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參數資料
| 型號： | DS1647-120 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA28 |
| 封裝： | MODULE, DIP-28 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 370K |
| 代理商： | DS1647-120 |
1 of 11
080299
FEATURES
§ Integrated NV SRAM, real time clock,
crystal, power-fail control circuit and lithium
energy source
§ Clock registers are accessed identical 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
§ Access time of 120 ns and 150 ns
§ 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
§ DS1647 only (DIP Module)
Upward compatible with the DS1646
Timekeeping RAM
Standard JEDEC Byte-wide 512k x 8
static RAM pinout
§ DS1647P 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
ORDERING INFORMATION
DS1647-XXX
(28-pin DIP module)
-120
120 ns access
-150
150 ns access
*DS1647P-XXX
(34-pin PowerCap Module
Board)
-120
120 ns access
-150
150 ns access
*DS9034PCX
(Power Cap) Required;
must be ordered separately
PIN ASSIGNMENT
DS1647/DS1647P
Nonvolatile Timekeeping RAM
www.dalsemi.com
1
NC
2
3
A15
A16
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
A17
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
A18
X1
GND
VBAT
X2
34-PIN POWERCAP MODULE BOARD
(USES DS9034PCX POWERCAP)
13
1
2
3
4
5
6
7
8
9
10
11
12
14
31
512K X 8
32-PIN ENCAPSULATED PACKAGE
A14
A7
A5
A4
A3
A2
A1
A0
DQ1
DQ0
VCC
A15
A17
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ5
DQ6
32
30
29
28
27
26
25
24
23
22
21
19
20
A16
A12
A6
A18
DQ2
GND
15
16
18
17
DQ4
DQ3
相關PDF資料 |
PDF描述 |
|---|---|
| DS1647P-120 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1647P | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1647 | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| DS1670 | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| DS1672-2 | 0 TIMER(S), REAL TIME CLOCK, PDIP8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1647-120+ | 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 |
| DS1647-15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:NVRAM (Battery Based) |
| DS1647D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Bus Transceiver |
| DS1647L-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:NVRAM (Battery Based) |
| DS1647L-15 | 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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