Power Management (Digi Connect Me 9210 Only); Thermal Specifications - Digi Connect ME Hardware Reference Manual

Module specifications

Power management (Digi Connect ME 9210 only)

Using the Digi NET+OS development environment, applications on the Digi Connect ME 9210 are
capable of operating the module in several reduced power consumption modes. These reduced power
operating modes utilize the power management mechanisms for the NS9210 processor for CPU clock
scaling and sleep.
In the Clock Scaling mode, the system itself continues to execute instructions, but at a different clock
rate, which can be changed on-the-fly, using Digi's patented circuitry inside the NS9210 processor. The
clock speed is changed programmatically to lower or raise the system clock speed, thus reducing or
increasing the module's power footprint, respectively.
Additionally, a Sleep mode is available in which the system stops executing instructions. Based on the
application needs, wake-up triggers can be set up programmatically to activate the processor back to
wherever it left off. In this mode, a drastic power reduction is realized by reducing the power
consumption of the NS9210 processor and the on-module PHY.
For sample power consumption figures for normal (typical) and power management related operation
of the Digi Connect ME 9210, see below:
3.3VDC @ 346 mA typical (1.14W)
n
UART and Ethernet activated
n
Low speed idle mode (approximate)
3.3VDC @ 186 mA (613 mW)
n
/16 clock scaling, Ethernet activated
n
Sleep mode (approximate)
3.3VDC @ 34 mA (113 mW)
n
Wake-up on EIRQ, Ethernet PHY off
n

Thermal specifications

The table below shows the standard operating temperature ranges for the entire Digi Connect ME
family of embedded modules.
Digi Connect ME, Wi-ME, ME 9210, Wi-ME 9210 Hardware Reference Manual
Power management (Digi Connect ME 9210 only)
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