Infineon Technologies MB91101APFV-G-BNDE1

Overview

MB91101APFV-G-BNDE1 from Infineon Technologies is a 32-bit ROMless microcontroller based on the FR-V architecture, featuring 16 KB RAM, 100-pin LQFP package, and support for external program memory via 16-bit data/24-bit address bus. It targets real-time control in industrial motor drives and embedded vision preprocessing systems.

For engineers reviewing the MB91101APFV-G-BNDE1 datasheet, MB91101APFV-G-BNDE1 pinout, MB91101APFV-G-BNDE1 application, or MB91101APFV-G-BNDE1 equivalent, key selection criteria include external memory interface timing, on-chip RAM size, clock domain configuration (PLL-supported up to 100 MHz), and peripheral set including dual UARTs, 32-bit timer, and DMA controller.

Technical Context

The MB91101APFV-G-BNDE1 implements Fujitsu's FR-V V2 core with dual-issue superscalar execution and integrated DSP extensions for parallel arithmetic operations. It supports external boot from SRAM, Flash, or EPROM via configurable wait-state logic and programmable bus timing registers.

Its memory subsystem includes 16 KB on-chip SRAM mapped to internal address space, no on-chip ROM, and dedicated bus arbitration for simultaneous access by CPU and DMA. Peripheral clocking is derived from PLL output with independent prescalers for UART, timer, and DMA modules.

Key Specifications

Pinout & Package

MB91101APFV-G-BNDE1 is housed in a 100-pin LQFP package with exposed thermal pad (EP). Pin functions are organized into dedicated groups: power (VDD/VSS), clock (XIN/XOUT), external memory interface (AD0–AD15, A0–A23, RD#, WR#, CS#), and peripheral I/O (UART0/1 TX/RX, TIN/TOUT, DREQ/DACK).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB91102APFV-G-BNDE1, this part trades RAM capacity for cost and board space; compared with MB91103APFV-G-BNDE1, it retains full external memory flexibility at the expense of boot autonomy.

Availability

MB91101APFV-G-BNDE1 is available at Aetrix Electronics and suitable for industrial motor control, embedded vision preprocessing, and programmable logic controller I/O modules requiring stable component supply across multi-year production cycles.

Supply support for MB91101APFV-G-BNDE1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial microcontrollers with global manufacturing and R&D infrastructure.

The MB91100 series was designed for deterministic real-time processing in resource-constrained industrial edge nodes, emphasizing external memory scalability and low-latency peripheral response over integrated flash.

FAQ

Does MB91101APFV-G-BNDE1 include on-chip flash or ROM?

No. The MB91101APFV-G-BNDE1 is ROMless and requires external non-volatile memory (e.g., Flash or EPROM) for program storage. It boots exclusively from external memory mapped at address 0x00000000, with no internal code storage capability. Boot mode is fixed and not configurable via pins or registers.

What is the maximum supported external memory size?

The device supports up to 16 MB of external memory space using its 24-bit address bus (A0–A23). Address decoding is performed externally; the chip asserts CS# only when address matches programmed chip-select range registers, allowing multiple memory or peripheral devices on the same bus.

Can the on-chip 16 KB RAM be used as stack and heap simultaneously?

Yes. The 16 KB SRAM is contiguous and fully accessible as general-purpose memory. Developers allocate stack (typically 1–2 KB) and heap (remaining space) via linker script configuration. No hardware partitioning or access restrictions apply - all CPU and DMA masters share the same SRAM space with arbitration.

Is the PLL capable of generating clocks for both CPU and peripherals independently?

No. The on-chip PLL generates a single system clock (CLKSYS), which feeds both CPU and peripheral modules. Peripheral clocks are derived by dividing CLKSYS using dedicated prescalers (e.g., UART divider, timer divider), but all originate from the same PLL output - no independent PLL outputs or fractional dividers are provided.