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參數(shù)資料
| 型號： | M48T18-100MH1TR |
| 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, PDSO28 |
| 封裝： | SNAPHAT, PLASTIC, SO-28 |
| 文件頁數(shù)： | 4/29頁 |
| 文件大?。?/td> | 184K |
| 代理商： | M48T18-100MH1TR |
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M48T08, M48T18
12/29
WRITE Mode
The M48T08/18 is in the WRITE Mode whenever
W, E1, and E2 are active. The start of a WRITE is
referenced from the latter occurring falling edge of
W or E1, or the rising edge of E2. A WRITE is ter-
minated by the earlier rising edge of W or E1, or
the falling edge of E2. The addresses must be held
valid throughout the cycle. E1 or W must return
high or E2 low for a minimum of tE1HAX or tE2LAX
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; however, if the output bus has
been activated by a low on E1 and G and a high
on E2, a low on W will disable the outputs tWLQZ
after W falls.
Figure 9. WRITE Enable Controlled, WRITE AC Waveform
AI00963
tAVAV
tWHAX
tDVWH
DATA INPUT
A0-A12
E1
W
DQ0-DQ7
VALID
E2
tAVWH
tAVE1L
tAVE2H
tWLWH
tAVWL
tWLQZ
tWHDX
tWHQX
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T18-100MH1 | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T18-150PC1 | 0 TIMER(S), REAL TIME CLOCK, PDIP28 |
| M48T08-100PC1 | 0 TIMER(S), REAL TIME CLOCK, PDIP28 |
| M48T08-150PC1 | 0 TIMER(S), REAL TIME CLOCK, PDIP28 |
| M48T18-100PC1 | 0 TIMER(S), REAL TIME CLOCK, PDIP28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T18-100PC1 | 功能描述:實時時鐘 64K (8Kx8) 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 時間格式:HH:MM:SS RTC 存儲容量: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 |
| M48T18-100PC1 | 制造商:STMicroelectronics 功能描述:SRAM TIMEKEEPER 64K 48T18 DIP28 |
| M48T18-100PC1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:64 Kbit 8Kb x 8 TIMEKEEPER SRAM |
| M48T18-100PC1F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:64 Kbit 8Kb x 8 TIMEKEEPER SRAM |
| M48T18-100PC1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CMOS 8K x 8 TIMEKEEPER SRAM |
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