LQFP64 datasheet(40/116 Pages) STMICROELECTRONICS

40 / 116 page

Package pinouts and signal descriptions

SPC560B40x/50x, SPC560C40x/50x

40/116

DocID14619 Rev 13

In the tables where the external system must provide signals with their respective timing

characteristics to the device, the symbol “SR” for System Requirement is included in the

Symbol column.

Caution:

All LQFP64 information is indicative and must be confirmed during silicon validation.

3.10

Parameter classification

The electrical parameters shown in this supplement are guaranteed by various methods. To

give the customer a better understanding, the classifications listed in Table 8 are used and

the parameters are tagged accordingly in the tables where appropriate.

Note:

The classification is shown in the column labeled “C” in the parameter tables where

appropriate.

3.11

NVUSRO register

Bit values in the Non-Volatile User Options (NVUSRO) Register control portions of the

device configuration, namely electrical parameters such as high voltage supply and

oscillator margin, as well as digital functionality (watchdog enable/disable after reset).

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

manual.

3.11.1

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.

Table 8. Parameter classifications

Classification tag

Tag description

Those parameters are guaranteed during production testing on each individual device.

Those parameters are achieved by the design characterization by measuring a statistically

relevant sample size across process variations.

Those parameters are achieved by design characterization on a small sample size from typical

devices under typical conditions unless otherwise noted. All values shown in the typical

column are within this category.

Those parameters are derived mainly from simulations.

Table 9. PAD3V5V field description

Value(1)

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

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