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参数资料
| 型号： | DS1747P-70 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | REAL TIME CLOCK, DMA34 |
| 封装： | POWERCAP MODULE BOARD-34 |
| 文件页数： | 1/18页 |
| 文件大小： | 246K |
| 代理商： | DS1747P-70 |
1 of 18
021800
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.
Century byte register; ie., Y2K compliant
Totally nonvolatile with over 10 years of
operation in the absence of power
BCD coded century, year, month, date, day,
hours, minutes, and seconds with automatic
leap year compensation valid up to the year
2100
Battery voltage level indicator flag
Power-fail write protection allows for ±10%
V CC power supply tolerance
Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time
DIP Module only
-
Standard JEDEC Byte-wide 512k x 8
static RAM pinout
PowerCap Module Board only
-
Surface mountable package for direct
connection to PowerCap containing
battery and crystal
-
Replaceable battery (PowerCap)
-
Power-On Reset Output
-
Pin for pin compatible with other densities
of DS174XP Timekeeping RAM
PIN ASSIGNMENT
DS1747/DS1747P
Y2KC Nonvolatile Timekeeping RAM
www.dalsemi.com
PRELIMINARY
1
NC
2
3
A15
A16
RST
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)
A18
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
DQ2
GND
15
16
18
17
DQ4
DQ3
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| DS1747P | REAL TIME CLOCK, DMA34 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1747P-70+ | 功能描述:实时时钟 Timekeeping NV 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 |
| DS1747P-70IND | 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 |
| DS1747P-70IND+ | 功能描述:实时时钟 Timekeeping NV 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 |
| DS1747W-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 |
| DS1747W-120+ | 功能描述:实时时钟 Timekeeping NV 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 |
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