LQFP144 datasheet(57/133 Pages) STMICROELECTRONICS

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DocID15131 Rev 9

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SPC560B54x/6x

Electrical characteristics

132

For a detailed description of the NVUSRO register, please refer to the device reference

manual.

4.2.1

NVUSRO[PAD3V5V] field description

The DC electrical characteristics are dependent on the PAD3V5V bit value. Table 9 shows

how NVUSRO[PAD3V5V] controls the device configuration.

4.2.2

NVUSRO[OSCILLATOR_MARGIN] field description

The fast external crystal oscillator consumption is dependent on the

OSCILLATOR_MARGIN bit value. Table 10 shows how NVUSRO[OSCILLATOR_MARGIN]

controls the device configuration.

4.2.3

NVUSRO[WATCHDOG_EN] field description

The watchdog enable/disable configuration after reset is dependent on the

WATCHDOG_EN bit value. Table 11 shows how NVUSRO[WATCHDOG_EN] controls the

device configuration.

Table 9. PAD3V5V field description(1)

See the device reference manual for more information on the NVUSRO register.

Value(2)

Default manufacturing value is ‘1’. Value can be programmed by customer in Shadow Flash.

Description

High voltage supply is 5.0 V

High voltage supply is 3.3 V

Table 10. OSCILLATOR_MARGIN field description(1)

See the device reference manual for more information on the NVUSRO register.

Value(2)

Default manufacturing value is ‘1’. Value can be programmed by customer in Shadow Flash.

Description

Low consumption configuration (4 MHz/8 MHz)

High margin configuration (4 MHz/16 MHz)

Table 11. WATCHDOG_EN field description

Value(1)

Default manufacturing value is ‘1’. Value can be programmed by customer in Shadow Flash.

Description

Disable after reset

Enable after reset

LQFP144 데이터시트(PDF) 57 Page - STMicroelectronics