Datasheet4U Logo Datasheet4U.com

HD404654 - 4-Bit Single-Chip Microcomputer

Download the HD404654 datasheet PDF. This datasheet also covers the HD4074654 variant, as both devices belong to the same 4-bit single-chip microcomputer family and are provided as variant models within a single manufacturer datasheet.

General Description

The HD404654 Series is a member of the HMCS400-series of microcomputers designed to increase program productivity with large-capacity memory.

Key Features

  • www. DataSheet4U. com.
  • 27 I/O pins and 5 dedicated input pins  10 high-current output pins: Six 15-mA.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HD4074654_HitachiSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
HD4046212R AS Microcomputer Incorporating a DTMF Generator Circuit Renesas
HD4046212RFS Microcontroller Renesas Technology
HD4046212RH Microcontroller Renesas Technology
HD4046212RTF Microcontroller Renesas Technology
HD404628R AS Microcomputer Incorporating a DTMF Generator Circuit Renesas

Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD404654H 4-Bit Single-Chip Microcomputer
HD404654S 4-Bit Single-Chip Microcomputer
HD404652 4-Bit Single-Chip Microcomputer
HD404652H 4-Bit Single-Chip Microcomputer
HD404652S 4-Bit Single-Chip Microcomputer

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
HD404654 Series 4-Bit Single-Chip Microcomputer Rev. 7.0 Sept. 1999 Description The HD404654 Series is a member of the HMCS400-series of microcomputers designed to increase program productivity with large-capacity memory. Each microcomputer has a high-precision dual-tone multi-frequency (DTMF) generator, three timers, serial interface, voltage comparator, and input capture circuit. The HD404654 Series includes three chips: the HD404652 with 2 k-word ROM; the HD404654 with 4 kword ROM; and the HD4074654 with 4 k-word PROM (ZTAT™ version). The HD4074654 is a PROM version (ZTAT™ microcomputer). A program can be written to the PROM by a PROM writer, which can dramatically shorten system development periods and smooth the process from debugging to mass production.