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STMicroelectronics ST72321B-D/RAIS
- Part No.:
- ST72321B-D/RAIS
- Manufacturer:
- STMicroelectronics
- Category:
- Accessories
- Package:
- Datasheet:
-
ST72321B-D/RAIS.pdf
- Description:
- BOARD DAUGHTER WITH ST72321
- Quantity:
- Payment:
- Shipping:
Inventory:4,350
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Product details
Overview
ST72321B-D/RAIS from Raisonance is a standalone REva daughterboard featuring the ST72F321BAR9 8-bit microcontroller in LQFP64 package, supporting SWIM-based in-circuit debugging and programming via embedded RLink, with on-board clock source selection jumper and oscillator footprint for ST72321B MCU evaluation.
For engineers reviewing the ST72321B-D/RAIS datasheet, ST72321B-D/RAIS pinout, ST72321B-D/RAIS application, or ST72321B-D/RAIS equivalent, this kit enables rapid firmware development, peripheral configuration (ADC, I²C, SPI, UART), and hardware validation for legacy ST7-based industrial control, sensor interface, and appliance MCU designs.
Technical Context
The ST72321B-D/RAIS is a plug-in daughterboard for the REva motherboard, designed exclusively for evaluating the ST72F321BAR9 - an enhanced ST72321B core MCU with 64 KB Flash, 2 KB RAM, and integrated peripherals including 10-bit ADC, 3x timers, I²C, SPI, and UART. It interfaces via ICC (In-Circuit Communication) protocol.
It requires no external power supply, drawing power from the REva motherboard's USB-powered VDD rails (1.8 V, 3.3 V, or 5 V selectable), and supports oscillator configuration via jumper-selectable clock source (internal RC or external crystal up to 8 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| MCU Device | ST72F321BAR9 - factory-programmed variant of ST72321B with enhanced Flash endurance and extended temperature range (-40°C to +85°C) |
| Package | LQFP64 - 64-pin quad flat pack with 0.5 mm pitch, compatible with standard reflow profiles and REva SO-DIMM connector interface |
| Core Architecture | ST7 8-bit CISC core - supports 16-bit addressing, 24-bit linear addressing mode, and single-cycle instruction execution for real-time control |
| Memory | 64 KB Flash / 2 KB RAM - sufficient for medium-complexity firmware with bootloader, communication stack, and sensor processing |
| Peripherals | 10-bit ADC (8 ch), 3x 16-bit timers, I²C, SPI, UART, WDG - enables analog sensing, motor timing, serial comms, and system supervision |
| Debug Interface | ICC (In-Circuit Communication) - low-pin-count 4-wire debug protocol used by RLink for full-speed flash programming and breakpoint debugging |
Availability
ST72321B-D/RAIS is available at Aetrix Electronics and suitable for industrial HMI panels, legacy appliance control units, sensor node prototyping, and ST7 migration projects requiring stable component supply and long-term toolchain continuity.
Supply support for ST72321B-D/RAIS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Raisonance is a French embedded tools developer specializing in MCU evaluation platforms, debug probes, and IDEs for STMicroelectronics, Silicon Labs, and other semiconductor vendors since 1992.
This daughterboard belongs to the REva platform family - designed to unify evaluation across ST7 and STM8 families using interchangeable hardware and shared Ride7 software, reducing tooling cost for multi-MCU development teams.
FAQ
Is ST72321B-D/RAIS compatible with STM8 development?
No. ST72321B-D/RAIS is strictly for ST7-family MCUs and uses ICC protocol. STM8 devices require SWIM-compatible daughterboards (e.g., STM8S105-D/RAIS) and are not electrically or software-interchangeable due to different debug interfaces, memory maps, and peripheral registers.
Does ST72321B-D/RAIS include the REva motherboard?
No. ST72321B-D/RAIS is a standalone daughterboard only. It must be used with the REva motherboard (sold separately as ST7-SK/RAIS or purchased as part of a starter kit) to provide power, I/O headers, EEPROM, RS-232, and USB connectivity.
What software is required to program and debug this board?
Ride7 IDE (v7.x or later) with RLink driver is mandatory. The free version supports up to 2 KB code size; full functionality requires a licensed Ride7 license. RFlasher7 may be used for standalone flash programming but lacks debugging capability.
Can the ST72F321BAR9 on this board be replaced with another ST7 MCU?
No. The ST72F321BAR9 is soldered and not socketed. The board is specifically laid out for this LQFP64 device, including matching decoupling, reset circuitry, and oscillator load capacitance - substitution would require PCB redesign and is not supported.
ST72321B-D/RAIS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Accessory Type:
- Daughter Board
- For Use With/Related Products:
- ST7232X-SK/RAIS, ST72F321BAR9
ST72321B-D/RAIS FAQ
1.How can I place an order for ST72321B-D/RAIS through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72321B-D/RAIS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ST72321B-D/RAIS reliable?
The price and inventory of ST72321B-D/RAIS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72321B-D/RAIS is usually 5 days.
3.What payment methods are accepted for ST72321B-D/RAIS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72321B-D/RAIS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72321B-D/RAIS?
ST72321B-D/RAIS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72321B-D/RAIS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ST72321B-D/RAIS?
For technical support, including ST72321B-D/RAIS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72321B-D/RAIS requirements.
6.How does Aetrix verify that ST72321B-D/RAIS is sourced from the original manufacturer or authorized distributors?
All ST72321B-D/RAIS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ST72321B-D/RAIS meets industry standards.
7.What is the process for return or replacement of ST72321B-D/RAIS?
All ST72321B-D/RAIS units undergo pre-shipment inspection (PSI). If there is an issue with ST72321B-D/RAIS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ST72321B-D/RAIS part is unused and in its original packaging.
Return procedure for ST72321B-D/RAIS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ST72321B-D/RAIS Tags
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