Renesas R5F11Z7ADNA#20

Overview

R5F11Z7ADNA#20 from Renesas is a 24-pin RL78/G1P 16-bit microcontroller designed for industrial sensor control and low-power embedded systems, featuring 16 KB flash ROM, 1.5 KB RAM, 2 KB data flash, 6-channel 12-bit A/D converter, and 2-channel 10-bit D/A converter operating at 2.7–3.6 V.

For engineers reviewing the R5F11Z7ADNA#20 datasheet, R5F11Z7ADNA#20 pinout, R5F11Z7ADNA#20 application, or R5F11Z7ADNA#20 equivalent, key selection considerations include its HWQFN-24 (4 × 4 mm) industrial-grade package, -40°C to +85°C temperature rating, true low-power operation (0.31 μA LVD, 66 μA/MHz active), and integrated analog peripherals for compact sensor node designs.

Technical Context

The R5F11Z7ADNA#20 implements the RL78 CPU core with four 16-bit timer channels (TAU), one watchdog timer, and an event link controller (ELC) enabling hardware-triggered peripheral coordination without CPU intervention. It supports dual clock domains: high-speed on-chip oscillator (selectable 1–32 MHz) and low-speed 15 kHz internal oscillator.

Its analog subsystem includes a 6-channel 12-bit A/D converter with AVREFP/AVREFM inputs, two 10-bit D/A outputs (ANO0/ANO1), and on-chip voltage detector (LVD) with four programmable thresholds. Serial interfaces comprise one UART, one CSI, one I²C (dual slave address), and SSI support - all mapped to dedicated 24-pin HWQFN I/O.

Key Specifications

Pinout & Package

Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch) with exposed die pad (to be connected to VSS). Pin count: 24. Industrial temperature grade (suffix 'D').

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11Z7AANA#20, the R5F11Z7ADNA#20 provides guaranteed industrial temperature operation and identical low-power analog performance; versus R5F11ZBAAFP#10, it offers pin-compatible hardware reuse in space-constrained designs but trades off two A/D channels for smaller form factor.

Availability

R5F11Z7ADNA#20 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable gas detectors, smart HVAC actuators, and motor health monitors requiring stable component supply across extended product lifecycles.

Supply support for R5F11Z7ADNA#20 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 global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G1P product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial sensor control, where integrated analog peripherals, compact packaging, and robust operation across -40°C to +85°C are essential.

FAQ

What is the maximum operating frequency of the R5F11Z7ADNA#20?

The R5F11Z7ADNA#20 supports a maximum CPU operating frequency of 32 MHz using its high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.03125 μs. External crystal or clock input (X1/EXCLK) supports up to 20 MHz. The R5F11Z7ADNA#20 maintains full functionality across its specified 2.7–3.6 V supply range at these speeds.

Does the R5F11Z7ADNA#20 support self-programming of its flash memory?

Yes, the R5F11Z7ADNA#20 supports self-programming of both code flash and data flash memory using on-chip firmware libraries (FSL Type01). It reserves 896 bytes of RAM (FF900H–FFC7FH) for this purpose. The R5F11Z7ADNA#20 requires no external programming hardware for field updates, though flash write/erase operations must be performed under controlled voltage and temperature conditions.

How many analog input channels does the R5F11Z7ADNA#20 provide?

The R5F11Z7ADNA#20 provides six analog input channels (ANI0–ANI3, ANI7, ANI16) compatible with its 12-bit A/D converter. These are distributed across P20–P23, P27, and P10 pins. The R5F11Z7ADNA#20 also supports differential measurement using AVREFP and AVREFM pins, enabling ratiometric accuracy critical for industrial sensor signal chains.

What communication interfaces are integrated into the R5F11Z7ADNA#20?

The R5F11Z7ADNA#20 integrates UART0 (P30/P31), CSI00 (P30–P32), I²C bus interface (P60/P61 with dual slave addressing), and SSI00 (P33). All interfaces operate concurrently and can be routed to designated pins without resource conflict. The R5F11Z7ADNA#20 does not include CAN or USB peripherals - its communication stack targets sensor-to-gateway bridging at moderate data rates.

Is the exposed die pad on the R5F11Z7ADNA#20 package required to be connected?

Yes, the exposed die pad on the R5F11Z7ADNA#20's HWQFN-24 package must be electrically and thermally connected to VSS (ground) for proper operation. Renesas explicitly recommends this connection in the datasheet to ensure voltage regulator stability and thermal dissipation. Failure to connect the die pad may cause erratic behavior, especially during high-current analog operation or extended low-power modes. The R5F11Z7ADNA#20's REGC pin also requires a 0.47–1 μF capacitor to VSS.