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參數(shù)資料
| 型號(hào)： | M48T58 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 64Kb (8K x 8) TIMEKEEPER SRAM(64K位 TIMEKEEPER SRAM) |
| 中文描述： | 64Kb的（8K的× 8）計(jì)時(shí)器的SRAM（64K的位計(jì)時(shí)器的SRAM） |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大小： | 158K |
| 代理商： | M48T58 |
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M48T58
M48T58Y
64Kb (8K x 8) TIMEKEEPER
SRAM
January 1998
1/17
INTEGRATED ULTRA LOW POWER SRAM,
REAL TIME CLOCK, POWER-FAIL CONTROL
CIRCUIT and BATTERY
BYTEWIDE
RAM-LIKE CLOCK ACCESS
BCD CODED YEAR, MONTH, DAY, DATE,
HOURS, MINUTES and SECONDS
FREQUENCY TEST OUTPUT for REAL TIME
CLOCK
AUTOMATIC POWER-FAIL CHIP DESELECT and
WRITE PROTECTION
WRITE PROTECT VOLTAGES
(V
PFD
= Power-fail Deselect Voltage):
– M48T58: 4.5V
≤
V
PFD
≤
4.75V
– M48T58Y: 4.2V
≤
V
PFD
≤
4.5V
SELF-CONTAINED BATTERY and CRYSTAL
in the CAPHAT DIP PACKAGE
PACKAGING INCLUDES a 28-LEAD SOIC
and SNAPHAT
TOP
(to be Ordered Separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT TOP which
CONTAINS the BATTERY and CRYSTAL
PIN and FUNCTION COMPATIBLE with
JEDEC STANDARD 8K x 8 SRAMs
DESCRIPTION
The M48T58/58Y TIMEKEEPER
RAM is an 8K x
8 non-volatile static RAM and real time clock. The
monolithic chip is available in two special packages
to provide a highly integrated battery backed-up
memory and real time clock solution.
AI01374B
13
A0-A12
W
DQ0-DQ7
VCC
M48T58
M48T58Y
G
E2
VSS
8
E1
FT
Figure 1. Logic Diagram
A0-A12
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
FT
Frequency Test Output (Open Drain)
E1
Chip Enable 1
E2
Chip Enable 2
G
Output Enable
W
Write Enable
V
CC
V
SS
Supply Voltage
Ground
Table 1. Signal Names
28
1
PCDIP28 (PC)
Battery/Crystal
CAPHAT
SNAPHAT (SH)
Battery/Crystal
28
1
SOH28 (MH)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48T58Y | 64Kb (8K x 8) TIMEKEEPER SRAM(64K位 TIMEKEEPER SRAM) |
| M48T59 | 64Kbit (8Kb x8) SRAM(６４K 位定時(shí)器靜態(tài)RAM) |
| M48T59V | 64Kbit (8Kb x8) SRAM(６４K 位定時(shí)器靜態(tài)RAM) |
| M48T59Y | 64Kbit (8Kb x8) TIMEKEEPER SRAM(６4K 位定時(shí)器靜態(tài)RAM) |
| M48T86 | 5V PC Real Time Clock(5VＰＣ實(shí)時(shí)時(shí)鐘) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T58_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0V, 64 Kbit (8 Kb x 8) TIMEKEEPER SRAM |
| M48T58_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER? SRAM |
| M48T58_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER?? SRAM |
| M48T58-70MH1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0V, 64 Kbit (8 Kb x 8) TIMEKEEPER SRAM |
| M48T58-70MH1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0V, 64 Kbit (8 Kb x 8) TIMEKEEPER SRAM |
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