STM1403ASOQ6F datasheet(9/34 Pages) STMICROELECTRONICS

部件名	STM1403ASOQ6F

功能描述	3 V FIPS-140 security supervisor with battery switchover

PDF	34 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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9 / 34 page

STM1403

Description

9/35

Figure 4.

Hardware hookup

Normal mode: low when VOUT is internally switched to VCC and high when VOUT is internally switched to

battery.

Capacitor (C) is typically

≥ 10 µF.

Open drain

Diode is required for battery reverse charge protection.

VREF only for STM1403; VTPU for STM1403B/C.

Figure 5.

Tamper pin (TP1 or TP3) normally high (NH) external hookup (switch

closed)

R typical is 10 M

Ω. Resistors must be protected against conductive materials.

VCC

AI09690

VCC

VOUT

VREF

(5)

VTPU

VCCSW

(1)

VCC

LPSRAM

PFI

(2)

0.1

μF

1.0

μF

STM1403

PFO

(3)

RST

(3)

BLD

(3)

To Microprocessor Reset

Unregulated

Voltage

Regulator

VCC

VIN

Push-Button

From Actuator Device

(e.g., Switches, Wire Mesh)

BAT54J

(4)

VBAT

TP1

TP2

TP3

TP4

To Microprocessor NMI

To Microprocessor

SAL

(3)

To Physical Tamper Pins TPX

To ADC

AI09698

VOUT (STM1403A)

VTPU (STM1403B/C)

(1)

Switch Normally Closed;

Tamper Detection on Open

TP1 or TP3

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