M41ST87YMX6 datasheet(34/42 Pages) STMICROELECTRONICS

Part #	M41ST87YMX6

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

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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34 / 42 page

M41ST87Y, M41ST87W

34/42

Table 13. Default Values

Note: All other control bits are undetermined.

Note: 1. UC = Unchanged.

⇑ = V

CC rising; ⇓ = VCC falling.

3. When TEBX is set to '1,' the HT Bit will not be set on power-down (Tamper Time-Stamp will have precedence).

4. WDS, BMB0-BMB4, RB0, RB1.

5. 32kHz output valid only on VCC.

Condition

OFIE

HT(3)

Out

AFE

Initial Power-up

00101100

Subsequent Power-up (with

battery back-up)(1,2)

⇑

⇓

⇑

Condition

ABE

SQWE

SQWOD

PFOD

WATCHDOG Register(4)

Initial Power-up

0011

Subsequent Power-up (with

battery back-up)(1,2)

⇑

⇓

Condition

32kE

THS

TEB1 and 2

TCM1 and 2

TPM1 and 2

TDS1 and 2

Initial Power-up

1(5)

00000

Subsequent Power-up (with

battery back-up)(1)

Condition

TCHI/TCLO1

and 2

CLR1 and 2

TIE1 and 2

CLRPW0

CLRPW1

CLR1EXT

and

CLR2EXT

Initial Power-up

000000

Subsequent Power-up (with

battery back-up)(1)

⇑

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