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| 型号： | DS1302Z/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC TIMEKEEPER T-CHARGE 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 时钟/日历 |
| 特点： | 闰年，NVSRAM，涓流充电器 |
| 存储容量： | 31B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | 3 线串口 |
| 电源电压： | 2 V ~ 5.5 V |
| 电压 - 电源，电池： | 2 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
DS1302 Trickle-Charge Timekeeping Chip
8 of 13
CLOCK/CALENDAR BURST MODE
The clock/calendar command byte specifies burst mode operation. In this mode, the first eight clock/calendar
registers can be consecutively read or written (see Table 3) starting with bit 0 of address 0.
If the write-protect bit is set high when a write clock/calendar burst mode is specified, no data transfer will occur to
any of the eight clock/calendar registers (this includes the control register). The trickle charger is not accessible in
burst mode.
At the beginning of a clock burst read, the current time is transferred to a second set of registers. The time
information is read from these secondary registers, while the clock may continue to run. This eliminates the need to
re-read the registers in case of an update of the main registers during a read.
RAM
The static RAM is 31 x 8 bytes addressed consecutively in the RAM address space.
RAM BURST MODE
The RAM command byte specifies burst mode operation. In this mode, the 31 RAM registers can be consecutively
read or written (see Table 3) starting with bit 0 of address 0.
REGISTER SUMMARY
A register data format summary is shown in Table 3.
CRYSTAL SELECTION
A 32.768kHz crystal can be directly connected to the DS1302 via pins 2 and 3 (X1, X2). The crystal selected for
use should have a specified load capacitance (CL) of 6pF. For more information on crystal selection and crystal
layout consideration, refer to
Application Note 58: Crystal Considerations for Dallas Real-Time Clocks.
Figure 4. Data Transfer Summary
A1
A2
A3
A4 R/C
1
CE
SCLK
I/O
R/W A0
D1
D2
D3
D4
D5
D6
D7
D0
SINGLE-BYTE READ
A1
A2
A3
A4 R/C
1
CE
SCLK
I/O
R/W A0
D1
D2
D3
D4
D5
D6
D7
D0
SINGLE-BYTE WRITE
NOTE: IN BURST MODE, CE IS KEPT HIGH AND ADDITIONAL SCLK CYCLES ARE SENT UNTIL THE END OF THE BURST.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1304FP000 | 制造商:Thomas & Betts 功能描述:100A,CON,3P4W,MG,304,277/480V |
| DS1304MP000 | 制造商:Thomas & Betts 功能描述:100A,PLG,3P4W,MG,304,277/480V |
| DS1304MR000 | 制造商:Thomas & Betts 功能描述:100A,NTL,3P4W,MG,304,277/480V |
| DS1304MRAB0 | 制造商:Thomas & Betts 功能描述:100A,NLT,3P4W,MG,304,AB0,277/480V |
| DS1305 | 功能描述:实时时钟 Serial Alarm RTC 3-Wire 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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