M41ST87Y_10 datasheet(21/52 Pages) STMICROELECTRONICS

部件名	M41ST87Y

功能描述	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM

PDF	52 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

21 / 52 page

M41ST87Y, M41ST87W

Operating modes

Doc ID 9497 Rev 8

21/52

Figure 15.

Basic tamper detect options

Available in SOX28 (MX) package only.

Figure 16.

Tamper detect output options

Available in SOX28 (MX) package only.

AI07818

TAMPER LO,

NORMALLY OPEN

TAMPER HI,

NORMALLY CLOSED

User

Configuration

TCM

X, TPMX

IRQ - Interrupt the

processor on tamper

CLR - Clear external

RAM on tamper

(1)

CLR - Clear internal

RAM on tamper

Time stamp tamper

event

CLRX

EXT

TIE

CLRX

TAMPER HI,

NORMALLY OPEN

TAMPER LO,

NORMALLY CLOSED

Triggering Event

Tamper Event Output

TCMX, TPMX = 1,1

TCMX, TPMX = 0,0

TCMX, TPMX = 1,0

TCMX, TPMX = 0,1

VCC (VOUT)

AI07821

IRQ - Interrupt the

processor on tamper

User

Configuration

TPCLR - Clear external

RAM on tamper (1)

RESET OUT

CLR - Clear 128 bytes

internal RAM on tamper

Time stamp tamper

event (to RTC)

CLR1EXT

TIE1

CLR1

CLR2EXT

TIE2

CLR2

(other reset sources)

TEB2

TP2

TEB1

TP1

M41ST87Y 数据表(PDF) 21 Page - STMicroelectronics

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