Renesas UPD70F3033BGC-8EU-A

Overview

UPD70F3033BGC-8EU-A from Renesas Electronics is a 32-bit V850/SB1 single-chip microcontroller with 256 KB on-chip flash memory, 16 KB RAM, 83 I/O lines, and integrated peripherals including UART0/1, CSI0–CSI4, I²C0/I²C1 (Y-version), 10-bit 12-channel ADC, six DMA channels, and multiple timer/counters - designed for AV equipment such as car audio, TV, and VCR systems.

For engineers reviewing the UPD70F3033BGC-8EU-A datasheet, UPD70F3033BGC-8EU-A pinout, UPD70F3033BGC-8EU-A application, or UPD70F3033BGC-8EU-A equivalent, this page delivers verified technical context, package mapping, functional pin roles, real-world use cases, and validated alternative options aligned to Renesas' documented V850/SB1 family specifications.

Technical Context

The UPD70F3033BGC-8EU-A implements the V850/SB1 32-bit RISC CPU core with 74 instructions, 50 ns minimum instruction execution time at 20 MHz internal clock, and 16 MB linear address space. It supports external memory expansion via 16-bit multiplexed AD bus (AD0–AD15), 21-bit address bus (A1–A21), and dedicated bus control signals (RD, WRH/WRL, ASTB, DSTB).

Its peripheral set includes two 16-bit timers (TM0/TM1), six 8-bit timers (TM2–TM7), watchdog and watch timers, real-time output port (RTP0–RTP7), key return inputs (KR0–KR7), and dual UARTs with baud rate clock support (ASCK0/ASCK1). Flash memory enables in-system programming for rapid prototyping and small-batch production.

Key Specifications

Pinout & Package

UPD70F3033BGC-8EU-A is housed in a 100-pin plastic LQFP (fine pitch, 14 × 14 mm) package with 0.5 mm lead pitch. Pin functions are fully defined per Renesas Data Sheet U14734EJ3V0DS, including dedicated power domains (EVDD/EVSS, AVDD/AVSS, BVDD/BVSS) and dual crystal interfaces (X1/X2 for main clock, XT1/XT2 for sub-clock).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit microcontroller applications.

Compared with UPD70F3033BGC-8EU-A, UPD70F3033AGC-8EU removes I²C support but retains full flash programmability and identical packaging, while UPD70F3032AYGC-8EU increases flash and RAM capacity for more demanding applications - both share the same 100-pin LQFP footprint and core architecture.

Availability

UPD70F3033BGC-8EU-A is available at Aetrix Electronics and suitable for car audio systems, digital TV tuners, home theater receivers, and set-top box front-end controllers requiring stable component supply across long-lifecycle consumer electronics programs.

Supply support for UPD70F3033BGC-8EU-A 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 Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The UPD70F3033BGC-8EU-A belongs to the V850/SB1 microcontroller family, engineered specifically for cost-sensitive, high-reliability AV equipment requiring flash-based flexibility, rich peripheral integration, and robust real-time I/O control.

FAQ

What is the core architecture and instruction cycle time of the UPD70F3033BGC-8EU-A?

The UPD70F3033BGC-8EU-A features the V850/SB1 32-bit RISC CPU core with 74 instructions and a minimum instruction execution time of 50 ns at 20 MHz internal clock frequency. Its 32×32-bit register file, 16 MB linear address space, and support for saturation arithmetic and bit manipulation make it optimized for real-time AV control tasks. The UPD70F3033BGC-8EU-A executes instructions with deterministic timing critical for audio synchronization and IR decoding.

Does the UPD70F3033BGC-8EU-A support I²C communication?

Yes, the UPD70F3033BGC-8EU-A supports dual I²C interfaces (I²C0 and I²C1) as confirmed by its Y-suffix designation and pin assignments (SCL0/SCL1, SDA0/SDA1 on P10/P12/P20/P22). These are active only in Y-variant parts and enable direct connection to temperature sensors, EEPROMs, and display controllers. The UPD70F3033BGC-8EU-A's I²C modules comply with standard mode (100 kbps) and fast mode (400 kbps) specifications per Renesas documentation.

What is the function of the VPP pin on the UPD70F3033BGC-8EU-A?

The VPP pin on the UPD70F3033BGC-8EU-A is the programming voltage input used exclusively during flash memory write and verify operations, requiring 21 V DC. In normal operation, VPP must be connected to VSS (ground) as specified in Renesas Data Sheet U14734EJ3V0DS. This pin is not used for runtime functionality - its sole purpose is enabling in-system flash programming, distinguishing the UPD70F3033BGC-8EU-A from mask ROM variants like UPD703033AGC-8EU.

How many analog input channels does the UPD70F3033BGC-8EU-A include, and what is their resolution?

The UPD70F3033BGC-8EU-A integrates a 10-bit successive approximation register (SAR) analog-to-digital converter with 12 input channels (ANI0–ANI11), covering ports P70–P77 and P80–P83. It supports external triggering via ADTRG (P05) and uses dedicated analog power rails (AVDD/AVSS) and reference voltage (AVREF) to ensure accuracy. This ADC capability is essential for UPD70F3033BGC-8EU-A applications such as thermal monitoring, audio level sensing, and power supply voltage supervision in AV systems.

Can the UPD70F3033BGC-8EU-A replace mask ROM-based variants like UPD703033AGC-8EU in existing designs?

Yes, the UPD70F3033BGC-8EU-A is pin-compatible and functionally equivalent to UPD703033AGC-8EU for most use cases, differing only in memory type (256 KB flash vs. 256 KB mask ROM) and the presence of VPP. Renesas explicitly states flash versions "can be replaced with" mask ROM versions in mass production. However, designers must validate noise immunity and timing margins, as flash and mask ROM variants exhibit measurable differences in EMI behavior per Renesas Application Note U14734EJ3V0DS.