The algocraft WriteNow! is a universal in-system programmer designed for production-floor and ATE (Automated Test Equipment) environments. It programs microcontrollers, SoCs, and serial memories directly on the assembled PCB via a broad set of industry-standard protocols, with galvanic isolation on the RS-232 and low-level control interfaces to protect both the programmer and the target system from ground-loop noise.

What host interfaces does the WriteNow! support?

The programmer connects to the host PC or ATE controller through three built-in interfaces: USB 2.0 for direct plug-and-play operation, galvanically isolated RS-232 for legacy ATE and electrically noisy environments, and isolated LAN/Ethernet for networked production cells. All interfaces share an ASCII-based command protocol, allowing integration with custom test executive software written in Visual C, C#, LabView, or any language capable of serial or socket communication.

How many devices can the WriteNow! program in parallel?

The WriteNow! family spans four channel configurations from single-site benchtop use to high-throughput multi-site production:

Each channel operates independently, enabling mixed-target panels to be programmed in a single pass without reconfiguration.

What protocols and voltage ranges are supported?

The FPGA-based I/O front end supports over 25 programming protocols including JTAG, SWD, cJTAG, UART, SPI, QSPI, BDM, SWIM, I2C, ICSP, PDI, UPDI, SBW, and DAP. The programmable target power supply delivers 1.5–12.5 V DC for Vcc (up to 12 V Vpp where required by legacy devices), and the I/O signalling level is independently adjustable from 1.6–5.5 V. This voltage range allows a single WriteNow! to handle 1.8 V, 3.3 V, and 5 V targets without external level shifters.

Can the WriteNow! run without a host PC?

Yes. Programming images and job parameters are stored on an internal memory card. In standalone mode, the programmer is triggered by a hardware START signal, a TTL control line, or an ASCII command string — no operator PC is needed on the production line. This capability is particularly valuable in high-volume manufacturing where minimizing operator interaction reduces cycle time and eliminates a class of programming errors.