參數(shù)資料
型號(hào)： M48T512V-85PM1
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： ROHS COMPLIANT, PLASTIC, DIP-32
文件頁(yè)數(shù)： 23/23頁(yè)
文件大小： 370K
代理商： M48T512V-85PM1
M48T512Y, M48T512V
Operating modes
Doc ID 5747 Rev 6
2.2
WRITE mode
The M48T512Y/V is in the WRITE mode whenever W (WRITE enable) and E (chip enable)
are low state after the address inputs are stable.
The start of a WRITE is referenced from the latter occurring falling edge of W or E. A WRITE
is terminated by the earlier rising edge of W or E. The addresses must be held valid
throughout the cycle. E or W must return high for a minimum of tEHAX from chip enable or
tWHAX from WRITE enable prior to the initiation of another READ or WRITE cycle. Data-in
must be valid tDVWH prior to the end of WRITE and remain valid for tWHDX afterward. G
should be kept high during WRITE cycles to avoid bus contention; although, if the output bus
has been activated by a low on E and G a low on W will disable the outputs tWLQZ after W
falls.
Figure 5.
WRITE AC waveforms, WRITE enable controlled
Figure 6.
WRITE AC waveforms, chip enable controlled
AI02386
tAVAV
tWHAX
tDVWH
DATA INPUT
A0-A18
E
W
DQ0-DQ7
VALID
tAVWH
tAVEL
tWLWH
tAVWL
tWLQZ
tWHDX
tWHQX
AI02387
tAVAV
tEHAX
tDVEH
A0-A18
E
W
DQ0-DQ7
VALID
tAVEH
tAVEL
tAVWL
tELEH
tEHDX
DATA INPUT
相關(guān)PDF資料
PDF描述
M48T512V-70PM1 REAL TIME CLOCK, PDIP32
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M48T513Y-70PM1 0 TIMER(S), REAL TIME CLOCK, PDIP36
M48T513V-85PM1 0 TIMER(S), REAL TIME CLOCK, PDIP36
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M48T512VPM 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 4 Mbit 512Kb x8 TIMEKEEPER SRAM
M48T512Y 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 4 Mbit 512Kb x8 TIMEKEEPER SRAM
M48T512Y_10 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V, 4 Mbit (512 Kbit x 8) TIMEKEEPER? SRAM
M48T512Y-70PM1 功能描述:實(shí)時(shí)時(shí)鐘 4M (512Kx8) 70ns 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
M48T512Y-70PM1 制造商:STMicroelectronics 功能描述:NVRAM 10 YR BATTERY 4MB 48T512
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