The H8SX/1648A, H8SX/1648L Group is supported only for the customers who have already adopted any of the products. For new adoption, please consider other products such as RX651 Group.

Main Solutions

  • CPU
    • 32-bit bus
    • Power supply voltage: 3.0-3.6 V
    • Maximum operating frequency: 50 MHz
    • Executes basic instructions in 1 state
    • 32-bit internal multiplier/ divider
  • Internal memory
    • H8SX/1642AF,H8SX/1642LF
      (Flash 256 KB, RAM 24 KB)
    • H8SX/1644AF,H8SX/1644LF
      (Flash 512 KB, RAM 40 KB)
    • H8SX/1648AF,H8SX/1648LF
      (Flash 1024 KB, RAM 56 KB)
  • Bus controller (BSC)
  • DMA controller (DMAC) : 4 ch
  • Data transfer controller (DTC)I/O ports: 97 input/output ports, 13 inputports
  • 16-bit timer pulse unit (TPU) : 12 ch
  • Programmable pulse generator (PPG) x 2 units
  • 8-bit timers (TMR) : 8 ch
  • Watchdog timer (WDT)
  • User break controller (UBC)
  • New A/D converters (High-speed A/D converters 4 ch x 3 units): 12ch
  • D/A converters: 2 ch
  • Serial communication interface(SCI) : 7 ch
    • Asynchronous/ clocked synchronous
    • Smart card I/F : 7 ch
    • Hi-speed SCI (720kbps) : 2 ch
  • Boundary scan function supported
  • I2C bus: 4 ch
    • I2C supports 5V input with only channel 2 and 3
  • LVD/POR* *H8SX/1648L group only.
  • Operating modes: 7 operating modes
  • Package
    • LQFP-144V (FP-144LV)
  • Development environment
    • Full Emulator (E6000H)*
    • On-chip emulator (E10A-USB)

*H8SX/1648Agroup only.

H8SX/1648Lgroup does not support Full Emurator. However, Full Emulator of H8Sx/1648Agroup can be used for Functional evaluation except LVD/POR.

Below you will find information to support the development of your application.
You can find an explanation of orderable part numbers here.


Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.
Video Watch videos related to this product.


Hardware Design Support

Title Description
IBIS IBIS standard simulation data is required for high-speed board design and can be used to run simulations to examine and troubleshoot issues such as waveform reflection, ringing, and so on, before producing the actual board.
BSDL BSDL is a data input format supported by most IEEE 1149.1 (JTAG)-compliant tools. The automatic test pattern generation (ATPG) and automatic test equipment functions of these tools facilitate testing.
Reference oscillator circuit constants Oscillator circuit constants provided for reference by Murata Manufacturing, Kyocera and Nihon Dempa Kogyo.
You can filter the sample codes and application notes that are displayed using the below filters.

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