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參數資料
| 型號： | DS1244P |
| 英文描述： | 256k NV SRAM with Phantom Clock |
| 中文描述： | 256k NV SRAM，帶有隱含時鐘 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 288K |
| 代理商： | DS1244P |
1 of 19
081902
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
http://www.maxim-ic.com/errata
.
FEATURES
Real-time clock (RTC) keeps track of
hundredths of seconds, minutes, hours, days,
date of the month, months, and years
32k 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
Full 10% operating range
Operating temperature range: 0 C to +70 C
Over 10 years of data retention in the
absence of power
Lithium energy source is electrically
disconnected to retain freshness until power
is applied for the first time
DIP module only
Standard 28-pin JEDEC pinout
PowerCap
module board only
–
Surface mountable package for direct
connection to PowerCap containing
battery and crystal
–
Replaceable battery (PowerCap)
–
Pin-for-pin compatible with DS1248P
and DS1251P
Underwriters Laboratory (UL) recognized
PowerCap is a registered trademark of Dallas Semiconductor.
PIN ASSIGNMENT (Top View)
http://www.maxim-ic.com/TechSupport/DallasPackInfo.htmDS2144
28-PDIP Module (740mil)
V
CC
WE
A13
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
A14/RST
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
3
4
5
N.C.
N.C.
N.C.
V
WE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
6
7
8
9
10
11
12
13
14
15
16
17
N.C.
A14
A13
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
1
2
RST
CE
34
N.C.
X1
GND V
BAT
X2
DS1244P
34-Pin PowerCap Module
(Uses DS9034PCX PowerCap)
DS1244/DS1244P
256k NV SRAM
with Phantom Clock
www.maxim-ic.com
www.maxim-ic.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1244W-120 | 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 |
| DS1244W-120+ | 功能描述:實時時鐘 256k 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 |
| DS1244W-120IND | 功能描述:IC NVSRAM 256KBIT 120NS 28DIP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 實時時鐘 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:時鐘/日歷 特點:警報器，閏年，SRAM 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 數據格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應商設備封裝:8-TDFN EP 包裝:管件 |
| DS1244W-120IND+ | 功能描述:實時時鐘 256k 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 |
| DS1244WP-120 | 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 |
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