Renesas R7S910022CBG#AC0

Overview

R7S910022CBG#AC0 from Renesas Electronics is a high-performance 32-bit Arm Cortex-R4 real-time microcontroller operating at up to 450 MHz (747 DMIPS), featuring on-chip FPU, dual 12-bit A/D converters (8+8 channels), 112-pin FBGA package (PLBG0112KA-A), and MDIO master interface for optical transceiver control in industrial Ethernet applications.

For engineers reviewing the R7S910022CBG#AC0 datasheet, R7S910022CBG#AC0 pinout, R7S910022CBG#AC0 application, or R7S910022CBG#AC0 equivalent, key selection criteria include its 450 MHz Cortex-R4 core with TCM/ECC memory, MDIO master support (up to 10 MHz), dual A/D conversion with self-diagnosis, and -40°C to +110°C junction temperature rating for motion control and servo drive systems.

Technical Context

The R7S910022CBG#AC0 implements an Arm v7-R architecture Cortex-R4 core (r1p4 revision) with Harvard 8-stage pipeline, instruction/data caches (8 KB each with ECC), and tightly coupled memory (ATCM 512 KB, BTCM 32 KB, both with ECC). It supports single- and double-precision floating-point operations and includes a memory protection unit (MPU).

Its real-time subsystem integrates event link controller (ELC) for CPU-sleep-mode module chaining, two 16-channel DMAC units, six TPUa timer channels with PWM/encoder support, and safety features including CRC calculator, clock monitor (CLMA), error control module (ECM), and independent watchdog (IWDTa) driven by 240 kHz LOCO/2.

Key Specifications

Pinout & Package

Package: 112-pin Fine-Pitch Ball Grid Array (FBGA), PLBG0112KA-A, 6 mm × 6 mm, 0.5 mm pitch, with thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7S910022CBG#AC0, R7S910021CBG#AC0 trades MDIO master for extended SRAM, while R7S910023CBG#AC0 retains MDIO master and adds SRAM - making R7S910022CBG#AC0 the optimal balance for MDIO-dependent, memory-constrained real-time control.

Availability

R7S910022CBG#AC0 is available at Aetrix Electronics and suitable for industrial servo drives, real-time Ethernet nodes, factory automation PLCs, and high-integrity motor control systems requiring stable component supply across extended product lifecycles.

Supply support for R7S910022CBG#AC0 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, and power management solutions for automotive, industrial, and IoT markets.

The RZ/T1-M Group targets hard real-time industrial automation, combining Arm Cortex-R4 performance with safety, security, and deterministic peripheral subsystems for motion control and networked drives.

FAQ

What is the maximum CPU clock frequency supported by the R7S910022CBG#AC0?

The R7S910022CBG#AC0 supports a maximum CPU clock frequency of 450 MHz, delivering 747 DMIPS performance. This frequency is achieved using the on-chip PLL with external 25 MHz crystal input (XTAL/EXTAL), and is validated across the full -40°C to +110°C junction temperature range. The R7S910022CBG#AC0 maintains this speed without derating under thermal stress typical in enclosed industrial enclosures.

Does the R7S910022CBG#AC0 include on-chip extended SRAM?

No, the R7S910022CBG#AC0 does not include on-chip extended SRAM. Per Table 1.3 in the datasheet, it belongs to the "Not supported" SRAM category. It does provide 512 KB ATCM and 32 KB BTCM (both with ECC), but lacks the optional 1 Mbyte extended SRAM found in variants like R7S910021CBG#AC0 and R7S910023CBG#AC0. The R7S910022CBG#AC0 relies on external memory for large buffers.

What MDIO functionality is implemented in the R7S910022CBG#AC0?

The R7S910022CBG#AC0 implements MDIO master mode only (up to 10 MHz), with no MDIO slave capability. Pins MMDC1 (output) and MMDIO1 (bidirectional) are dedicated to master operation, while MDC/MDIO pins remain unconnected in this variant. This enables direct register access to CFP-compliant optical transceivers but excludes use as an MDIO slave device. The R7S910022CBG#AC0 is specifically optimized for transceiver host control.

How many A/D converter channels does the R7S910022CBG#AC0 support, and what is their resolution?

The R7S910022CBG#AC0 integrates two independent 12-bit A/D converter units: S12ADCa unit 0 (8 channels: AN000–AN007) and unit 1 (8 channels: AN100–AN107), totaling 16 analog inputs. Unit 0 achieves 0.483 µs conversion time at VREFH = 3.0–3.6 V. Both units support self-diagnosis, analog input disconnection detection, and trigger sources including TPUa timers and external signals - critical for motor current sensing in the R7S910022CBG#AC0.

What safety features are integrated into the R7S910022CBG#AC0 for industrial real-time applications?

The R7S910022CBG#AC0 includes register write protection, input clock oscillation stop detection, CRC calculator (with four polynomials), independent watchdog timer (IWDTa), and error control module (ECM) with dual-checker architecture. These features collectively support IEC 61508 SIL2 compliance by detecting memory corruption, clock faults, and software runaway - ensuring safe shutdown in motion control systems. The R7S910022CBG#AC0's ECM can generate pin signals, interrupts, or internal resets upon error detection.