STR73XF datasheet(26/53 Pages) STMICROELECTRONICS

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Electrical parameters

STR73xF

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3.3.1

Supply current characteristics

The current consumption is measured as described in Figure 6 and Figure 7.

Total current consumption

The MCU is placed under the following conditions:

●

All I/O pins in input mode with a static value at VDD or VSS (no load)

●

All peripherals are disabled except if explicitly mentioned.

Subject to general operating conditions for VDD, and TA.

Table 9.

Total Current consumption

Notes:

Typical data are based on TA=25°C, VDD=5V

Data based on characterization results, tested in production at VDD max. and TA = 25°C.

I/O in static configuration (not toggling). RUN mode is almost independent of temperature. On the

contrary RUN mode current is highly dependent on the application. The IDDRUN value can be

significantly reduced by the application in the following ways: switch-off unused peripherals (default),

reduce peripheral frequency through internal prescaler, fetch the most frequently-used functions from RAM

and use low power mode when possible.

Symbol

Parameter

Conditions

Typ 1)

Max 2) Unit

IDD

RUN mode3)

Formula, fMCLK in MHz, RAM execution

7 + 1.9 fMCLK

fMCLK=36 MHz, RAM execution

fMCLK=36 MHz, Flash execution

WFI mode

fOSC = 4 MHz, fMCLK= fOSC/16 = 250KHz

Main Voltage Regulator ON,

LP Voltage Regulator = 2mA,

RTC and WDG ON, Other modules off.

6.7

LPWFI mode

fRC = High Frequency (CMU_RCCTL= 0x8),

fMCLK= fRC /16, LP Voltage Regulator = 2mA,

Other modules off.

220

350

µA

STOP mode

fOSC = 4 MHz, RC oscillator ON

fRC = High Frequency (CMU_RCCTL= 0x0)

LP Voltage Regulator = 6mA,

RTC and WUT ON, Other modules off.

Internal wake-up possible.

500

700

µA

fRC = High Frequency (CMU_RCCTL= 0xF),

LP Voltage Regulator = 2mA.

WUT ON. Other modules off.

Internal wake-up possible.

150

220

LP Voltage Regulator = 2mA, WIU ON, Other

modules off,

External wake-up.

140

HALT mode

LP Voltage Regulator = 2mA.

140

µA

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