随着社会、科技、进步不断发展,RTC实时时钟(real_time时钟)在智能管家锁的应用中起着越来越重要的作用,开启和关闭,正常和异常事件的发生将产生定时信号,和关键的作用,当信标信号不能没有RTC。RTC具有独立完成定时或事件记录的功能。目前,许多电子产品都有时钟定时功能,如我们日常生活中常用的手机、笔记本电脑、平板电脑等数字产品都集成了实时时钟。
RTC产品种类繁多,可根据封装尺寸、时钟精度、附加功能、接口方式、待机功耗等进行分类。产品结构可分为两类:内置晶体和外部晶体。RTC内置晶体振荡器的结构通常是内置32.768kHz有源晶振。RTC外部晶体振荡器通常使用的32.768kHz石英晶体振荡器和晶体外部RTC,成本低,但往往有各种各样的问题。所以现在大多数RTC产品都是内置晶体振荡器结构。
接下来就让加科晶体电子带大家看看,32.768KHz有源晶振日系品牌和台系品牌型号有哪些呢?
型名 | 尺寸大小 (mm) | 额定频率 (kHz) | 综合频率允许偏差 [×10-6] | 工作温度范围 (°C) | |||
---|---|---|---|---|---|---|---|
L | W | H | Min. | Max. | |||
NZ2016SH | 2.0 | 1.6 | 0.7 | 32.768 | ±100 | -40 | +125 |
±50 | -40 | +105 | |||||
±30 | -40 | +85 | |||||
NZ2520SH | 2.5 | 2.0 | 0.9 | 32.768 | ±100 | -40 | +125 |
±50 | -40 | +105 | |||||
±30 | -40 | +85 | |||||
NZ3225SH | 3.2 | 2.5 | 0.9 | 32.768 | ±30 | -40 | +85 |
型名 | 尺寸(毫米) | 输出 | 频率范围(kHz) | 周波数許容偏差 (×10-6) (常温偏差含む) | 工作温度范围(℃) | 電源電圧(V) | |||||
---|---|---|---|---|---|---|---|---|---|---|---|
L | W | H(max.) | min. | max. | min. | max. | |||||
DSO221SR(kHz) | 2.5 | 2.0 | 0.895 | CMOS | 32.768 | 50 | ±35 | -40 | +85 | +1.6 to +5.5 | |
DSO321SR(kHz) | 3.2 | 2.5 | 1.2 | CMOS | 32.768 | 50 | ±35 | -40 | +85 | +1.6 to +5.5 | |
DSO221SY(kHz) | 2.5 | 2.0 | 0.895 | CMOS | 32.768 | 32.768 | ±35 | -40 | +85 | +1.6 to +3.6 | |
DSO321SY(kHz) | 3.2 | 2.5 | 1.2 | CMOS | 32.768 | 32.768 | ±35 | -40 | +85 | +1.6 to +3.6 |
型号 | 频率 (kHz) | 频率公差 @25℃(x10 -6) | Temp. Characteristics @25℃ (x10 -6) | 工作温度 (℃) | 尺寸 (mm) |
---|---|---|---|---|---|
KC2520B | 32.768 | - | ±25 | -40 to +85 | 2.5 x 2.0 x 0.7 |
KC2520M | 32.768 | - | ±90 | -40 to +125 | 2.5 x 2.0 x 0.7 |
日本EPSON晶振品牌:32.768KHz输出
型号 | 外部尺寸 [ mm ] | 输出 | 频率范围 [ kHz ] | 电源电压 [ V ] | 频率温度特征 (频率公差 / 工作温度) [ x10^-6 / °C to °C ] |
SG-3030LC | 3.6x2.8x1.2 | CMOS | 32.768 | 1.5 to 5.5 | 5 +/-23 / @ +25 Ope.Temp.Range: -20 to +70 |
---|---|---|---|---|---|
SG-3030JF | 7.1x5.1x1.5 | CMOS | 32.768 | 1.5 to 5.5 | 5 +/-23 / @ +25 Ope.Temp.Range: -20 to +70 |
SG-3030JC | 10.5x5.8x2.7 | CMOS | 32.768 | 1.5 to 5.5 | 5 +/-23 / @ +25 Ope.Temp.Range: -20 to +70 |
SG-3040LC | 3.6x2.8x1.2 | CMOS | 32.768 | 0.9 to 3.6 | 5 +/-23 / @ +25 Ope.Temp.Range: -20 to +70 |
SG-3040JC | 10.5x5.8x2.7 | CMOS | 32.768 | 0.9 to 3.6 | 5 +/-23 / @ +25 Ope.Temp.Range: -20 to +70 |
SG-3030CM | 3.2x1.5x0.9 | CMOS | 32.768 | 1.5 to 5.5 | 5 +/-23 / @ +25 Ope.Temp.Range: -40 to +85 |
台湾晶技TXC晶振品牌:32.768KHz输出 |
OSCILLATORS - 32.768KHz | |||||||
Model | Frequency | Stability (-10~70ºC) | Operating Temp | Voltage | Output | Dimensions | |
7WZ | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 7.0 x 5.0 x 1.3mm | |
7CZ | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 5.0 x 3.2 x 1.2mm | |
7XZ | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 3.2 x 2.5 x 1.0mm | |
8WZ | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 2.5 x 2.0 x 0.8mm |
台湾鸿星晶振品牌:32.768KHz输出 |
OSCILLATORS - 32.768KHz | ||||||
型号 | 频率 | 稳定性 | 工作温度 | 工作电压 | 输出 | 尺寸 |
D7SX | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 7.0 x 5.0 x 1.5mm |
D5SX | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 5.0 x 3.2 x 1.3mm |
D3SX | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 3.2 x 2.5 x 1.2mm |
D2SX | 32.768KHz | ±25ppm | -40~+85ºC | 1.8V-3.3V | CMOS | 2.5 x 2.0 x 0.9mm |
Part Number | Data Sheet | Description | Output Logic | Supply Voltage | Freq Range (MHz) | Package Size | Pads |
---|---|---|---|---|---|---|---|
KD 1.8V | kHz Crystal Oscillator | CMOS | 1.8 | 32.7680 kHz | 5.0 x 3.2 x 1.2 | 4 | |
KD 2.5V | kHz Crystal Oscillator | CMOS | 2.5 | 32.7680 kHz | 5.0 x 3.2 x 1.2 | 4 | |
KD 3.3V | kHz Crystal Oscillator | CMOS | 3.3 | 32.7680 kHz | 5.0 x 3.2 x 1.2 | 4 | |
KJ 1.8V | kHz Crystal Oscillator | CMOS | 1.8 | 32.7680 kHz | 2.5 x 2.0 x 0.9 | 4 | |
KJ 2.5V | kHz Crystal Oscillator | CMOS | 2.5 | 32.7680 kHz | 2.5 x 2.0 x 0.9 | 4 | |
KJ 3.3V | kHz Crystal Oscillator | CMOS | 3.3 | 32.7680 kHz | 2.5 x 2.0 x 0.9 | 4 | |
KK 1.8V | kHz Crystal Oscillator | CMOS | 1.8 | 32.7680 kHz | 3.2 x 2.5 x 1.0 | 4 | |
KK 2.5V | kHz Crystal Oscillator | CMOS | 2.5 | 32.7680 kHz | 3.2 x 2.5 x 1.0 | 4 | |
KK 3.3V | kHz Crystal Oscillator | CMOS | 3.3 | 32.7680 kHz | 3.2 x 2.5 x 1.0 | 4 | |
KM 1.8V | kHz Crystal Oscillator | CMOS | 1.8 | 32.7680 kHz | 2.0 x 1.6 x 0.75 | 4 | |
KM 2.5V | kHz Crystal Oscillator | CMOS | 2.5 | 32.7680 kHz | 2.0 x 1.6 x 0.75 | 4 | |
KM 3.3V | kHz Crystal Oscillator | CMOS | 3.3 | 32.7680 kHz | 2.0 x 1.6 x 0.75 | 4 | |
KN 1.8V | kHz Crystal Oscillator | CMOS | 1.8 | 32.7680 kHz | 7.0 x 5.0 x 1.4 | 4 | |
KN 2.5V | kHz Crystal Oscillator | CMOS | 2.5 | 32.7680 kHz | 7.0 x 5.0 x 1.4 | 4 | |
KN 3.3V | kHz Crystal Oscillator | CMOS | 3.3 | 32.7680 kHz | 7.0 x 5.0 x 1.4 | 4 | |
KX201 | kHz Crystal Oscillator | CMOS | 1.8/2.5/3.3 | 32.7680 kHz | 2.0 x 1.6 x 0.75 | 4 | |
KX251 | kHz Crystal Oscillator | CMOS | 1.8/2.5/3.3 | 32.7680 kHz | 2.5 x 2.0 x 0.9 | 4 | |
KX321 | kHz Crystal Oscillator | CMOS | 1.8/2.5/3.3 | 32.7680 kHz | 3.2 x 2.5 x 1.0 | 4 | |
KX501 | kHz Crystal Oscillator | CMOS | 1.8/2.5/3.3 | 32.7680 kHz | 5.0 x 3.2 x 1.2 | 4 |