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参数资料
| 型号： | DS1647 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, DMA32 |
| 封装： | PLASTIC, MODULE, DIP-32 |
| 文件页数： | 1/11页 |
| 文件大小： | 187K |
| 代理商： | DS1647 |
1 of 11
022101
FEATURES
Integrates 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
DS1647 only (DIP Module)
Standard JEDEC byte-wide 128k x 8
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
32-pin DIP module
*DS1647P
34-pin PowerCap Module
Board
*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
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1647-12 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1647-120 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1647-120+ | 功能描述:实时时钟 NV Timekeeping RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1647-15 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1647D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4-Bit Bus Transceiver |
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