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參數(shù)資料
| 型號： | M48T129 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| 中文描述： | 3.3 - 5V的1兆位的SRAM 128KB的x8計時器 |
| 文件頁數(shù)： | 2/22頁 |
| 文件大?。?/td> | 140K |
| 代理商： | M48T129 |
M48T129Y, M48T129V
2/22
Figure 2. DIP Connections
A1
A0
DQ0
DQ1
DQ2
VSS
A7
A6
A5
A4
A3
A2
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
A15
IRQ/FT
DQ5
DQ4
DQ3
A16
A14
RST
VCC
AI02261
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A12
W
32
31
M48T129Y
M48T129V
Table 2. Absolute Maximum Ratings
(1)
Symbol
T
A
Ambient Operating Temperature
T
STG
Storage Temperature (V
CC
Off, Oscillator Off)
Note: 1. Stresses greater than those listed under ”Absolute Maximum Ratings” may cause permanent damage to thedevice. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational section
of this specification is not implied. Exposure to the absolute maximum rating conditions for extended periods of time may affect
reliability.
2. Soldering temperature not to exceed 260
°
C for 10 seconds (total thermal budget not to exceed 150
°
C for longer than 30 seconds).
CAUTION:
Negative undershoots below –0.3V are not allowed on any pin while in the Battery Back-up mode.
Parameter
Value
Unit
°
C
°
C
0 to 70
–40 to 85
V
IO
Input or Output Voltages
–0.3 to V
CC
+0.3
V
V
CC
Supply Voltage
M48T129Y
–0.3 to 7.0
V
M48T129V
–0.3 to 4.6
V
I
O
Output Current
20
mA
P
D
Power Dissipation
1
W
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 contain-
ing 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-
Table 1. Signal Names
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)
V
CC
Supply Voltage
V
SS
Ground
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 integrat-
ed battery back-up memory and real time clock so-
lution. The M48T129Y/V directly replaces industry
standard 128Kb x 8 SRAM. It also provides the
non-volatility of Flash without any requirement for
special write timing or limitations on the number of
writes that can be performed.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T129Y-70CS1 | Safety Sign; Legend:Danger Chlorine; External Height:7"; External Width:10"; Body Material:Polyester; Color:Red/Black RoHS Compliant: NA |
| M48T129V-85CS1 | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V-85PM1 | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129Y-70PM1 | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129YPM | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T129V | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V-70CS1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V-70PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V, 1 Mbit (128 Kbit x 8) TIMEKEEPER SRAM |
| M48T129V-85CS1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48T129V-85PM1 | 功能描述:實時時鐘 1M (128Kx8) 85ns 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 |
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