M41ST87YMX6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M41ST87YMX6TR

5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection

STMicroelectronics 

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Figure 15. Tamper Detect Output Options

User

Configuration

M41ST87Y, M41ST87W

TIE1

CLR1EXT

TP1

TEB1

CLR1

TP2

TEB2

TIE2

CLR2EXT

CLR2

(other reset sources)

IRQ - Interrupt the

processor on tamper

TPCLR - Clear external

RAM on tamper

RESET OUT

CLR - Clear 128 bytes

internal RAM on tamper

Time stamp tamper

event (to RTC)

AI07821

Figure 16. Basic Tamper Detect Options

VCC (VOUT)

TCMX, TPMX = 1,1

Triggering Event

TCMX, TPMX = 0,0

TAMPER HI,

NORMALLY OPEN

VCC (VOUT)

TAMPER LO,

NORMALLY CLOSED

TCMX, TPMX = 1,0

TAMPER LO,

NORMALLY OPEN

VCC (VOUT)

TCMX, TPMX = 0,1

TAMPER HI,

NORMALLY CLOSED

Tamper Event Output

TIEX

IRQ - Interrupt the

processor on tamper

User

Configuration

CLRXEXT

TPCLR - Clear external

RAM on tamper

TCMX, TPMX

CLRX

CLR - Clear internal

RAM on tamper

Time stamp tamper

event

AI07818

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