PXD10 datasheet(56/130 Pages) FREESCALE

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Electrical characteristics

PXD10 Microcontroller Data Sheet, Rev. 1

Freescale Semiconductor

3.3

NVUSRO register

Portions of the device configuration, such as high voltage supply, oscillator margin, and watchdog

enable/disable after reset are controlled via bit values in the Nonvolatile User Options (NVUSRO) register.

For a detailed description of the NVUSRO register, please see the chip reference manual.

3.3.1

NVUSRO[PAD3V5V] field description

Table 10 shows how NVUSRO[PAD3V5V] controls the device configuration.

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

3.3.2

NVUSRO[OSCILLATOR_MARGIN] field description

Table 10 shows how NVUSRO[OSCILLATOR_MARGIN] controls the device configuration.

The 4–16 MHz fast external crystal oscillator consumption is dependent on the OSCILLATOR_MARGIN

bit value.

Table 10. PAD3V5V field description1

NOTES:

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

Value2

2 Default manufacturing value before Flash initialization is ‘1’ (3.3 V)

Description

High voltage supply is 5.0 V

High voltage supply is 3.3 V

Table 11. OSCILLATOR_MARGIN field description1

NOTES:

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

Value2

2 Default manufacturing value before Flash initialization is ‘1’

Description

Low consumption configuration (4 MHz/8 MHz)

High margin configuration (4 MHz/16 MHz)

PXD10 Datasheet(PDF) 56 Page - Freescale Semiconductor, Inc