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一、 应用领域
工控主板、安卓主板、TV板卡、智能三表(电表、水表、气表)、便携式仪器仪表等需要计时或有日历要求的产品。
二、 基本特性
D8563和D1302是芯谷科技推出的RTC实时时钟芯片,具有功耗低、走时精准、外围简单等特点,二者基本特性如下:
D8563 |
D1302 |
1、 宽电压1.0V⁓5.5V工作; 2、低功耗:典型值250nA (VDD=3.0V,Tamb=25℃); 3、400kHz I2C总线速率(VDD=1.8⁓5.5V),地址读0A3H,写0A2H; 4、可编程时钟输出:32.768KHz/1024Hz/32Hz/1Hz; 5、四种报警功能和定时器功能; 6、封装:SOP8/MSOP8/TSSOP8。 |
1、宽电压2.0V⁓5.5V工作; 2、低功耗小于300nA(VDD=2.0V,Tamb=25℃); 3、串行3线I/O口通讯; 4、单地址或连续地址读写模式; 5、内置31字节非易失性RAM用于数据存储; 6、实时计数秒、分、时、日、月和年(至2100年); 7、封装:SOP8。 |
三、 引脚信息
D8563 |
D1302 |
||||
管脚号 |
符号 |
描述 |
管脚号 |
符号 |
描述 |
1 |
OSCI |
外接32.768kHz振荡器 |
1 |
VCC2 |
主电源正 |
2 |
OSCO |
外接32.768kHz振荡器 |
2 |
X1 |
外接32.768kHz振荡器 |
3 |
INT |
中断输出(开漏,低有效) |
3 |
X2 |
外接32.768kHz振荡器 |
4 |
VSS |
电源地 |
4 |
GND |
电源地 |
5 |
SDA |
串行数据 I/O |
5 |
RST |
重置复位脚(低有效) |
6 |
SCL |
串行时钟输入 |
6 |
I/O |
数据输入/输出 |
7 |
CLKOUT |
时钟输出(开漏) |
7 |
SCLK |
串行时钟输入 |
8 |
VDD |
电源正 |
8 |
VCC1 |
电池电源正 |
四、 参考设计
1、 D8563参考设计:
2、 D1302参考设计:
STM32L051C8T6/单片机(MCU/MPU/SOC) | 6.15 | |
AD9834BRUZ-REEL/直接数字频率合成(DDS) | 34.29 | |
LMC6482AIMX/NOPB/精密运放 | 1.86 | |
SN65HVD231DR/CAN收发器 | 3.85 | |
ADM3251EARWZ-REEL/隔离式RS-232收发器 | 12.14 | |
TLV62569DBVR/DC-DC电源芯片 | 0.1954 | |
MAX3232ESE+T/RS232芯片 | 4 | |
ISO1050DUBR/隔离式CAN收发器 | 2.05 | |
OPA2188AIDR/精密运放 | 2.11 | |
STM8L051F3P6TR/单片机(MCU/MPU/SOC) | 2.1 |
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