M41ST87W_11 datasheet(3/54 Pages) STMICROELECTRONICS

Il numero della parte	M41ST87W

Spiegazioni elettronici	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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3 / 54 page

M41ST87Y, M41ST87W

Contents

Doc ID 9497 Rev 10

3/54

3.1

TIMEKEEPER® registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.2

Calibrating the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.3

Setting alarm clock registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.4

Watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.5

Square wave output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.6

Full-time 32 kHz square wave output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.7

Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.8

Reset inputs (RSTIN1 & RSTIN2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.9

Power-fail comparators (1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.10

Power-fail outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.11

Century bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.12

Output driver pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.13

Battery low warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.14

trec bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.15

Electronic serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.16

Oscillator stop detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.17

Initial power-on defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4

Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5

DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

7

Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

8

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Codice articolo simile - M41ST87W_11

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
STMicroelectronics	M41ST87WMX6	733Kb / 42P	5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
	M41ST87WMX6	461Kb / 48P	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
	M41ST87WMX6	695Kb / 52P	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
	M41ST87WMX6F	695Kb / 52P	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
	M41ST87WMX6TR	733Kb / 42P	5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection

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Descrizione simile - M41ST87W_11

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
STMicroelectronics	M41ST87Y	461Kb / 48P	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
	M41ST87Y	695Kb / 52P	5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
	M41ST87W	733Kb / 42P	5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
	M41ST85W	450Kb / 43P	3.0/3.3 V I2C combination serial RTC, NVRAM supervisor and microprocessor supervisor
	M41ST84W	302Kb / 34P	3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions
	M41ST85W	369Kb / 41P	3.0/3.3V I2C combination serial RTC, NVRAM supervisor and microprocessor supervisor
	M41ST85W	606Kb / 34P	3.0/3.3V I2C Combination Serial RTC, NVRAM Supervisor and Microprocessor Supervisor
	M41ST85Y	530Kb / 34P	5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR
	M41T11	231Kb / 30P	Serial real-time clock (RTC) with 56 bytes of NVRAM
	M41T56	483Kb / 27P	Serial real-time clock (RTC) with 56 bytes NVRAM

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M41ST87W Scheda tecnica(PDF) 3 Page - STMicroelectronics

M41ST87W Scheda tecnica(HTML) 3 Page - STMicroelectronics

Codice articolo simile - M41ST87W_11

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