STR730FZ1T7 datasheet(51/53 Pages) STMICROELECTRONICS

номер детали	STR730FZ1T7

подробное описание детали	ARM7TDMI 32-bit MCU with Flash, 3x CAN, 4 UARTs, 20 timers, ADC, 12 comm. interfaces

PDF	53 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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51 / 53 page

STR73xF

Known limitations

51/53

Known limitations

6.1

Low Power Wait For Interrupt mode

When the STR73x device is put in Low Power Wait For Interrupt mode (LPWFI), the Flash

goes into Low Power mode or Power Down mode, depending on the setting of the PWD bit

in the Flash Control Register 0 (default is ‘0’, Low Power mode). This default mode can

create excessive voltage conditions on the transistor gates and may affect the long term

behavior of the Low Power mode circuitry.

Workaround

There is no workaround. If Low Power Wait For Interrupt mode is used, it is strongly

suggested to configure the Flash to enter Power Down mode (bit PWD = ‘1’).

6.2

PLL free running mode at high temperature

When the STR73x device is operated and an ambient temperature (TA) of more than 55°C

and the main system clock (fMCLK) is sourced by the PLL in free running mode, the device

may not work properly.

Workaround

At high temperature (more than 55°C), it is recommended to use the internal RC oscillator

as a backup clock source rather than the PLL free running mode.

STR730FZ1T7 датащи(PDF) 51 Page - STMicroelectronics