SPC574K72E5 datasheet(76/127 Pages) STMICROELECTRONICS

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Electrical characteristics

SPC574Kxx

76/127

DocID023601 Rev 5

During power-up, all functional terminals are maintained in a known state as described in the

following table.

3.16

Flash memory electrical characteristics

Table 40 shows the estimated Program/Erase characteristics.

ADC performance is not guaranteed when ALTREFn, and VDD_HV_ADR supplies are above VDD_HV_IO/VDD_HV_ADV.

Table 39. Functional terminals state during power-up and reset

TERMINAL

type(1)

POWER-UP(2)

pad state

RESET

pad state

DEFAULT

pad state

(3)

Comments

PORST

Strong pull-

down(4)

Weak pull-down

Power-on reset pad

ESR0(5)

Strong pull-down

Weak pull-up

Functional reset pad

ESR1

Weak pull-up

—

TEST_MODE

Weak pull-down

Weak pull-down(6)

—

GPIO

Weak pull-up(4)

Weak pull-up

—

ANALOG

High impedance

—

ERROR[0]

High impedance

During functional reset, pad state

can be overridden by FCCU

TRST

High impedance

Weak pull-down

—

TCK

High impedance

Weak pull-down

—

TMS

Weak pull-up

—

TDI

Weak pull-up

—

TDO

High impedance

—

Refer to pinout information for terminal type.

POWER-UP state is guaranteed from VDD_HV_IO > VDD_POR and maintained until supply crosses the power-on reset

thresholds VPORUP_LV for LV supply and VPORUP_HV for high voltage supply.

Before software configuration.

Pull-down and pull-up strengths are provided in Table 15 (I/O pull-up/pull-down DC electrical characteristics)

Unlike ESR0, ESR1 is provided as a normal GPIO and implements weak pull-up during power-up.

An internal pull-down is implemented on the TESTMODE pin to prevent the device from entering test mode if the package

TESTMODE pin is not connected. It is recommended to connect the TESTMODE pin to VSS_HV_IO on the board for

maximum robustness, but not required. The value of TESTMODE is latched at the negation of reset and has no affect

afterward. The device will not exit functional reset with the TESTMODE pin asserted during power-up. The TESTMODE pin

can be connected externally directly to ground without any other components.

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