Description
The 3823 Group is supported only for customers who have already adopted these products.
| Part Number | Status | Samples | Stock | RoHS | Package | Bit Size | RAM (KB) | Lead Count (#) | Operating Freq (Max) (MHz) | CPU | LVD or PVD | DMA | Timer | ADC | Ethernet | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M38234G4-XXXFP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | QFP | 8 | 0.625KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38234G4-XXXHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 0.625KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38234G4FP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | QFP | 8 | 0.625KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38234G4HP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 0.625KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38235G6-XXXFP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | QFP | 8 | 0.75KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38235G6-XXXHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 0.75KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38235G6FP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | QFP | 8 | 0.75KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38235G6HP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 0.75KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38238G8-XXXFP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | QFP | 8 | 1.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38238G8-XXXHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 1.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38238G8FP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | QFP | 8 | 1.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38238G8HP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 1.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38239GC-XXXFP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | QFP | 8 | 2KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38239GC-XXXHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 2KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38239GCFP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | QFP | 8 | 2KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M38239GCHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 2KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M3823AGF-XXXFP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | QFP | 8 | 2.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M3823AGF-XXXHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 2.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M3823AGFFP#U0 | Obsolete | N/A | In Stock | RoHS:EN RoHS:JA | QFP | 8 | 2.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
| M3823AGFHP#U0 | Obsolete | N/A | Out of Stock | RoHS:EN RoHS:JA | LFQFP | 8 | 2.5KB | 80# | 10MHz | 740 | No | No | 8-bit x 3-ch, 16-bit x 2-ch | 10-bit x 8-ch | No | -20 to +85 |
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- Product Change Notice
- Product Change Notice
- Product Change Notice
- Application NoteAI-generated Summary: The document explains the 8-bit A/D conversion process and operation for the 3823 Group MCU. It details how the 8-bit mode uses the high-order bits of a 10-bit register for conversion results, with voltage comparison steps and timing for conversion completion. The A/D converter compares input voltage against reference voltage bit by bit, storing results in registers and generating interrupts upon completion. Conversion times vary based on clock selection and mode.
- Application NoteAI-generated Summary: The 3823 Group MCU supports two power-saving modes: stop mode and wait mode. In stop mode, executing the STP instruction halts the main clock, sub-clock, and on-chip oscillator, stopping the CPU and peripheral functions to reduce power consumption. I/O ports, timers, serial I/O, A/D converter, RAM, CPU registers, and SFRs hold their states during stop mode, with some exceptions like initialization of CPU registers upon reset. The LCD enable bit is forcibly cleared in this mode.
- Application NotePDF 161 KB REJ05B0861-0200 Rev.2.00 Aug 08, 2007AI-generated Summary: The document details the Special Function Registers (SFR) of the 3823 Group microcontrollers, explaining register structures, bit definitions, and access types. It covers Port Pi registers and their direction registers, describing bit functions, read/write behaviors, and reset states. The document clarifies how input/output modes affect pull-up and pull-down resistor connections and provides specific address mappings for registers.
- Document
- Application NotePDF 114 KB REJ05B1081-0100 Rev.1.00 Mar 30, 2007AI-generated Summary: The document explains the reset circuit operation for the 3823 Group MCU, detailing the reset sequence triggered by holding the RESET pin low for at least 2 microseconds when power voltage is stable. It describes the release of reset after the RESET pin goes high and 8192 clock cycles pass, initiating the system clock and program start. It also provides connection examples using reset ICs, including a power-on reset circuit and a RAM backup system that switches to backup mode upon power drop detection.
- Application NoteAI-generated Summary: The document explains how to use the Key Scan function on the 3823 Group MCU with an 8 MHz oscillation frequency. It details a 4x4 key matrix input scanned every 2.5 ms, with scan outputs on ports P24 to P27 and key inputs on P20 to P23. The key input registers, RAM definitions, and flag settings are described, including handling simultaneous key presses and fixed key input detection after three matches. Relevant register settings for ports, timers, and interrupts are also provided.Related Files:
- Application NoteAI-generated Summary: The ROM Correction Function allows partial correction of programs stored in ROM by redirecting execution to a correction program stored in RAM. Users set the start address of the instruction to be corrected in specific ROM correction address registers. When the program counter matches these addresses, execution branches to the RAM correction program. Two correction blocks are available, controlled by an enable register. The correction program must use a JMP instruction to return to the main program. Proper initialization includes transferring correction data from external memory like EEPROM to RAM.Related Files:
- Technical Update
Recommended Documents (1)
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- Application NoteAI-generated Summary: The document explains the 8-bit A/D conversion process and operation for the 3823 Group MCU. It details how the 8-bit mode uses the high-order bits of a 10-bit register for conversion results, with voltage comparison steps and timing for conversion completion. The A/D converter compares input voltage against reference voltage bit by bit, storing results in registers and generating interrupts upon completion. Conversion times vary based on clock selection and mode.
- Application NoteAI-generated Summary: The 3823 Group MCU supports two power-saving modes: stop mode and wait mode. In stop mode, executing the STP instruction halts the main clock, sub-clock, and on-chip oscillator, stopping the CPU and peripheral functions to reduce power consumption. I/O ports, timers, serial I/O, A/D converter, RAM, CPU registers, and SFRs hold their states during stop mode, with some exceptions like initialization of CPU registers upon reset. The LCD enable bit is forcibly cleared in this mode.
- Application NotePDF 161 KB REJ05B0861-0200 Rev.2.00 Aug 08, 2007AI-generated Summary: The document details the Special Function Registers (SFR) of the 3823 Group microcontrollers, explaining register structures, bit definitions, and access types. It covers Port Pi registers and their direction registers, describing bit functions, read/write behaviors, and reset states. The document clarifies how input/output modes affect pull-up and pull-down resistor connections and provides specific address mappings for registers.
- Application NotePDF 114 KB REJ05B1081-0100 Rev.1.00 Mar 30, 2007AI-generated Summary: The document explains the reset circuit operation for the 3823 Group MCU, detailing the reset sequence triggered by holding the RESET pin low for at least 2 microseconds when power voltage is stable. It describes the release of reset after the RESET pin goes high and 8192 clock cycles pass, initiating the system clock and program start. It also provides connection examples using reset ICs, including a power-on reset circuit and a RAM backup system that switches to backup mode upon power drop detection.
- Application NoteAI-generated Summary: The document explains how to use the Key Scan function on the 3823 Group MCU with an 8 MHz oscillation frequency. It details a 4x4 key matrix input scanned every 2.5 ms, with scan outputs on ports P24 to P27 and key inputs on P20 to P23. The key input registers, RAM definitions, and flag settings are described, including handling simultaneous key presses and fixed key input detection after three matches. Relevant register settings for ports, timers, and interrupts are also provided.Related Files:View More (32)
Application Notes & White Papers (32)
- Product Change Notice
- Product Change Notice
- Product Change Notice
Product Notices (PCN, EOL, etc) (3)
- Technical Update
- Technical UpdatePDF 18 KB TN-M740-22-0012 Dec 01, 2000
Errata & Technical Updates (4)
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- IDE and Coding ToolRenesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
- Compiler/AssemblerAssembler Package for 740 Family, * Comes with High-performance Embedded Workshop and the simulator debugger.
- Compiler/AssemblerC Compiler Package for 740 Family. High-performance Embedded Workshop and Simulator debugger included.
- EmulatorEmulator for M16C, 7700, 740 Families [Overseas Standards Compliant]. Support for 20MHz-or-less operation of target MCU.
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Flash Development Toolkit]
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Flash Development Toolkit] [Support MCU/MPU and devices: SuperH RISC engine, R8C, M16C, H8SX, H8S, H8, 740]
- Programmer (Unit/SW)Flash memory programming software. [Support MCU/MPU and devices: SuperH RISC engine, RX, R8C, M16C, H8SX, H8S, H8, 740]
- Programmer (Unit/SW)Connected with a Flash Programmer, these IC Socket Boards enable reprogramming of the on-chip Memory before mounting.
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- SimulatorSimulator Debugger for 740 Family [Support IDE : High-performance Embedded Workshop] (Note: This product is included in Compiler Package and Assembler Package, and is not available separately.)
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- IDE and Coding ToolRenesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
- Compiler/AssemblerAssembler Package for 740 Family, * Comes with High-performance Embedded Workshop and the simulator debugger.
- Compiler/AssemblerC Compiler Package for 740 Family. High-performance Embedded Workshop and Simulator debugger included.
- EmulatorEmulator for M16C, 7700, 740 Families [Overseas Standards Compliant]. Support for 20MHz-or-less operation of target MCU.
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Flash Development Toolkit]View More (12)
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Support Communities
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Data Flash Access Library (T04) integration into E2Studio GNU
Hi, Does anyone have success by using the new Data Flash Library functions for the GNU compiler in E2studio ? I get these faults when I try to compile: In file included from ../src/STrfHost.c:31:0:../src/pfdl.a:1:1: error: expected identifier or ...
Apr 8, 2013 -
RZ-A1H USB HMSC Issue
I am using R7S721000VCFP and using RSKRZA1-BSP-V1.3.0 with required modification as per my hardware. I am facing USB HMSC problem on USB0 channel, Pls find below logs $ $ usb 1-1: new full-speed USB device number 2 using r8a66597_hcdusb 1-1: device descriptor ...
Jul 29, 2017 -
RZ/G2H SATA Link Down: Troubleshooting Custom Board Initialization Errors
... 351865] cfg80211: Loading compiled-in X.509 certificates for regulatory database [ 5.583147] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null) [ 11.382300] Board extended Data download address: 0x0 [ 114.507754] ata1: link resume succeeded after 1 retries [ 114.620139] ata1: SATA link down (SStatus 0 SControl ...
Mar 7, 2026
Knowledge Base
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(3823)Are latch and timer written to during write in and timer value read out?
It depends on the type of timer, as detailed below: Timers 1, 3 and Y The timer and latch are written to simultaneously and the timer count value is read. Timers 2 and X The user can choose to have the value written only to the latch or to both ...
Mar 1, 2005 -
Can programming tools for 3822 Group used for programming 3823 Group?
No. Please use the dedicated 3823 Group programming tools. (#105524)
Dec 1, 2005 -
(3823) What to know about MCU's current consumption using LCD drive circuit?
For the power supply current ICC of the MCU itself: The current consumption depends on the supply voltage, oscillation frequency, operating mode (clock frequency dividing ratio), frame frequency, and the number of SEG/COM. The higher frame frequency or the more SEG/COM there are, the higher current ...
Aug 5, 2009
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