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參數(shù)資料
| 型號： | M48T35YMH |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| 中文描述： | 256千位的32KB的SRAM x8計時器 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大小： | 148K |
| 代理商： | M48T35YMH |
1/19
May 2000
M48T35AY
M48T35AV
256 Kbit (32Kb x8) TIMEKEEPER
SRAM
I
INTEGRATED ULTRA LOW POWER SRAM,
REAL TIME CLOCK, POWER-FAIL CONTROL
CIRCUIT and BATTERY
I
BYTEWIDE RAM-LIKE CLOCK ACCESS
I
BCD CODED YEAR, MONTH, DAY, DATE,
HOURS, MINUTES and SECONDS
I
BATTERY LOW FLAG (BOK)
I
FREQUENCY TEST OUTPUT for REAL TIME
CLOCK
I
AUTOMATIC POWER-FAIL CHIP DESELECT
and WRITE PROTECTION
I
WRITE PROTECT VOLTAGES
(V
PFD
= Power-fail Deselect Voltage):
– M48T35AY: 4.2V
≤
V
PFD
≤
4.5V
– M48T35AV: 2.7V
≤
V
PFD
≤
3.0V
I
SELF-CONTAINED BATTERY and CRYSTAL
in the CAPHAT DIP PACKAGE
I
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT HOUSING
CONTAINING the BATTERY and CRYSTAL
I
SNAPHAT
HOUSING (BATTERY and
CRYSTAL) is REPLACEABLE
I
PIN and FUNCTION COMPATIBLE with
JEDEC STANDARD 32Kb x8 SRAMs
DESCRIPTION
The M48T35AY/35AV TIMEKEEPER
RAM is a
32Kb x8 non-volatile static RAM and real time
clock. The monolithic chip is available in two spe-
cial packages to provide a highly integrated bat-
tery backed-up memory and real time clock
solution.
The M48T35AY/35AV is a non-volatile pin and
function equivalent to any JEDEC standard 32Kb
x8 SRAM. It also easily fits into many ROM,
EPROM, and EEPROM sockets, providing the
non-volatility of PROMs without any requirement
for special write timing or limitations on the number
of writes that can be performed.
Figure 1. Logic Diagram
AI02797B
15
A0-A14
W
DQ0-DQ7
VCC
M48T35AY
M48T35AV
G
VSS
8
E
28
1
28
1
SOH28 (MH)
SNAPHAT (SH)
Battery/Crystal
PCDIP28 (PC)
Battery/Crystal
CAPHAT
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| M48T35AV-70MH1 | 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T35AY-10MH1 | 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| M48T35YPC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T35YSH | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| M48T36 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CMOS 32K x 8 TIMEKEEPER SRAM |
| M48T36Y-70MH1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CMOS 32K x 8 TIMEKEEPER SRAM |
| M48T37 | 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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