M41T256YMT7F datasheet(1/30 Pages) STMICROELECTRONICS

部件名	M41T256YMT7F

功能描述	256Kbit (32K x 8) serial RTC

PDF	30 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 30 page

Not For New Design

This is information on a product still in production but not recommended for new designs.

November 2007

Rev 5

1/30

1

M41T256Y

256Kbit (32K x 8) serial RTC

Features

■ 5V operating voltage

■ Serial interface supports extended I2C bus

addressing (400kHz)

■ Automatic switchover and deselect circuitry

■ Power-fail deselect voltages:

–M41T256Y: VCC = 4.5 V to 5.5V;

VPFD = 4.2V < VPFD < 4.5V

■ Counters for tenths/hundredths of seconds,

seconds, minutes, hours, day, date, month,

and year

■ Programmable software clock calibration

■ 32,752 bytes of general purpose RAM

■ Microprocessor power-on reset

■ Holds microprocessor in reset until supply

voltage reaches stable operating level

■ Automatic address-incrementing

■ Tamper indication circuit with time-stamp

■ Sleep mode function

■ Available in ST’s 44-lead SNAPHAT® SOIC -

mates with ST’s removable/replaceable

SNAPHAT® battery/crystal top (ordered

separately)

■ RoHS compliant

– Lead-free second level interconnect

44

1

SOH44 (MH)

SNAPHAT (SH)

crystal/battery

www.st.com

类似零件编号 - M41T256YMT7F

制造商	部件名	数据表	功能描述
STMicroelectronics	M41T256YMT7F	522Kb / 27P	256 Kbit 32K x8 SERIAL RTC Jun-2004

制造商	部件名	数据表	功能描述
STMicroelectronics	M41T256Y	522Kb / 27P	256 Kbit 32K x8 SERIAL RTC Jun-2004
ATMEL Corporation	AT24C32A	216Kb / 20P	2-Wire Serial EEPROM 32K (4096 x 8) 64K (8192 x 8)
Hanbit Electronics Co.,...	HMN328D	157Kb / 9P	Non-Volatile SRAM MODULE 256Kbit (32K x 8-Bit),28Pin DIP, 5V
ATMEL Corporation	AT24C32A	687Kb / 22P	Two-wire Serial EEPROM 32K (4096 x 8) 64K (8192 x 8)
STMicroelectronics	M48T35AV	250Kb / 28P	3.3V, 256Kbit (32Kbit x 8) TIMEKEEPER짰 SRAM 21-Nov-2007
	M48Z32V	181Kb / 19P	3.3V, 256Kbit (32Kbit x 8) ZEROPOWER SRAM 02-Nov-2007
	M48Z35	218Kb / 23P	256Kbit (32Kbit x 8) ZEROPOWER SRAM 02-Nov-2007
ATMEL Corporation	AT24C32C	812Kb / 28P	2-Wire Serial EEPROM 32K (4096 x 8) 64K (8192 x 8)
ATMEL Corporation	AT25320B	683Kb / 23P	SPI Serial EEPROMs 32K (4096 x 8) 64K (8192 x 8)
DLG Hanbit co.,Ltd.	HMN328D	476Kb / 7P	Non-Volatile SRAM MODULE 256Kbit (32K x 8-Bit),28Pin DIP, 5V