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参数资料
| 型号： | DS12R887 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | RTC with Constant-Voltage Trickle Charger |
| 中文描述： | 带有恒压涓流充电器的RTC |
| 文件页数： | 21/22页 |
| 文件大小： | 1093K |
| 代理商： | DS12R887 |
D
RTC with Constant-Voltage Trickle Charger
____________________________________________________________________
21
Handling, PC Board Layout,
and Assembly
The EDIP and BGA packages contain a quartz tuning-
fork crystal. Pick-and-place equipment can be used,
but precautions should be taken to ensure that exces-
sive shocks are avoided. Ultrasonic cleaning should be
avoided to prevent damage to the crystal.
The BGA package can be reflowed as long as the fol-
lowing conditions are met:
1. Preheating (below 160°C) is within 90 seconds.
2. Maximum time above 150°C is less than 180 seconds.
3. Maximum time above 170°C is less than 100 seconds.
4. Maximum time above 200°C is less than 60 seconds.
5. Maximum time above 220°C is less than 30 seconds.
6. Peak temperature is less than or equal to 230°C.
Exposure to reflow is limited to two times maximum.
Moisture-sensitive packages are shipped from the
factory dry-packed. Handling instructions listed on the
package label must be followed to prevent damage dur-
ing reflow. Refer to the IPC/JEDEC J-STD-020B standard
for Moisture-Sensitive Device (MSD) classifications.
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
V
CC
SQW
N.C.
RCLR
AD0
X2
X1
MOT
TOP VIEW
V
BACKUP
IRQ
RESET
DS
AD4
AD3
AD2
AD1
16
15
14
13
9
10
11
12
N.C.
R/W
AS
CS
GND
AD7
AD6
AD5
SO (0.300")
DS12R885
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
V
CC
SQW
N.C.
N.C.
AD0
N.C.
N.C.
MOT
N.C.
IRQ
RESET
DS
AD4
AD3
AD2
AD1
16
15
14
13
9
10
11
12
N.C.
R/W
AS
CS
GND
AD7
AD6
AD5
EDIP (0.700")
DS12CR887
Pin Configurations
相关PDF资料 |
PDF描述 |
|---|---|
| DS12R887-33 | RTC with Constant-Voltage Trickle Charger |
| DS12R887-5 | RTC with Constant-Voltage Trickle Charger |
| DS1302S-16 | Trickle Charge Timekeeping Chip |
| DS1302SN | Trickle Charge Timekeeping Chip |
| DS1302ZN | Trickle Charge Timekeeping Chip |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS12R887-33 | 功能描述:实时时钟 RTC w/Constant V Trickle Charger 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 |
| DS12R887-5 | 功能描述:实时时钟 RTC w/Constant V Trickle Charger 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 |
| DS12T | 功能描述:DIP 开关/ SIP 开关 Raisd actutr std dip 12pos top tape seald RoHS:否 制造商:Omron Electronics 位置数量:10 开关类型:DIP 执行器:Rotary 端子节距:2.54 mm 触点形式: 端接类型:Solder Pin 电流额定值:100 mA 电压额定值 DC: 工作温度范围: 安装:Through Hole |
| DS12V | 制造商:APEM 功能描述:DIP SWITCH STD.12-WAY 制造商:APEM COMPONENTS 功能描述:DIP SWITCH STD.12-WAY |
| DS-12-V | 制造商:Diptronics Manufacturing Inc 功能描述: |
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