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Electrical characteristics
ST72324B-Auto
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 91.
Oscillators, PLL and LVD current consumption
Symbol
Parameter
Conditions
Typ
Max
Unit
IDD(RCINT) Supply current of internal RC oscillator
625
A
IDD(RES)
Supply current of resonator oscillator(1)(2)
1.
Data based on characterization results done with the external components specified in
Section 12.6.3, not
tested in production.
2.
As the oscillator is based on a current source, the consumption does not depend on the voltage.
IDD(PLL)
PLL supply current
VDD = 5V
360
IDD(LVD)
LVD supply current
150
300
Table 92.
On-chip peripherals current consumption
Symbol
Parameter
Conditions
Typ
Unit
IDD(TIM) 16-bit timer supply current
(1)
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
50
A
IDD(SPI) SPI supply current
(2)
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)
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)
4.
Data based on a differential IDD measurement between reset configuration and continuous A/D
conversions.