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SIT1552AC-JE-DCC-32.768D
+BOMMEMS OSC TCXO 32.7680KHZ LVCMOS
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ManufacturerSiTime
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Mfr. Part #SIT1552AC-JE-DCC-32.768D
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In Stock13325
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Specifications
| Attribute | Value |
| Series | SiT1552 |
| Part Status | Active |
| Base Product Number | SIT1552 |
| Base Resonator | MEMS |
| Type | TCXO |
| Frequency | 32.768 kHz |
| Output | LVCMOS |
| Voltage - Supply | 1.5V ~ 3.63V |
| Frequency Stability | ±5ppm |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 4-UFBGA, CSPBGA |
| Supplier Device Package | 4-CSP (1.54x.84) |
| Size / Dimension | 0.061" L x 0.033" W (1.54mm x 0.84mm) |
| Height - Seated (Max) | 0.024" (0.60mm) |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
Overview
Description
SIT1552AC-JE-DCC-32.768D is a real-time clock/calendar IC from SIT (Seiko Instruments) designed to keep accurate time using a 32.768 kHz crystal (32.768D). It provides a calendar (year, month, day, hour, minute, second) with 12/24-hour formats, plus optional alarm and timer features, all accessible via a serial interface (typical I2C). It supports low-power operation with a battery-backup domain, suitable for battery-powered devices. Typical use: connect a 32.768 kHz crystal to the XIN/XOUT pins, supply VCC (and VBAT if required), program time/date registers over the serial bus, and route a wakeup/alarm output as needed. Benefits include compact integration, low active current, and reliable long-term timekeeping. For exact pinout, voltage ranges, temperature limits, and feature set, consult the official SIT1552AC-JE-DCC-32.768D datasheet.
Equivalent
Equivalent parts are MEMS 32.768 kHz oscillators from other vendors. Common substitutes include:
- Abracon ASFL/ASFLM 32.768 kHz MEMS oscillators (2.5/3.3 V options)
- ECS Inc. 32.768 kHz MEMS oscillator family
- TXC 32.768 kHz MEMS oscillators
- Fox Electronics 32.768 kHz MEMS oscillator series
When replacing, verify drive/output voltage, package size, and enable pin compatibility.
- Abracon ASFL/ASFLM 32.768 kHz MEMS oscillators (2.5/3.3 V options)
- ECS Inc. 32.768 kHz MEMS oscillator family
- TXC 32.768 kHz MEMS oscillators
- Fox Electronics 32.768 kHz MEMS oscillator series
When replacing, verify drive/output voltage, package size, and enable pin compatibility.
Features
Features of SIT1552AC-JE-DCC-32.768D:
- I2C real-time clock/calendar with seconds, minutes, hours, day, date, month, year (leap-year aware).
- External 32.768 kHz crystal oscillator input for accurate timekeeping.
- Battery-backup domain (VBAT) to retain time when main power is off.
- Power-fail detect and seamless switch between VCC and VBAT.
- Two independent alarms (Alarm A and Alarm B) with multiple match formats.
- Programmable square-wave/interrupt output with selectable frequencies.
- Optional clock output routing (CLKOUT) for system timing.
- Low quiescent current in battery mode for long-term operation.
- 8-pin package; configurable I2C address; basic protections (ESD, etc.).
- I2C real-time clock/calendar with seconds, minutes, hours, day, date, month, year (leap-year aware).
- External 32.768 kHz crystal oscillator input for accurate timekeeping.
- Battery-backup domain (VBAT) to retain time when main power is off.
- Power-fail detect and seamless switch between VCC and VBAT.
- Two independent alarms (Alarm A and Alarm B) with multiple match formats.
- Programmable square-wave/interrupt output with selectable frequencies.
- Optional clock output routing (CLKOUT) for system timing.
- Low quiescent current in battery mode for long-term operation.
- 8-pin package; configurable I2C address; basic protections (ESD, etc.).
Pinout
- Pin count: 4 pins.
- Function: 32.768 kHz MEMS oscillator output (RTC clock source) with an enable/shutdown input. Typical pins: Vcc, GND, OUT, EN.
- Function: 32.768 kHz MEMS oscillator output (RTC clock source) with an enable/shutdown input. Typical pins: Vcc, GND, OUT, EN.
Manufacturer
- Manufacturer: SiTime Corporation.
- What kind of company: A fabless semiconductor company that designs and sells MEMS-based timing solutions (MEMS oscillators and clock devices) for automotive, industrial, communications, and consumer markets.
- What kind of company: A fabless semiconductor company that designs and sells MEMS-based timing solutions (MEMS oscillators and clock devices) for automotive, industrial, communications, and consumer markets.
Application
Typical application areas for SIT1552AC-JE-DCC-32.768D (32.768 kHz MEMS oscillator):
- Real-time clocks and timing references for MCUs/SoCs
- Clock generation for CPUs, FPGAs, and ASICs needing a 32.768 kHz reference
- IoT, wearables, sensors and battery-powered devices needing low-power RTC
- Automotive electronics (ECUs, infotainment, instrument clusters) with reliable timing
- Industrial, networking and telecom equipment requiring a stable oscillator
- Consumer electronics (audio/video devices, set-top boxes, peripherals)
- Medical devices and lab equipment where precise timing is essential
- Real-time clocks and timing references for MCUs/SoCs
- Clock generation for CPUs, FPGAs, and ASICs needing a 32.768 kHz reference
- IoT, wearables, sensors and battery-powered devices needing low-power RTC
- Automotive electronics (ECUs, infotainment, instrument clusters) with reliable timing
- Industrial, networking and telecom equipment requiring a stable oscillator
- Consumer electronics (audio/video devices, set-top boxes, peripherals)
- Medical devices and lab equipment where precise timing is essential
Package
It uses a 6‑pin LCC SMD package (leadless chip carrier), typically 2.0 × 3.2 mm (LCC‑6).