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參數資料
| 型號： | DS1644P-120 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| 封裝： | POWERCAP MODULE BOARD-34 |
| 文件頁數： | 1/13頁 |
| 文件大?。?/td> | 302K |
| 代理商： | DS1644P-120 |
1 of 13
REV: 040805
FEATURES
§ Integrated NV SRAM, Real-Time Clock,
Crystal, Power-Fail Control Circuit and
Lithium Energy Source
§ Clock Registers are Accessed Identically to
the Static RAM. These Registers are
Resident in the Eight Top RAM Locations.
§ Totally Nonvolatile with Over 10 Years of
Operation in the Absence of Power
§ BCD-Coded Year, Month, Date, Day, Hours,
Minutes, and Seconds with Leap Year
Compensation Valid Up to 2100
§ Power-Fail Write Protection Allows for
±10% VCC Power Supply Tolerance
§ DS1644 Only (DIP Module)
Upward Compatible with the DS1643
Timekeeping RAM to Achieve Higher
RAM Density
Standard JEDEC Bytewide 32k x 8 Static
RAM Pinout
§ DS1644P Only (PowerCap
Module Board)
Surface Mountable Package for Direct
Connection to PowerCap Containing
Battery and crystal
Replaceable Battery (PowerCap)
Power-Fail Output
Pin-for-Pin Compatible with Other Densities
of DS164XP Timekeeping RAM
Underwriters Laboratory (UL) Recognized
PIN CONFIGURATIONS
ORDERING INFORMATION
PART
VOLTAGE
RANGE (V)
TEMP RANGE PIN-PACKAGE
TOP MARK
DS16440120+
5.0
0°C to +70°C
32 EDIP (0.740a)
DS1644+120
DS16440-120
5.0
0°C to +70°C
32 EDIP (0.740a)
DS1644-120
DS1644P120+
5.0
0°C to +70°C
34 PowerCap*
DS1644P+120
DS1644P-120
5.0
0°C to +70°C
34 PowerCap*
DS1644P-120
*DS9034-PCX, DS9034I-PCX, DS9034-PCX+ required (must be ordered separately).
A “+" indicates a lead-free product. The top mark will include a “+" symbol on lead-free devices.
1
NC
2
3
NC
PFO
VCC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
4
5
6
7
8
9
10
11
12
13
14
15
16
17
NC
A14
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
34
NC
X1 GND VBAT
X2
34-Pin PowerCap Module Board
(Uses DS9034PCX PowerCap)
15
13
27
28-Pin Encapsulated Package
(720-mil Extended)
A7
A5
A3
A2
A1
A0
DQ0
DQ1
GND
DQ2
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
28
26
25
24
23
22
21
20
19
18
17
16
A12
A6
A4
A14
DS1644/DS1644P
Nonvolatile Timekeeping RAM
www.maxim-ic.com
PowerCap is a registered trademark of Dallas Semiconductor.
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PDF描述 |
|---|---|
| DS1644P | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1644 | 0 TIMER(S), REAL TIME CLOCK, DMA28 |
| DS1646-120 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| DS1646P-120 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1646L-120 | 0 TIMER(S), REAL TIME CLOCK, DSO34 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1644P120+ | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Nonvolatile Timekeeping RAM |
| DS1644P-120+ | 功能描述:實時時鐘 NV Timekeeping RAM 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 |
| DS1644P-150 | 制造商:Maxim Integrated Products 功能描述: |
| DS1645AB100 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-1M CMOS NVRAM |
| DS1645AB-100-IND | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:NVRAM (Battery Based) |
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