ST72324BK datasheet(143/188 Pages) STMICROELECTRONICS

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ST72324B

Electrical characteristics

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12.5.3

Supply and clock managers

The previous current consumption specified for the ST7 functional operating modes over

temperature range does not take into account the clock source current consumption. To

obtain the total device consumption, the two current values must be added (except for Halt

mode).

12.5.4

On-chip peripherals

Table 90.

Oscillators, PLL and LVD current consumption

Symbol

Parameter

Conditions

Typ

Max

Unit

IDD(RCINT) Supply current of internal RC oscillator

625

µA

IDD(RES)

Supply current of resonator oscillator(1)(2)

Data based on characterization results done with the external components specified in Section 12.6.3, not

tested in production.

As the oscillator is based on a current source, the consumption does not depend on the voltage.

see Section 12.6.3

on page 145

IDD(PLL)

PLL supply current

VDD = 5V

360

IDD(LVD)

LVD supply current

150

300

Table 91.

On-chip peripherals current consumption

Symbol

Parameter

Conditions

Typ

Unit

IDD(TIM) 16-bit timer supply current

(1)

Data based on a differential IDD measurement between reset configuration (timer counter running at

fCPU/4) and timer counter stopped (only TIMD bit set). Data valid for one timer.

TA = 25°C, fCPU = 4 MHz, VDD =5.0V

µA

IDD(SPI) SPI supply current

(2)

Data based on a differential IDD measurement between reset configuration (SPI disabled) and a permanent

SPI master communication at maximum speed (data sent equal to 55h). This measurement includes the

pad toggling consumption.

400

IDD(SCI) SCI supply current

(3)

Data based on a differential IDD measurement between SCI low power state (SCID = 1) and a permanent

SCI data transmit sequence.

IDD(ADC) ADC supply current when converting

(4)

Data based on a differential IDD measurement between reset configuration and continuous A/D

conversions.

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