了解直流电气特性的微控制器-Understanding DC

文章摘要：PARAMETERSYMBOLMINTYPMAXUNITSNOTESSupply Current Idle Mode at 25MHzIIDLE1525mA3When idle mode is invoked by software, internal clocks, serial ports, and timers will remain running. However, no memory access is performed in this mode. As stated earlier, power consumption is related to crystal frequen

了解直流电气特性的微控制器-Understanding DC,标签：计算机控制技术,工厂电气控制技术,http://www.88dzw.com

PARAMETER	SYMBOL	MIN	TYP	MAX	UNITS	NOTES
Supply Current Idle Mode at 25MHz	IIDLE		15	25	mA	3

When idle mode is invoked by software, internal clocks, serial ports, and timers will remain running. However, no memory access is performed in this mode. As stated earlier, power consumption is related to crystal frequency. Idle mode current is a function of the crystal frequency in the final circuit design. The supply current in idle mode is measured the same way as the supply current in active mode, except the RST pin is grounded.

PARAMETER	SYMBOL	MIN	TYP	MAX	UNITS	NOTES
Supply Current Stop Mode, Bandgap Reference Disabled	ISTOP		0.01	1	µA	4

Stop mode provides lower power consumption than idle mode due to the halting of all clock operations. To achieve even more power reduction, the bandgap reference can be disabled by software. This is the default state for stop mode. This current is measured the same way as active and idle modes, except there is no clock source. The XTAL1 pin and RST pin is grounded, VCC is 5.5V and all other pins are disconnected.

PARAMETER	SYMBOL	MIN	TYP	MAX	UNITS	NOTES
Supply Current Stop Mode, Bandgap Reference Enabled	ISPBG		50	80	µA	4, 10

When stop mode is invoked, it puts the microcontroller into the lowest power state. A static condition exists, whereas timers and serial communications are stopped and processing is halted. To exit stop mode, a power-fail interrupt or a non-clocked external interrupt can be used. The bandgap reference must be enabled if a power-fail interrupt is used to exit stop mode. In this case, supply current is higher due to the current requirements of the bandgap reference circuit. The DS80C320 typically draws 50µA in this condition and 80µA maximum. Notes 4 and 10 state XTAL1 and RST pins are grounded, VCC is 5.5V and if the device is used over the industrial temperature range, the maximum current could be as high as 200µA.

PARAMETER	SYMBOL	MIN	TYP	MAX	UNITS	NOTES
Input Low Level	VIL	-0.3		+0.8	V	1

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