參數(shù)資料
型號(hào)： M48T251Y-70PM1
廠商： STMICROELECTRONICS
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 0 TIMER(S), REAL TIME CLOCK, PDIP32
封裝： PLASTIC, MODULE, DIP-32
文件頁(yè)數(shù)： 19/24頁(yè)
文件大?。?/td> 366K
代理商： M48T251Y-70PM1
M48T251Y, M48T251V
4/24
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 solu-
tion. 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.
The clock keeps track of tenths/hundredths of sec-
onds, seconds, minutes, hours, day, date, month,
and year information. The last day of the month is
automatically adjusted for months with less than
31 days, including leap year correction.
The clock operates in one of two formats:
–
a 12-hour mode with an AM/PM indicator;
or
–
a 24-hour mode
The M48T251Y/V is a 32-pin (PM) DIP module
that integrates the RTC, the battery, and SRAM in
one package.
The modules are shipped in plastic, anti-static
Figure 2. Logic Diagram
Table 1. Signal Names
A0-A18
VSS
DQ0-D7
M48T251Y
M48T251V
VCC
RST
WE
OE
CE
AI04237
A0–A18
Address Input
RST
Reset Input
CE
Chip Enable
OE
Output Enable Input
WE
WRITE Enable Input
DQ0–DQ7
Data Inputs/Outputs
VCC
Supply Voltage Input
VSS
Ground
相關(guān)PDF資料
PDF描述
M48T35Y-70PC6 0 TIMER(S), REAL TIME CLOCK, PDIP28
M5M80C85AP-2 8-BIT, 5 MHz, MICROPROCESSOR, PDIP40
M5M82C55AFP-2 24 I/O, PIA-GENERAL PURPOSE, PDSO40
M5M82C55AP-2 24 I/O, PIA-GENERAL PURPOSE, PDIP40
M5M82C55AJ-2 24 I/O, PIA-GENERAL PURPOSE, PQCC44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M48T251Y-70PM1TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM
M48T251Y-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
M48T251Y-85PM1TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM
M48T251YPM 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM
M48T254V-10ZA1 功能描述:實(shí)時(shí)時(shí)鐘 16M (2Mx8) 100ns RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*