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參數(shù)資料
| 型號： | M48T128Y-85PM1TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDIP32 |
| 封裝： | 0.600 INCH, PLASTIC, MODULE, DIP-32 |
| 文件頁數(shù)： | 21/22頁 |
| 文件大?。?/td> | 373K |
| 代理商： | M48T128Y-85PM1TR |
M48T128Y, M48T128V*
8/22
WRITE Mode
The M48T128Y/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 termi-
nated by the earlier rising edge of W or E. The ad-
dresses 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 6. WRITE Enable Controlled, WRITE AC Waveform
Figure 7. Chip Enable Controlled, WRITE AC Waveforms
AI02382
tAVAV
tWHAX
tDVWH
DATA INPUT
A0-A16
E
W
DQ0-DQ7
VALID
tAVWH
tAVEL
tWLWH
tAVWL
tWLQZ
tWHDX
tWHQX
AI02383
tAVAV
tEHAX
tDVEH
A0-A16
E
W
DQ0-DQ7
VALID
tAVEH
tAVEL
tAVWL
tELEH
tEHDX
DATA INPUT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T128YPM | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V-70CS1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V-70PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V, 1 Mbit (128 Kbit x 8) TIMEKEEPER SRAM |
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