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M48T251V-85PM1規(guī)格書詳情
SUMMARY DESCRIPTION
The M48T251Y/V TIMEKEEPER? RAM is a 512Kbit x 8 non-volatile static RAM and real time clock organized as 524,288 words by 8 bits. The special DIP package provides a fully integrated battery back-up memory and real time clock solution. In the event of power instability or absence, a self-contained battery maintains the timekeeping operation and provides power for a CMOS static RAM. Control circuitry monitors VCC and invokes write protection to prevent data corruption in the memory and RTC.
FEATURES SUMMARY
■ 5.0V OR 3.3V OPERATING VOLTAGE
■ REAL TIME CLOCK KEEPS TRACK OF TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAYS, DATE OF THE MONTH, MONTHS, AND YEARS
■ AUTOMATIC LEAP YEAR CORRECTION VALID UP TO THE YEAR 2100
■ AUTOMATIC SWITCH-OVER AND DESELECT CIRCUITRY
■ CHOICE OF POWER-FAIL DESELECT VOLTAGES: (VPFD = Power-fail Deselect Voltage):
– M48T251Y: 4.25V ≤ VPFD ≤ 4.50V
– M48T251V: 2.80V ≤ VPFD ≤ 2.97V
■ FULL 10 VCC OPERATING RANGE
■ OVER 10 YEARS’ DATA RETENTION IN THE ABSENCE OF POWER
■ WATCH FUNCTION IS TRANSPARENT TO RAM OPERATION
■ 512K x 8 NV SRAM DIRECTLY REPLACES VOLATILE STATIC RAM OR EEPROM
產(chǎn)品屬性
- 型號:
M48T251V-85PM1
- 制造商:
STMICROELECTRONICS
- 制造商全稱:
STMicroelectronics
- 功能描述:
5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM
供應商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
ST |
24+ |
DIP |
9 |
詢價 | |||
ST |
25+ |
SSOP |
18000 |
全新原裝 |
詢價 | ||
ST/意法 |
23+ |
DIP-32 |
13000 |
原廠授權(quán)一級代理,專業(yè)海外優(yōu)勢訂貨,價格優(yōu)勢、品種 |
詢價 | ||
ST |
23+ |
DIP |
16900 |
正規(guī)渠道,只有原裝! |
詢價 | ||
ST |
2447 |
SSOP |
100500 |
一級代理專營品牌!原裝正品,優(yōu)勢現(xiàn)貨,長期排單到貨 |
詢價 | ||
ST |
24+ |
SOP28 |
16500 |
進口原裝正品現(xiàn)貨 |
詢價 | ||
ST |
24+ |
32-DIP |
28500 |
授權(quán)代理直銷,原廠原裝現(xiàn)貨,假一罰十,特價銷售 |
詢價 | ||
ST |
21+ |
DIP |
23480 |
詢價 | |||
ST |
22+ |
32PMDIP |
9000 |
原廠渠道,現(xiàn)貨配單 |
詢價 | ||
STMicroelectronics |
24+ |
32-PMDIP |
35200 |
一級代理/放心采購 |
詢價 |