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Renesas HD6435348AQ00X
- Part No.:
- HD6435348AQ00X
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
HD6435348AQ00X.pdf
- Description:
- MICROCONTROLLER, 16-BIT, H8 CPU
- Quantity:
- Payment:
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Inventory:376
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Product details
Overview
HD6435348AQ00X from Renesas Electronics is a 16-bit CMOS microcontroller unit (MCU) in the H8/534 family, featuring an orthogonal CPU core, 32 KB mask ROM, 2 KB on-chip RAM, 16 MHz max operating frequency (5 V), and integrated peripherals including dual SCI, 10-bit 8-channel ADC, three 16-bit FRT timers, PWM, watchdog, DTC, and 57 I/O pins - deployed in industrial motor control and embedded instrumentation.
For engineers reviewing the HD6435348AQ00X datasheet, HD6435348AQ00X pinout, HD6435348AQ00X application, or HD6435348AQ00X equivalent, key selection criteria include mask-ROM configuration, 80-pin TQFP (TFP-80C) package compatibility, 5 V ±10% supply operation, single-chip mode execution, and support for expanded minimum/maximum addressing modes up to 64 KB or 1 MB.
Technical Context
The HD6435348AQ00X implements the H8/534 CPU core with a 16-bit internal architecture, highly orthogonal instruction set enabling independent specification of addressing mode and data size per instruction, and support for C-language-optimized short-format instructions. It operates in five configurable modes including single-chip, expanded minimum (64 KB address space), and expanded maximum (1 MB address space).
On-chip subsystems include a bidirectional Data Transfer Controller (DTC) for memory-to-I/O transfers independent of CPU intervention, a Wait-State Controller (WSC) for external memory timing adaptation, and dual Serial Communication Interfaces (SCI) supporting full-duplex asynchronous/synchronous communication with dedicated baud-rate generators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/534 16-bit orthogonal architecture with eight 16-bit general registers and five 8-bit/two 16-bit control registers |
| ROM/Flash | 32 KB mask ROM - factory-programmed, non-field-reprogrammable, enables secure firmware deployment |
| RAM | 2 KB on-chip high-speed RAM - supports zero-wait-state execution for time-critical ISR handling |
| Max Operating Frequency | 16 MHz at 5 V ±10% - requires 32 MHz oscillator input with internal divide-by-2 clock generator |
| ADC | 10-bit resolution, 8-channel SAR converter with sample-and-hold and external trigger capability |
| I/O Pins | 57 programmable I/O pins across six 8-bit ports, one 5-bit port, one 4-bit port, plus eight input-only pins |
| Timers | Three 16-bit free-running timers (FRT), one 8-bit timer, three PWM channels with 1/250 duty resolution |
Pinout & Package
HD6435348AQ00X is housed in an 80-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, designated TFP-80C per Renesas documentation. This RoHS-compliant surface-mount package measures 12 mm × 12 mm × 1.4 mm and supports reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual 5 V ±10% supply pins with dedicated analog/digital ground separation for noise-sensitive ADC operation |
| XTAL, EXTAL | Crystal oscillator interface | Supports 32 MHz crystal input; internal divide-by-2 generates 16 MHz system clock for CPU and peripherals |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and initializes peripheral control registers to default states |
| IRQ0–IRQ5, NMI | External interrupt inputs | Seven vectored interrupt sources with eight priority levels configurable via INTC registers |
| TXD0/TXD1, RXD0/RXD1 | SCI serial data I/O | Dual full-duplex UART/USART interfaces with independent baud-rate generators and framing error detection |
| AD0–AD7 | Analog input channels | Eight dedicated ADC input pins supporting single or scan conversion modes with external trigger synchronization |
Key Features
| Feature | Design Value |
|---|---|
| Data Transfer Controller (DTC) | Enables autonomous memory-to-peripheral data movement without CPU cycles - critical for real-time sensor acquisition and DMA-like throughput |
| Free-Running Timers (FRT) | Three independent 16-bit counters with input-capture and output-compare registers - supports precise event timing, pulse-width measurement, and waveform generation |
| Software Standby Mode | Reduces power consumption to microamp range while preserving RAM contents and allowing wake-up via external interrupt or RTC - ideal for battery-backed systems |
| Expanded Maximum Mode | Enables 1 MB external address space access via multiplexed AD0–AD15 bus - supports external memory expansion for larger code/data footprints |
| SCI Baud-Rate Generator | Dedicated hardware divider per channel eliminates software overhead for dynamic baud rate changes - ensures deterministic serial timing in multi-protocol environments |
Applications
| Industrial Motor Control | Embedded Instrumentation |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Primary MCU executing PID algorithms, managing PWM outputs, sampling current/voltage feedback via ADC, and communicating fault status over SCI. Use Value: Integrated 16-bit FRT timers enable sub-microsecond PWM edge placement; 10-bit ADC provides sufficient resolution for current sensing with ±0.5% linearity. | Use Scenario: Portable multimeter with auto-ranging, data logging, and USB-to-SCI bridge interface. IC Role / Device Role / Timing Role: System controller handling front-panel input scanning, LCD drive, ADC sequencing, and serial protocol translation to host PC. Use Value: Dual SCI channels allow simultaneous debug console (SCI0) and host communication (SCI1); 2 KB RAM accommodates real-time sample buffering and command parsing. |
| Factory Automation I/O Module | Energy Metering Front-End |
Use Scenario: DIN-rail mounted digital I/O module with 16-channel isolated inputs and 8-channel relay outputs. IC Role / Device Role / Timing Role: Central processor managing opto-isolator status polling, relay timing control, Modbus RTU over SCI, and watchdog supervision. Use Value: 57 GPIO pins directly support 24 discrete I/O lines with configurable pull-up/down; DTC offloads periodic input scanning from CPU. | Use Scenario: Residential smart meter measuring voltage, current, and power factor using shunt-based sensing. IC Role / Device Role / Timing Role: Metrology controller acquiring synchronized voltage/current samples, computing RMS and harmonics, and storing billing data in external EEPROM. Use Value: External trigger capability on ADC allows precise phase-aligned sampling; 32 KB mask ROM securely stores calibrated metrology firmware and safety-critical routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD6435348SF | Same H8/534 core, 32 KB mask ROM, 2 KB RAM, but in 80-pin QFP (FP-80A) package with 0.65 mm pitch | Requires PCB layout change due to different footprint and pitch; no electrical or functional difference | Select HD6435348SF only when legacy board design uses FP-80A or thermal/mechanical constraints favor QFP over TQFP |
| HD6435348STF | Identical specifications and TFP-80C package; suffix "STF" denotes same product as "AQ00X" per Renesas naming convention (A = A-mask, Q00X = TQFP variant) | No functional or mechanical distinction - "STF" and "AQ00X" are dual-markings for identical device | HD6435348STF is functionally interchangeable with HD6435348AQ00X; verify marking consistency with Renesas wafer lot documentation |
Compared with HD6435348SF, HD6435348AQ00X offers direct drop-in compatibility on TQFP-80 layouts and superior thermal dissipation; versus HD6435348STF, it represents the same silicon with identical timing, power, and peripheral behavior - differing only in traceability labeling.
Availability
HD6435348AQ00X is available at Aetrix Electronics and suitable for industrial motor control, embedded instrumentation, and factory automation I/O modules requiring stable component supply, long-term lifecycle support, and verified mask-ROM firmware integrity.
Supply support for HD6435348AQ00X includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The H8/534 product line delivers cost-optimized 16-bit MCUs targeting resource-constrained embedded systems requiring deterministic real-time response, low-power operation, and integrated analog/mixed-signal peripherals.
FAQ
What is the operating voltage range for HD6435348AQ00X?
The HD6435348AQ00X operates within a supply voltage range of 5 V ±10%, meaning 4.5 V to 5.5 V. It is not rated for 3 V or 2.7 V operation - those variants use distinct part numbers (e.g., HD6435348SVF10). This voltage specification ensures stable timing and ADC accuracy under industrial power rail conditions, and must be maintained during all active and standby modes of HD6435348AQ00X.
Does HD6435348AQ00X support external memory expansion?
Yes, HD6435348AQ00X supports external memory expansion in Expanded Maximum Mode, providing a 1 MB address space via multiplexed AD0–AD15 address/data bus and dedicated control signals (AS, DTACK, etc.). This mode requires configuration of the mode pins and wait-state setup via the Wait-State Controller (WSC) to interface with slower SRAM or EPROM. HD6435348AQ00X retains full internal ROM/RAM functionality while accessing external memory.
What package type is used for HD6435348AQ00X?
HD6435348AQ00X uses an 80-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, officially designated TFP-80C by Renesas. This package features gull-wing leads, 12 mm × 12 mm body size, and is RoHS-compliant. It differs from the 84-pin PLCC (CP-84) and 84-pin windowed LCC (CG-84) variants in both pin count and mounting method - HD6435348AQ00X is surface-mount only.
How many serial communication interfaces does HD6435348AQ00X include?
HD6435348AQ00X integrates two full-duplex Serial Communication Interfaces (SCI0 and SCI1), each supporting both asynchronous (UART) and synchronous (SPI-like) modes with independently programmable baud rates. Each SCI includes dedicated transmit/receive shift registers, status flags, and interrupt capability. These interfaces enable concurrent debugging (SCI0) and fieldbus communication (SCI1) without CPU polling overhead in HD6435348AQ00X designs.
Is HD6435348AQ00X pin-compatible with other H8/534 family members?
HD6435348AQ00X is pin-compatible with other 80-pin TQFP variants in the H8/534 family (e.g., HD6435348STF), but not with 84-pin PLCC or LCC versions. Pin compatibility is limited to identical package types and mask/PROM variants sharing the same pin assignment - differences in ROM size (e.g., H8/536's 62 KB) or peripheral count do not affect pinout. Always verify signal mapping against the specific HD6435348AQ00X pin diagram before board reuse.
HD6435348AQ00X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
HD6435348AQ00X FAQ
1.How can I place an order for HD6435348AQ00X through Aetrix?
Please submit a Request for Quotation (RFQ) for HD6435348AQ00X on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HD6435348AQ00X reliable?
The price and inventory of HD6435348AQ00X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD6435348AQ00X is usually 5 days.
3.What payment methods are accepted for HD6435348AQ00X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD6435348AQ00X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD6435348AQ00X?
HD6435348AQ00X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD6435348AQ00X order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HD6435348AQ00X?
For technical support, including HD6435348AQ00X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD6435348AQ00X requirements.
6.How does Aetrix verify that HD6435348AQ00X is sourced from the original manufacturer or authorized distributors?
All HD6435348AQ00X products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HD6435348AQ00X meets industry standards.
7.What is the process for return or replacement of HD6435348AQ00X?
All HD6435348AQ00X units undergo pre-shipment inspection (PSI). If there is an issue with HD6435348AQ00X, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HD6435348AQ00X part is unused and in its original packaging.
Return procedure for HD6435348AQ00X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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