10.3 Device Power Consumption in Applicative Use Cases

Table 10-4 provides the processor power consumption in the following conditions:

f_{CPU_CLK} = 800 MHz
f_MCK = 266 MHz
I & D caches are enabled.
Use cases run on Linux^®.
Current consumptions are measured as shown in Figure 10-1. Note that external component current consumptions are not counted.
Ambient temperature: 25°C

The measurements are provided for typical SAM9X75D1G and SAM9X75D2G devices.

Figure 10-1. Current Measurement for Applicative Use Cases (DDR3L Example)

Table 10-3. Use Case Definition
Use Case	Description
1	After Linux boot root prompt
2	Running 2D graphics benchmark with EGT monitor (800x480 DSI panel @ 46 fps) - 22% CPU usage
3	Run Bonnie++ on USB mass storage
4	SAM9X75 running as iPerf server
5	Image sensor video recording with QVGA resolution - 10 fps

Table 10-4. Power Consumption (mW) in Applicative Use Cases
Use Case	VDDCORE 1.15V	VDDIOM+DDRM_VDD		VDDIN33 3.30V	Total (DDR3L)	Total (DDR2)
Use Case	VDDCORE 1.15V	1.35V	1.80V	VDDIN33 3.30V	Total (DDR3L)	Total (DDR2)
1	135	41	45	165	341	345
2	165	55	60	125	345	350
3	190	84	57	115	389	362
4	165	95	108	165	425	438
5	170	61	–	330	561	–

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