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参数资料
| 型号： | M48T35-70PC1 |
| 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, PDIP28 |
| 封装： | 0.600 INCH, CAPHAT, ROHS COMPLIANT, PLASTIC, DIP-28 |
| 文件页数： | 30/30页 |
| 文件大小： | 256K |
| 代理商： | M48T35-70PC1 |
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M48T35 M48T35Y
Operation modes
If the address inputs are changed while E and G remain active, output data will remain valid
for output data hold time (tAXQX) but will go indeterminate until the next address access.
Figure 5.
Read mode AC waveforms
Note:
WRITE enable (W) = high.
Table 3.
Read mode AC characteristics
2.2
Write mode
The M48T35/Y 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
Symbol
Parameter(1)
1.
Valid for ambient operating temperature: TA = 0 to 70 or –40 to 85°C; VCC = 4.75 to 5.5 V or 4.5 to 5.5 V (except where
noted).
M48T35/Y
Unit
Min
Max
tAVAV
READ cycle time
70
ns
tAVQV
Address valid to output valid
70
ns
tELQV
Chip enable low to output valid
70
ns
tGLQV
Output enable low to output valid
35
ns
tELQX
(2)
2.
CL = 5 pF.
Chip enable low to output transition
5
ns
tGLQX
Output enable low to output transition
5
ns
tEHQZ
Chip enable high to output Hi-Z
25
ns
tGHQZ
Output enable high to output Hi-Z
25
ns
tAXQX
Address transition to output transition
10
ns
AI00925
tAVAV
tAVQV
tAXQX
tELQV
tELQX
tEHQZ
tGLQV
tGLQX
tGHQZ
VALID
A0-A14
E
G
DQ0-DQ7
VALID
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PDF描述 |
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| M48T35Y-70MH1E | 0 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T36Y-70MH1TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M48T35-70PC1E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
| M48T35-70PC1F | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
| M48T35-70PC1TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T35-70PC6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T35-70PC6E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
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