元器猫(yqmao.cn)为电子工程师和采购提供晶振选型(KHz晶体/MHz晶体/车规晶振/TSX系列/HC-49系列)、振荡器选型(SPXO标准振荡器/TCXO温补振荡器/VCXO压控振荡器/差分振荡器/可编程振荡器/OCXO恒温振荡器)、RTC时钟模块(I²C接口/SPI接口/电表专用)、陀螺仪传感器及IMU惯性导航模组(单轴陀螺仪/6轴IMU/高性能IMU)、传感器选型(霍尔传感器/流量传感器/压力传感器/温湿度传感器)、声表器件(SAW滤波器/SAW谐振器/介质滤波器)、MCU及蓝牙SOC、电源管理IC及MOS管、连接器选型(板对板连接器/FFC/FPC连接器/线对板连接器/USB连接器)、电感选型(功率电感/高频电感/信号电感/车载电感)等品类的参数化筛选服务。支持按品牌(EPSON/SITIME/HONEYWELL/YXC/XKB/SUNLORD/NORDIC)、频率、封装尺寸、负载电容、精度、电压、输出类型等核心参数一键筛选,FAE一对一技术支持,规格书即时下载,授权代理正品保障。
把型号、参数、预算告诉我们
FAE 平均 30 分钟给出匹配方案
含规格书 + 替代料对比 + 交期报价
不匹配?免费重选。
✅ 不匹配免费重选✅ 无后续骚扰✅ 规格书 24 小时必达

内置32.768KHZ/电源切换/定时器功能 时间戳功能 小尺寸 超低功耗0.1µA
Block diagram

Overview
I2C-Bus interface Fast-Mode 400 kHz
The VDD voltage is monitored and it switches to the backup power supply by the automatic operation
Backup power supply switching voltage 1.2 V Min.
Output frequency is selectable from 32.768 kHz, 1024 Hz,1 Hz
Selectable from 244 micro second to 32 years (24 bit 1 ch.)
Timer source clock selectable from 1/60 Hz, 1 Hz, 64 Hz, 4096 Hz
Auto release after interrupt output from /INT pin at timer completes
This operation is auto repeat with a selected cycle, it can be used like a watchdog timer
Time stamp function
8 times stamped from year to 1/256 seconds
The time-stamp trigger inputs from EVIN pin, self-monitoring and I2C software command
EVIN pin has function of chattering-cancel
Alarm function
It is possible program from year to second
Self-monitoring interruption
Crystal oscillation stop. VBAT low, VDD low
Specifications (characteristics)


Pin function
| Signal Name | I / O | Function |
|---|---|---|
| EVIN | input | External event input pin (Pull up/down and polarity are selectable by software) |
| SCL | input | Serial clock input pin |
| SDA | Input / Output | Data input and output pin |
| FOUT | Output | Frequency output (CMOS) (frequency selection: 32.768 kHz / 1024 Hz / 1 Hz) |
| /INT | Output | Interrupts output by Alarm and Timer events (N-ch. open drain) |
| VDD | - | Power-supply pin. It can input the voltage unlike VIO |
| VIO | - | Interface power supply pin. Input to supply the voltage same as a host |
| VOUT | - | Internal voltage output pin. Connect smoothing capacitor of 1.0 µF surely |
| VBAT | - | This is a power supply pin for backup battery Connect a EDLC, secondary battery, a primary battery In the backup voltage range, supplied to IC, from this pin |
| GND | - | Ground pin |
Terminal connection/External dimensions

(Unit: mm)
Footprint (Recommended)

(Unit: mm)
To maintain stable operation, provide a 0.1uF by-pass capacitor
at a location as near as possible to the power source terminal of the crystal product (between Vcc - GND)

Copy product links
Long by picture save/share

