参数资料
| 型号： | DS1343D-33+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC RTC SPI 3.3V 14TDFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，NVRAM，方波输出，涓流充电器 |
| 存储容量： | 96B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 电源电压： | 3 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 管件 |
15
Maxim Integrated
Low-Current SPI/3-Wire RTCs
DS1343/DS1344
Assume, for the purposes of the example, that a system
power supply of 5V is applied to VCC and a super cap is
connected to VBAT. Also assume that the trickle charger
has been enabled with one diode and resistor R1. The
maximum current IMAX would be calculated as follows:
IMAX = (5.0V - diode drop)/R1 ≈ (5.0V - 0.6V)/2k ≈
2.2mA
As the super cap charges, the voltage drop between
VCC and VBAT decreases, and therefore, the charge
current decreases.
Serial Port Operation
The devices offer the flexibility to choose between two
serial-interface modes. The component can commu-
nicate with the SPI interface or with a standard 3-wire
interface. The interface method used is determined by
SERMODE. When SERMODE is connected to VCC, SPI
communication is selected. When SERMODE is con-
nected to ground, standard 3-wire communication is
selected.
Figure 2. Trickle Charger Block Diagram
Table 3. Trickle-Charger Resistor and Diode Select
X = Don’t care.
R1
1k
R2
2k
R3
4k
VCC
VBAT
1 0F 18 SELECT
NOTE: ONLY 1010 CODE ENABLES CHARGER
1 OF 2
SELECT
1 OF 3
SELECT
TCS = TRICKLE-CHARGER SELECT
DS = DIODE SELECT
RS = RESISTOR SELECT
TRICKLE
CHARGER
REGISTER
TCS
BIT 7
TCS
BIT 6
TCS
BIT 5
TCS
BIT 4
DS
BIT 3
DS
BIT 2
RS
BIT 1
RS
BIT 0
TCS3
TCS2
TCS1
TCS0
DS1
DS0
RS1
RS0
FUNCTION
X
0
Disabled
X
0
X
Disabled
X
1
X
Disabled
1
0
1
0
1
0
1
No diode, 1kI
1
0
1
0
1
0
No diode, 2kI
1
0
1
0
1
No diode, 4kI
1
0
1
0
1
0
1
One diode, 1kI
1
0
1
0
1
0
1
0
One diode, 2kI
1
0
1
0
1
0
1
One diode, 4kI
0
Initial power-on state—disabled
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1343D-33+ | 功能描述:实时时钟 Low-Current SPI/3-Wire RTC 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 |
| DS1343D-33+T&R | 制造商:Maxim Integrated Products 功能描述:SPI RTC 14P TDFN 3.3V 6PF ALRM T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC SPI 3.3V 14TDFN-EP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Low-Current SPI/3-Wire RTC |
| DS1343D-33+T&R | 功能描述:实时时钟 Low-Current SPI/3-Wire RTC 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 |
| DS1343E-18+ | 功能描述:实时时钟 Low-Current SPI/3-Wire RTC 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 |
| DS1343E-18+T&R | 制造商:Maxim Integrated Products 功能描述:SPI RTC 20P TSSOP 1.8V 6PF ALRM TR - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC SPI 1.8V 20TSSOP |
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