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S3C2440A RISC MICROPROCESSOR ELECTRICAL DATA
27-7
400Mhz Power consumption
88mW87mW
139mW
68mW
0
50
100
150
200
250
DVS(o) DVS(x)
Item
Power[mW]
Core Power
104% Up
Total Power
46% Up
Core Power
IO Power
155mW
227mW
Using DVS without DVS
NOTE: (Condition) Current measure condition: Play Battlife.wma(bit rate=64kbps) on PPC2003 SMDK2440.
Core power:
Without DVS : VDDiarm/VDDi/VDDupll/VDDmpll/VDDalive = 1.3V
using DVS : VDDiarm/VDDi = 1.3V 1.0V, others 1.3V fixed.
I/O Power : VDDOP/VDDMOP/VDDRTC/VDDADC=3.3V
Refer the Application notes for more information about DVS.
Figure 27-1 Power consumption comparison when applied DVS Scheme
Table 27-6 Typical Current Decrease by CLKCON Register
FCLK:HCLK:PCLK=300:100:50MHz, 1.2V(Random sample)
(Unit: mA)
Peripherals NFC LCD USBH USBD Timer SDI UART RTC ADC IIC IIS SPI Camera Total
Current
1.7 2.8 0.37 0.79 0.32 1.0 2.7 0.45 0.26 0.32 0.78 0.16 14.25 26.26
NOTE: This table includes power consumption of each peripheral. For example, If you do not use Camera and have turned
off the Camera block by CLKCON register, then you can save the 14.25mA of internal block.