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參數(shù)資料
| 型號： | M48T37Y |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 3.3V-5V 256Kbit (32Kb x8) Timekeeper SRAM(256K位(32K x 8) Timekeeper 靜態(tài)RAM) |
| 中文描述： | 3.3 - 5V的256Kbit（的32KB × 8）計(jì)時(shí)器的SRAM（256K位（32K的× 8）計(jì)時(shí)器靜態(tài)內(nèi)存） |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 174K |
| 代理商： | M48T37Y |
M48T37Y
M48T37V
3.3V-5V 256 Kbit (32Kb x8) TIMEKEEPER
SRAM
October 1998
1/20
INTEGRATED ULTRA-LOW POWER SRAM,
REAL TIME CLOCK, POWER-FAIL CONTROL
CIRCUIT and BATTERY
FREQUENCY TEST OUTPUT for REAL TIME
CLOCK
YEAR 2000 COMPLIANT
AUTOMATIC POWER-FAIL CHIP DESELECT
and WRITE PROTECTION
WATCHDOG TIMER
WRITE PROTECT VOLTAGE
(V
PFD
= Power-Fail Deselect Voltage):
– M48T37Y: 4.2V
≤
V
PDF
≤
4.5V
– M48T37V: 2.7V
≤
V
PFD
≤
3.0V
PACKAGING INCLUDES a 44-LEAD SOIC
and SNAPHAT
TOP
(to be Ordered Separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT TOP which
CONTAINS the BATTERY and CRYSTAL
MICROPROCESSOR POWER-ON RESET
(Valid even during battery back-up mode)
PROGRAMMABLE ALARM OUTPUT ACTIVE
in the BATTERY BACKED-UP
DESCRIPTION
The M48T37Y/37V TIMEKEEPER
RAM is a 32Kb
x8 non-volatile static RAM and real time clock. The
monolithic chip is available in a special package
which provides a highly integrated battery backed-
up memory and real time clock solution.
AI02172
8
DQ0-DQ7
W
VCC
M48T37Y
M48T37V
VSS
G
E
WDI
RST
IRQ/FT
15
A0-A14
Figure 1. Logic Diagram
A0-A14
DQ0-DQ7
Address Input
Data Input / Output
Interrupt / Frequency Test Output
(Open Drain)
Power Fail Reset Output (Open Drain)
Watchdog Input
Chip Enable
Output Enable
Write Enable
Supply Voltage
Ground
IRQ/FT
RST
WDI
E
G
W
V
CC
V
SS
Table 1. Signal Names
SNAPHAT (SH)
Battery/Crystal
44
1
SOH44 (MH)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T37V | 3.3V-5V 256Kbit (32Kb x8) Timekeeper SRAM(256K位(32K x 8) Timekeeper 靜態(tài)RAM) |
| M48T39Y | 256Kb (32K x 8) Timekeeper SRAM(256K位(32K x 8) Timekeeper 靜態(tài)RAM) |
| M48T512V | 3.3V-5V 4Mbit (512Kb x 8) Timekeeper SRAM(4Mb TIMERKEEPEER SRAM) |
| M48T512Y | 3.3V-5V 4Mbit (512Kb x 8) Timekeeper SRAM(4Mb TIMERKEEPEER SRAM) |
| M48T513V | 3.3V-5V 4Mb (512K x 8) Timekeeper SRAM(4Mb TIMERKEEPEER SRAM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T37Y_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER?? SRAM |
| M48T37Y-10MH1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T37Y-10MH1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T37Y-10MH1F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T37Y-10MH1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
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