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參數(shù)資料
| 型號： | DS1243 |
| 英文描述： | 0.05uV/C max, Single-Supply CMOS Operational Amplifier 10-MSOP -40 to 125 |
| 中文描述： | 64k NV SRAM，帶有隱含時鐘 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 349K |
| 代理商： | DS1243 |
1 of 13
080299
FEATURES
§
Real time clock keeps track of hundredths of
seconds, seconds, minutes, hours, days, date
of the month, months, and years
§
8K x 8 NV SRAM directly replaces volatile
static RAM or EEPROM
§
Embedded lithium energy cell maintains
calendar operation and retains RAM data
§
Watch function is transparent to RAM
operation
§
Month and year determine the number of days
in each month; valid up to 2100
§
Lithium
energy
source
disconnected to retain freshness until power is
applied for the first time
§
Standard 28–pin JEDEC pinout
§
Full ±10% operating range
§
Operating temperature range 0°C to 70°C
§
Accuracy is better than ±1 minute/month @
25°C
§
Over 10 years of data retention in the absence
of power
§
Available in 120, 150 and 200 ns access time
is
electrically
ORDERING INFORMATION
DS1243Y–XXX
–120 120 ns access
–150 150 ns access
200 ns access
DS1243Y
PIN ASSIGNMENT
PIN DESCRIPTION
A
0
–A
12
CE
GND
DQ
0
–DQ
7
V
CC
WE
OE
NC
– Address Inputs
– Chip Enable
– Ground
– Data In/Data Out
– Power (+5V)
– Write Enable
– Output Enable
– No Connect
– Reset
RST
DESCRIPTION
The DS1243Y 64K NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 8192
words by 8 bits) with a built–in real time clock. The DS1243Y has a self–contained lithium energy source
and control circuitry which constantly monitors V
CC
for an out–of–tolerance condition. When such a
condition occurs, the lithium energy source is automatically switched on and write protection is
unconditionally enabled to prevent corrupted data in both the memory and real time clock.
DS1243Y
64K NV SRAM with Phantom Clock
www.dalsemi.com
28-Pin Encapsulated Package
720-Mil Extended
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
V
CC
WE
NC
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
1
2
3
4
5
6
7
8
9
10
11
12
14
13
28
27
26
25
24
23
22
21
20
19
18
17
15
16
A12
RST
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1243Y | 64K NV SRAM with Phantom Clock |
| DS1244Y | Low-Power, 24-Bit ANALOG-TO-DIGITAL CONVERTER |
| DS1244W-120IND | 256k NV SRAM with Phantom Clock |
| DS1244WP-120IND | 256k NV SRAM with Phantom Clock |
| DS1244YP-70 | CAT5E PATCH CORD 30 FOOT BEIGE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1243Y | 功能描述:實時時鐘 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1243Y+ | 制造商:Maxim Integrated Products 功能描述:Bulk |
| DS1243Y-120 | 功能描述:實時時鐘 64k NV SRAM w/Phantom Clock 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1243Y120+ | 制造商:Maxim Integrated Products 功能描述: |
| DS1243Y-120+ | 功能描述:實時時鐘 64k NV SRAM w/Phantom Clock 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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