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参数资料
| 型号： | M48T37Y-70MH6TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| 封装： | 0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44 |
| 文件页数： | 2/30页 |
| 文件大小： | 515K |
| 代理商： | M48T37Y-70MH6TR |
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Operation modes
M48T37Y, M48T37V
Doc ID 7019 Rev 9
2.2
WRITE mode
The M48T37Y/V is in the WRITE mode whenever W and E are low. 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; however, 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 enable controlled, WRITE AC waveform
Figure 6.
Chip enable controlled, WRITE AC waveforms
AI00926
tAVAV
tWHAX
tDVWH
DATA INPUT
A0-A14
E
W
DQ0-DQ7
VALID
tAVWH
tAVEL
tWLWH
tAVWL
tWLQZ
tWHDX
tWHQX
AI00927
tAVAV
tEHAX
tDVEH
A0-A14
E
W
DQ0-DQ7
VALID
tAVEH
tAVEL
tAVWL
tELEH
tEHDX
DATA INPUT
相关PDF资料 |
PDF描述 |
|---|---|
| M48T37Y-70MH1E | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T37V-10MH1E | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T37Y-70MH6 | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T37Y-70MH1TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T37V-10MH6TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M48T37YMH | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T37YSH | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T39Y | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kb 32K x8 TIMEKEEPER SRAM |
| M48T39Y-100PM1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kb 32K x8 TIMEKEEPER SRAM |
| M48T39Y-150PM1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kb 32K x8 TIMEKEEPER SRAM |
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