參數(shù)資料
型號: DS1244WP-120IND
廠商: Maxim Integrated Products
文件頁數(shù): 1/20頁
文件大?。?/td> 0K
描述: IC NVSRAM 256KBIT 120NS 34PCM
標準包裝: 40
類型: Phantom 計時芯片
特點: 閏年,NVSRAM
存儲容量: 32KB
時間格式: HH:MM:SS:hh(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: 并聯(lián)
電源電壓: 2.97 V ~ 3.63 V
電壓 - 電源,電池: 3V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 34-PowerCap? 模塊
供應商設備封裝: 34-PowerCap 模塊
包裝: 管件
1 of 20
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
Automatic Leap Year Compensation Valid
Up to 2100
Full 10% Operating Range
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 Laboratories (UL) Recognized
PIN CONFIGURATIONS
EDIP Module
(740 mils)
VCC
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ3
DQ4
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
GND
DQ2
3
N.C.
WE
CE
DQ7
DQ6
DQ4
DQ3
DQ1
DQ0
4
6
7
8
10
11
12
14
15
16
N.C.
33
32
31
29
27
25
24
22
21
20
18
A12
A11
A9
A8
A6
A5
A2
A4
A0
1
VCC
28
A1
RST
2
N.C.
OE
DQ5
DQ2
GND
5
9
13
17
A14
30
26
23
19
A13
A10
A7
A3
34
N.C.
X1 GND VBAT X2
PowerCap Module
(Uses DS9034PCX+ PowerCap)
TOP VIEW
DS1244P
DS1244
DS1244/DS1244P
256K NV SRAM with Phantom Clock
www.maxim-ic.com
19-6077; Rev 11/11
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