STR720 datasheet(379/401 Pages) STMICROELECTRONICS

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STR720 - ELECTRICAL CHARACTERISTICS

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28.6 Supply Current Characteristics

Measurements are done in the following conditions:

– Program executed from internal RAM, CPU running with RAM access.

– In RUN mode measurement all internal peripherals are clocked but not used. A-APB clock

runs at half AHB clock frequency. In all other mode measurements all peripherals are

switched off.

– All I/O pins in input mode with a static value at VDD3 or VSS (no load).

– PLL switched off (for PLL current characteristics see section 28.10 on page 387).

This implies that I/O related current is not considered in these figures.

VDD(all) = 1.80 V ± 10%, VDD3(all) = 3.30 V ± 10%, TA = -40 / +85 °C unless otherwise specified.

Data based on design characterization performed on sample devices, not tested in production.

Following Figure 74 illustrates the dependency between system clock frequency in MHz and

VDD current consumption in mA, measured in typical conditions and in the indicated range.

Table 92. Current consumption characteristics

Symbol

Parameter

Test Conditions(1)

Value

Unit

Min

Typ

Max

IDD_RUN

VDD RUN Mode current

@70 MHz System Clock

IDD_IDLE

VDD IDLE Mode current

@1.6 MHz System Clock

1.25

IDD_SLP

VDD SLOW Mode current

@32 kHz System Clock

µA

IDD_STP

VDD STOP Mode current

@0 MHz System Clock

µA

IDDRTC

VDDRTC all modes current

@32 kHz RTC Clock

µA

ISTB

STANDBY Mode current

0 V for the system and IO

power supply, 1.8 V for RTC

running on 32 kHz oscillator

-3.5

µA

IDD(f)

VDD current function

(1)

System clock frequency f be-

tween 10 and 25 MHz.

0.706 fSYS

- 2.229

-mA

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