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參數(shù)資料
| 型號： | M48T128V-85CS1 |
| 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, PDSO44 |
| 封裝： | PLASTIC, SO-44 |
| 文件頁數(shù)： | 25/30頁 |
| 文件大?。?/td> | 162K |
| 代理商： | M48T128V-85CS1 |
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M48T129Y, M48T129V
4/30
DESCRIPTION
The M48T129Y/V TIMEKEEPER RAM is a
128Kb x 8 non-volatile static RAM and real-time
clock with programmable alarms and a watchdog
timer. The special DIP package provides a fully in-
tegrated battery back-up memory and real-time
clock solution. The M48T129Y/V directly replaces
industry standard 128Kb x 8 SRAM. It also pro-
vides the non-volatility of Flash without any re-
quirement for special WRITE timing or limitations
on the number of WRITEs that can be performed.
For surface mount environments ST provides a
Chip Set solution consisting of a 44-pin, 330mil
SOIC TIMEKEEPER Supervisor (M48T201V/Y)
and a 32-pin TSOP (8 x 20mm) LPSRAM
(M68Z128/W) packages.
The 44-pin, 330mil SOIC provides sockets with
gold plated contacts at both ends for direct con-
nection to a separate SNAPHAT housing con-
taining the battery.
The unique design allows the SNAPHAT battery
package to be mounted on top of the SOIC pack-
age after the completion of the surface mount pro-
cess. Insertion of the SNAPHAT housing after
reflow prevents potential battery damage due to
the high temperatures required for device surface-
mounting. The SNAPHAT housing is keyed to pre-
vent reverse insertion.
The SNAPHAT battery package is shipped sepa-
rately in plastic anti-static tubes or in Tape & Reel
form. The part number is “M4Txx-BR12SH1” (see
Table 14, page 23).
The 32-pin, 600mil DIP Hybrid houses a controller
chip, SRAM, quartz crystal, and a long life lithium
button cell in a single package.
Figure 3. Logic Diagram
Table 1. Signal Names
AI02260
17
A0-A16
DQ0-DQ7
VCC
M48T129Y
M48T129V
G
VSS
8
E
W
RST
IRQ/FT
A0-A16
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
E
Chip Enable Input
G
Output Enable Input
W
WRITE Enable Input
RST
Reset Output (open drain)
IRQ/FT
Interrupt / Frequency Test
Output (open drain)
VCC
Supply Voltage
VSS
Ground
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T129Y-70CS1 | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T129Y-70PM1 | 0 TIMER(S), REAL TIME CLOCK, PDIP32 |
| M48T212A-85MH6TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T212A-85MH1TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M48T212A-85MH6 | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T128V-85PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T128V-85PM1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T128VPM | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T128Y | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T128Y_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V, 1 Mbit (128 Kb x 8) TIMEKEEPER?? SRAM |
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