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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)： | 2/29頁 |
| 文件大?。?/td> | 184K |
| 代理商： | M48T18-100MH1TR |
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M48T08, M48T18
10/29
READ Mode
The M48T08/18 is in the READ Mode whenever W
(WRITE Enable) is high, E1 (Chip Enable 1) is low,
and E2 (Chip Enable 2) is high. The device archi-
tecture allows ripple-through access of data from
eight of 65,536 locations in the static storage ar-
ray. Thus, the unique address specified by the 13
address inputs defines which one of the 8,192
bytes of data is to be accessed. Valid data will be
available at the Data I/O pins within address ac-
cess time (tAVQV) after the last address input sig-
nal is stable, providing that the E1, E2, and G
access times are also satisfied. If the E1, E2 and
G access times are not met, valid data will be
available after the latter of the Chip Enable Access
times (tE1LQV or tE2HQV) or Output Enable Access
time (tGLQV).
The state of the eight three-state Data I/O signals
is controlled by E1, E2 and G. If the outputs are ac-
tivated before tAVQV, the data lines will be driven to
an indeterminate state until tAVQV. If the address
inputs are changed while E1, E2 and G remain ac-
tive, output data will remain valid for Output Data
Hold time (tAXQX) but will go indeterminate until the
next address access.
Figure 8. READ Mode AC Waveforms
Note: WRITE Enable (W) = High.
AI00962
tAVAV
tAVQV
tAXQX
tE1LQV
tE1LQX
tE1HQZ
tGLQV
tGLQX
tGHQZ
VALID
A0-A12
E1
G
DQ0-DQ7
tE2HQV
tE2HQX
VALID
tE2LQZ
E2
相關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 |
相關代理商/技術參數(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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