M4T28-BR12SH datasheet(11/34 Pages) STMICROELECTRONICS

Numer części	M4T28-BR12SH

Szczegółowy opis	5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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M41ST85Y, M41ST85W

Figure 13. Alternate READ Mode Sequence

WRITE Mode

In this mode the master transmitter transmits to

the M41ST85Y/W slave receiver. Bus protocol is

shown in Figure 14., page 11. Following the

START condition and slave address, a logic '0' (R/

W=0) is placed on the bus and indicates to the ad-

dressed device that word address An will follow

and is to be written to the on-chip address pointer.

The data word to be written to the memory is

strobed in next and the internal address pointer is

incremented to the next memory location within

the RAM on the reception of an acknowledge

clock. The M41ST85Y/W slave receiver will send

an acknowledge clock to the master transmitter af-

ter it has received the slave address (see Figure

11., page 10) and again after it has received the

word address and each data byte.

Figure 14. WRITE Mode Sequence

AI00895

BUS ACTIVITY:

S

P

SDA LINE

BUS ACTIVITY:

MASTER

DATA n

DATA n+1

DATA n+X

SLAVE

ADDRESS

AI00591

BUS ACTIVITY:

S

P

SDA LINE

BUS ACTIVITY:

MASTER

DATA n

DATA n+1

DATA n+X

WORD

ADDRESS (An)

SLAVE

ADDRESS

Podobny numer części - M4T28-BR12SH

Producent	Numer części	Arkusz danych	Szczegółowy opis
STMicroelectronics	M4T28-BR12SH	231Kb / 29P	Serial Real Time Clock with 56 Bytes of NVRAM
	M4T28-BR12SH	139Kb / 16P	TIMEKEEPER짰 SNAPHAT짰 (battery and crystal)
	M4T28-BR12SH	433Kb / 31P	512 Bit 64 bit x8 SERIAL RTC SPI SRAM
ARTSCHIP ELECTRONICS CO...	M4T28-BR12SH	7Mb / 27P	TIMEKEEPER SRAM
STMicroelectronics	M4T28-BR12SH	511Kb / 29P	3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM

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Podobny opis - M4T28-BR12SH

Producent	Numer części	Arkusz danych	Szczegółowy opis
STMicroelectronics	M41ST95W	545Kb / 35P	5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor
	M41ST84Y	452Kb / 31P	5.0 or 3.0V, 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS
	M41ST87W	733Kb / 42P	5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
	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
	M41ST85W	450Kb / 43P	3.0/3.3 V I2C combination serial RTC, NVRAM supervisor and microprocessor supervisor
	M41T94	433Kb / 31P	512 Bit 64 bit x8 SERIAL RTC SPI SRAM
	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
	M41ST87W	787Kb / 54P	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

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