Datasheet

Electrical characteristics STM32H743xI
102/226 DocID030538 Rev 3
6.3.6 Supply current characteristics
The current consumption is a function of several parameters and factors such as the
operating voltage, ambient temperature, I/O pin loading, device software configuration,
operating frequencies, I/O pin switching rate, program location in memory and executed
binary code.
The current consumption is measured as described in Figure 14: Current consumption
measurement scheme.
All the run-mode current consumption measurements given in this section are performed
with
a CoreMark code.
Typical and maximum current consumption
The MCU is placed under the following conditions:
• All I/O pin
s are in analog input mode.
• All peripherals are disabled except when explicitly mentioned.
• The Flash memory access time is adjusted with the minimum wait states number,
depending on the f
ACLK
frequency (refer to the table “Number of wait states according to
CPU clock (ACLK) frequency and V
CORE
range” available in the reference manual).
• When the peripherals are enabled, the AHB clock frequency is the CPU frequency
divided by 2 and the APB clock frequency is AHB clock frequency divided by 2.
The parameters given in Table 29 to Table 37 are derived from tests performed under
ambient temperature and supply voltage conditions summarized in Table 23: General
operating conditions.
V
REFINT_DIV1
1/4 reference voltage - - 25 -
%
V
REFINT
V
REFINT_DIV2
1/2 reference voltage - - 50 -
V
REFINT_DIV3
3/4 reference voltage - - 75 -
1. The shortest sampling time for the application can be determined by multiple iterations.
2. Guaranteed by design.
Table 27. Embedded reference voltage (continued)
Symbol Parameter Conditions Min Typ Max Unit
Table 28. Internal reference voltage calibration values
Symbol Parameter Memory address
V
REFIN_CAL
Raw data acquired at temperature of 30 °C, V
DDA
= 3.3 V 1FF1E860 - 1FF1E861
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