Scale” menu option in the napsave
sample application.
Note 4: This measurement was produced by selecting the “Deep Sleep/Wakeup with an External
IRA” menu option in the napsave sample application.
Mode Power Consumption
1
Normal Operational Mode
2
1.14W (346mA)
Full Clock Scaling Mode
3
.613W (186mA)
Sleep Mode
4
.113W (34mA)

Digi Connect ME Specifications

General

Brand	Digi
Model	Connect ME
Category	Network Hardware
Language	English