STM32F730V8 datasheet(200/202 Pages) STMICROELECTRONICS

200 / 202 page

Recommendations when using internal reset OFF

STM32F730x8

200/202

DS12536 Rev 2

Appendix A

Recommendations when using internal reset

OFF

When the internal reset is OFF, the following integrated features are no longer supported:

•

The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled.

•

The brownout reset (BOR) circuitry must be disabled.

•

The embedded programmable voltage detector (PVD) is disabled.

•

VBAT functionality is no more available and VBAT pin should be connected to VDD.

•

The over-drive mode is not supported.

A.1

Operating conditions

Table 122. Limitations depending on the operating power supply range

Operating

power

supply

range

ADC

operation

Maximum

Flash

memory

access

frequency

with no wait

states

(fFlashmax)

Maximum Flash

memory access

frequency with

wait states (1)(2)

1. Applicable only when the code is executed from Flash memory. When the code is executed from RAM, no

wait state is required.

2. Thanks to the ART accelerator on ITCM interface and L1-cache on AXI interface, the number of wait states

given here does not impact the execution speed from the Flash memory since the ART accelerator or L1-

cache allows to achieve a performance equivalent to 0-wait state program execution.

I/O operation

Possible Flash

memory

operations

VDD =1.7 to

2.1 V(3)

3. VDD/VDDA minimum value of 1.7 V, with the use of an external power supply supervisor (refer to

Section 3.15.1: Internal reset ON).

Conversion

time up to

1.2 Msps

20 MHz

180 MHz with 8

wait states and

over-drive OFF

– No I/O

compensation

8-bit erase and

program

operations only

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