FT51x Series - 8 bits MCU with 8051-compatible core

8 bits MCU with 8051-compatible core with features including multiple ADCs, USB2.0 Full Speed device, and USB hub function

On phase-out - LTB (NCNR) before 28th October 2018

Standard features:

  • 8051 peripheral set
  • Up to 16 Digial IO
  • USB DFU Bootloader
  • Integrated power-on-reset circuit
  • +5V single supply operation
  • Internal 3.3V/1.8V LDO regulators
  • Low operating and suspend current 20 mA (active) and 150 uA (suspend)
  • Range of compact packaging options available: 48-pin WQFN, 44-pin LQFP, 32-pin WQFN and 28-pin SSOP

The FT51 series of 8-bit micro-controllers is on phase-out - last orders (NCNR) before 28th October 2018.

  • Industry compatible 8051 core running at a maximum frequency of 48MHz.
  • 8 KB of data memory
  • 16 KB of multi-time programmable (MTP) memory
  • 16 KB of shadow memory for fast read access by the core.
  • USB 2.0 Full Speed hub controller allowing cascading of multiple FT51A devices
  • USB 2.0 Full Speed device controller compatible to FT12 series
  • Supports up to 8 bi-directional endpoints with 2 x 1 KB USB endpoint buffers
  • Max packet size is 504 bytes for USB isochronous endpoint and 64 bytes for control / bulk / interrupt endpoint
  • Double buffer scheme for any endpoint, increases data transfer throughput
  • Fully integrated clock generation with no external crystal required
  • Data transfer rates from 300 baud to 3M baud (RS422, RS485, and RS232) at TTL levels
  • PWM Controller
  • UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity
  • USB Battery Charger Detection allowing optimized charging profile
  • Supports DMA operation
  • I2C Master & Slave functionality
  • SPI Master & Slave functionality
  • 245 FIFO module provides a simple FIFO interface to transmit and receive data
  • Timer and Watchdog
  • Up to 16 dedicated digital IO pins
  • Up to 16 multiplexed analogue / digital IO pins
  • Support ADC function on analogue IO pins
  • IO Mux control for maximum flexibility in pin selection
  • Configurable IO pin output drive strength; 4 mA (min) and 16 mA (max)
  • +5V Single Supply Operation
  • Internal 3.3V/1.8V voltage regulators
  • Integrated power-on-reset circuit
  • Low operating and suspend current; 20 mA (active) and 150 uA (suspend)
  • Extended operating temperature range; -40 to 85⁰C
  • Available in compact Pb-free, RoHS compliant packages:
    • 48-pin WQFN
    • 44-pin LQFP
    • 32-pin WQFN
    • 28-pin SSOP
Part Number Description Pack Size
FT51AL-R 44 Pin LQFP, body 10x10x1.4 mm, pitch 0.8mm
Reel of 1000
FT51AL-T 44 Pin LQFP, body 10x10x1.4 mm, pitch 0.8mm
Tray of 160
FT51AQ-R
48 Pin QFN, body 7x7x0.75 mm, pitch 0.5mm
Reel of 3000
FT51AQ-T 48 Pin QFN, body 7x7x0.75 mm, pitch 0.5mm
Tray of 490
FT51BQ-R 32 Pin QFN, body 6x6x0.75 mm, pitch 0.5mm,
Reel of 3000
FT51BQ-T 32 Pin QFN, body 6x6x0.75 mm, pitch 0.5mm
Tray of 490
FT51CS-R 28 Pin SSOP, body 10.2x5.3x1.75 mm, pitch 0.65mm
Reel of 2000
FT51CS-U 28 Pin SSOP, body 10.2x5.3x1.75 mm, pitch 0.65mm
Tube of 47

The FT51 series of 8-bit micro-controllers is on phase-out - last orders (NCNR) before 28th October 2018.

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Last updated: 28 June 2018