GSMicro Primary Agent AI Offline Voice IC GSM823
- Model：
- GSM823
- Brand：
- GSMicro
- Batch No：
- GSM823,离线语音识别芯片,低功耗语音SOC,个护产品语音芯片,便携电池设备,本地语音唤醒,AI语音芯片,广晟微半导体,UART离线语音芯片,便携按摩仪,暖宫宝语音方案
- Desc：
- GSM823 is high‑integrated low‑power offline voice‑recognition IC by GSMicro. Built‑in DAC/ADC codec, multi‑stage sleep, local wake‑word detection. Fits personal‑care gadgets, portable massagers & home appliances. Datasheet & engineering samples available.
- Stock：
- 500000 只
GSM823 Low-Power Offline Voice Recognition SOC: Highly Integrated Audio Codec, Multi-Level Sleep Mode for Small Home Appliances & Battery-Powered Smart Devices
Keywords:GSM823 | Offline Voice Recognition Chip | Low Power Voice SOC | Voice IC for Small Home Appliances | Local Voice Wake-Up | AI Voice Chip GSMicro
Product Overview:GSM823 is a highly integrated low-power offline voice recognition SOC launched by GSMicro. It supports local voice wake-up and offline command recognition without cloud connection. Built-in high-performance DAC/ADC audio front-end, multi-level low-power sleep modes, and rich peripherals including UART/I2C/SPI/PWM. It is widely adopted for fans, space heaters, water dispensers, smart lighting, portable massagers and other battery-operated smart hardware. Stable voice control is available even under offline network conditions.
⚡ Key Specifications Summary
✔ GSM823 Core Advantages
① Local Offline Recognition – No cloud server required. Voice wake-up and command recognition are processed on-chip. Works reliably without internet connection, protects device privacy, ideal for no-network or weak-network applications.
② Excellent Low-Power Performance – Multi-level sleep architecture optimized for battery-operated portable products, reduces system quiescent current and extends battery runtime.
③ Complete Audio Signal Chain – Integrated high-performance Audio DAC & ADC with superior SNR and dynamic range. Supports MIC capture and voice prompt playback, minimizes external BOM components and reduces system cost.
④ Rich Peripheral Interfaces – Integrated UART, I2C, SPI, SDIO, PWM, Timer, Capture and other peripherals. Directly compatible with host MCU, motor drivers, touch keys and other external circuits.
⑤ Flexible IO Configuration – Software programmable GPIO drive strength, multi-option pull-up/down resistors, compatible with mainstream 3.3V hardware platforms.
⑥ Full Software & Hardware Support – Datasheet, block diagram and reference schematic provided. Application engineering support available to accelerate customer product development.
GSM823 Internal Functional Block Diagram
Crossbar Switch Matrix
Capture Unit
Q-decoder
DAC / ADC Audio Path
Multi-channel PWM
CLK_OUT Clock Output
*Full signal list includes SPI1_CLK, UART0/1, PWMCH, Timer0‑2, CAP0‑2. Complete pin assignment please refer to datasheet V1.1.
Detailed Electrical & Performance Parameters
| Parameter | Min | Typ | Max | Unit | Test Condition |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 | 5.0 | 5.5 | V | - |
| LDO Output Voltage | 2.1 | 3.0 | 3.6 | V | VPWR = 4.2V, 10mA Load |
| IO High Input Voltage | 0.7*IOVDD | - | IOVDD+0.3 | V | IOVDD = 3.0V |
| IO Low Input Voltage | - | - | 0.1*IOVDD | V | IOVDD = 3.0V |
| Audio DAC Output Characteristics | |||||
| Frequency Response | 20 | - | 20K | Hz | VPWR=5.0V, 10kΩ Load, A-weighted |
| Output Swing | - | 740 | - | mVrms | Fin=1KHz/0dB |
| THD+N | - | -77 | - | dB | B/W=20Hz~20kHz |
| SNR | - | 98 | - | dB | A-Weighted Filter |
| Dynamic Range | - | 92 | - | dB | 10k ohm loading |
| Noise Floor | - | 10 | - | uVrms | - |
| Audio ADC Input Characteristics | |||||
| Dynamic Range | - | 72 | - | dB | Gain=23dB, Fsample=44.1KHz |
| SNR | - | 71 | - | dB | Fin=1KHz @57mVrms, A-weighted |
| THD+N | - | -68 | - | dB | B/W=20Hz‑20KHz |
IO Drive & Pull-Up/Down Configuration Note:GPIO drive strength is software selectable at 2mA / 6mA /18mA. Pull-up / pull-down resistors support 10K/100K/1M options. Test condition IOVDD=3.3V, compatible with most mainstream MCU voltage standards.
Pin Definition & Package Outline
Complete pin assignment table and package dimension drawing are available in GSM823 Datasheet V1.1, Revision: 2023‑09 V1.1.
Additional peripherals: SDC (SD Card Controller), Q-decoder quadrature decoder, IRFLT infrared filter, CLK_OUT clock output. GPIO drive strength 2mA/6mA/18mA software configurable, pull-up/down 10K/100K/1M multi-level, 3.3V MCU compatible.
Integrated crossbar switch matrix includes SPI1, SDC, I2C, Q-decoder, UART0/UART1, MCPWM; 8 input & 8 output channels, Timer, Capture, IR filter, clock output.
Main peripheral signals: SPI1_CLK, SPI1_DI, SPI1_DO, SPI1_DAT2, SPI1_DAT3; SD_CLK, SD_CMD, SD_DAT; I2C_CLK, I2C_DAT; Q‑decoder 0/1; UART0_TX/RX; UART1_TX/RX/CTS/RTS; PWMCH0H, PWMCH0L, PWMCH1H, PWMCH1L; M_TMR0CK, M_TMR1CK; Timer0‑2, CAP0‑2, PWM0‑2, CLK_OUT0‑3.
※ Full pin mux and mechanical dimensions, please contact GSMicro for official datasheet PDF.
Document Download Notice
Package drawing, pinout diagram, PCB footprint library included inside V1.1 datasheet.
Visit Official Product Page to request full document package.
Typical Application Schematic
GSM823 Typical System Architecture
GSM823 reference circuit includes power supply loop, IO level matching, MIC analog front-end, DAC post audio amplifier, UART communication and PWM drive section.
Input supply range 2.7V‑5.5V, internal LDO 2.1V‑3.6V powers IO and audio blocks. MIC analog signal feeds ADC channel; DAC output connects to speaker amplifier. UART interface sends recognized commands to external host MCU. PWM controls lighting and motor. Hardware design must follow datasheet schematic, add proper power filtering, analog/digital ground separation to optimize microphone pickup performance.
Typical Applications
Smart Home: Smart lights, bathroom heater, AC controller, curtain motor;
Small Home Appliance: Fan, space heater, water dispenser, air purifier, range hood;
Battery-Powered Portable: Portable massager and low quiescent-current battery devices;
Others: Compact voice controller, DIY voice module, industrial audio prompt unit.
Development Workflow & Technical Support
✅ Hardware: Complete PCB layout following datasheet pinout, package and reference schematic. Optimize analog audio routing and power filtering, match MIC peripheral circuit.
✅ Firmware: Configure wake word and offline command vocabulary, compile voice model and flash into SOC. Chip continuously listens for wake word after power-on. After wake-up, recognized voice command is transmitted via UART to host MCU for motor, light switching action. DAC channel supports voice prompt playback.
✅ Battery-powered products: Enable multi-level sleep & wake-on-voice mode for ultra-low standby power, fast wakeup upon voice trigger.
✅ GSMicro provides full application support including firmware tuning and acoustic optimization.
Drop-In Replacement & Competitive Comparison
| Item | GSM823 | Generic Offline Voice IC |
|---|---|---|
| Operation Mode | Pure local offline recognition, no cloud required | Some models rely on cloud, limited offline command bank |
| Power Consumption | Multi-level sleep, optimized for battery-operated products | Many competitors show high listening/standby current, not battery friendly |
| Audio Performance | DAC SNR typ 98dB, ADC dynamic range 72dB, premium audio specs | Low SNR on some competing chips, poor pickup & playback quality |
| Peripherals | SPI / I2C / UART / SD / Multi-channel PWM, Timer, Capture Unit | Limited peripherals, extra host MCU required, higher BOM cost |
| Technical Service | Datasheet, reference diagram, local FAE support by GSMicro | Slow support response, incomplete reference documents |
GSMicro Summary for GSM823:GSM823 can replace multiple mainstream offline voice recognition ICs for home appliance & smart home designs. It brings advantages in audio performance, low-power sleep, peripheral richness and local FAE support, helping customers reduce BOM cost and shorten product development cycle.
FAQ — GSM823
Q1: Can GSM823 work with battery-powered devices?
A: Yes. GSM823 implements multi-level sleep scheme for lithium battery portable products, reduces quiescent power and extends runtime. Typical use cases include portable massagers, warm waist heaters and personal care battery gadgets.
Q2: What are the pull-up / pull-down resistor options for GPIO?
A: 10K, 100K, 1M three levels available. GPIO drive strength configurable at 2mA / 6mA / 18mA. Test condition IOVDD=3.3V, compatible with most MCU 3.3V systems.
Q3: Is internet connection mandatory for voice recognition?
A: No. GSM823 is fully offline voice solution. Wake-up and command recognition run on-chip without cloud. Works offline and protects user privacy.
Q4: How to get pin table, package drawing and reference schematic?
A: Refer to GSM823 Datasheet V1.1 (2023-09). Visit GSMicro official site www.gs-micro.com and contact sales for full PDF package including pinout, footprint and reference schematic.
Q5: Which interface outputs control commands?
A: UART serial port is the primary interface sending recognition result to external MCU. PWM and GPIO can also output level signals directly for lighting or motor control.
Q6: What parts can replace GSM823 or which ICs are compatible?
A: GSM823 is a drop-in alternative for many mainstream offline voice ICs for home appliance & smart home. Compared with competing voice chips, GSM823 provides better audio performance (DAC SNR typ 98dB, ADC DR 72dB), multi-level low-power sleep, rich peripherals (SPI/I2C/UART/SD/PWM/Timer/Capture) and local FAE service, saving extra host MCU BOM cost. Confirm final replacement with GSMicro FAE based on supply voltage, battery standby requirement, audio playback and peripheral count.
Q7: How to select GSM823 and reduce standby power in battery devices?
A: GSM823 supply 2.7V-5.5V, built-in LDO 2.1V-3.6V for IO/audio domain. Multi-level sleep with voice wake listener is supported. Enable sleep + wake-on-voice mode for battery designs, low standby consumption and fast wakeup, suitable for portable massagers, heating pads and other low-quiescent-current devices.
Q8: Are GSMicro and SGMICRO the same company?
A: No. GSMicro (GSMicro Semiconductor (Shenzhen) Co., Ltd.) and SGMICRO (SG Micro Corp.) are separate independent companies, no equity, brand or business affiliation. GSM823 is a GSMicro branded product.
Ordering & Document Info
Partner & Technical Support — GSMicro Semiconductor (Shenzhen) Co., Ltd.
GSMicro Semiconductor (Shenzhen) Co., Ltd. (GSMicro) founded in 2023, predecessor LUMENCHIP founded in 2010, headquartered in Shenzhen. We focus on mixed-signal IC productization and green intelligent semiconductor solutions.
GSMicro integrates global channel resources with a hybrid business model combining authorized distribution, market forecasting, application design service and one-stop component supply. Self-brand IC and agency lines coexist to serve customers with customized, competitive solutions for sustainable profitability and future product roadmap. Our engineering team delivers unique design consultancy for electronics vertical markets. We develop and supply power management, smart control, signal chain and AI voice chips.
GSMicro’s portfolio covers MCU, power management, AI voice, signal chain and power devices, including voice wake, offline recognition, voice synthesis and edge NLP. Authorized partners include DONGWOON, CR MICRO, CRHJ, APM, COOLSEMI, ANHI, Reasunos, OCX, MassChip, XLSEMI, Hichips, NSIWAY, EGmicro, Ruimeng, ChipWays, AISPEECH, Aerosemi and more.
GSMicro follows the core principle: customer-centric, value-driven. We focus on IC application enablement, powering green smart electronics with reliable distribution and reference design service.
Brand Notice:GSMicro is independent from SGMICRO (SG Micro Corp.). No shared equity, brand or business relation.
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