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eZ80F91AZ050SG - 50MHz 8-bit 256KB Flash MCU | Zilog
eZ80F91AZ050SG

eZ80F91AZ050SG - 50MHz 8-bit 256KB Flash MCU | Zilog

The Zilog eZ80F91AZ050SG is an 8-bit microcontroller in the eZ80 Acclaim! family, delivering 50 MHz CPU performance with 256 KB of on-chip Flash and 16 KB SRAM in a 144-pin LQFP (20x20 mm) package. According to DigiKey listing 928880, the part integrates an EMAC (Ethernet Media Access Controller) for embedded networking and supports both Z80-compatible (64 KB) and full 24-bit (16 MB) addressing modes. An 8-bit microcontroller (MCU) is a single-chip processor whose internal data path is 8 bits wide, optimized for control-oriented tasks that demand deterministic behaviour, low cost, and minimal power. The eZ80 architecture extends the classic Z80 instruction set with a 24-bit linear address space, making it a bridge between legacy 8-bit code and 32-bit addressing. Within the IC taxonomy it sits at: microcontroller -> embedded processor -> integrated circuit. It belongs to the broader class of flash microcontrollers and is commonly deployed in industrial control and embedded communication designs. Key features include 32 general-purpose I/O pins, four 16-bit timers, a 10/100 Ethernet MAC with MII interface, two UARTs, I2C, SPI, IrDA encoder/decoder, and a JTAG debug port. The on-chip peripherals are designed for embedded internet connectivity, while the SRAM-backed Flash supports in-application programming for field upgrades. The eZ80F91AZ050SG uses a single-cycle pipelined core running at 50 MHz, providing sustained throughput equivalent to 80 MIPS peak (Z80 instructions). The integrated EMAC implements full IEEE 802.3 MAC and PHY interfacing, eliminating the need for an external Ethernet controller in point-of-sale and embedded gateway designs. Typical applications include industrial control, point-of-sale (POS) terminals, embedded communication gateways, security systems, and building automation. The wide address space makes the device attractive for legacy Z80 software migration and new 24-bit flat-memory designs. Design considerations include ensuring proper decoupling on the analog supply pins, following the recommended 50 MHz crystal layout, and reviewing Zilog application note PS0192 for EMAC magnetics and PHY interface. The device operates from a 3.3 V supply. This page consolidates verified distributor pricing, drop-in Zilog alternatives, and application guidance not collated in the standalone datasheet, providing an integrated reference for embedded engineers.

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i7-1370PRE - 14C/20T Embedded Raptor Lake, 24MB Cache | Intel
i7-1370PRE

i7-1370PRE - 14C/20T Embedded Raptor Lake, 24MB Cache | Intel

The Intel Core i7-1370PRE is a 13th Generation Raptor Lake mobile/embedded processor featuring 14 cores (6 Performance + 8 Efficient), 20 threads, 24 MB Intel Smart Cache, and a maximum turbo frequency of 4.80 GHz, designed in the FC-BGA16F package. Built on Intel 7 process technology, it supports up to 96 GB DDR5/DDR4 memory and integrates Intel Iris Xe graphics (96 EU). The processor operates with a 28 W processor base power and targets embedded and industrial applications requiring long-life availability. An embedded processor is a CPU designed for use in industrial, in-vehicle, or IoT systems where long-term availability (typically 10+ years), extended temperature tolerance, and platform stability are critical. Embedded CPUs sit within the broader taxonomy: processor -> central processing unit (CPU) -> mobile/embedded CPU -> Raptor Lake family -> Intel Core i-series. The 'PRE' suffix in Intel's mobile roadmap specifically denotes an embedded SKU qualified for long-life cycles, distinct from mainstream consumer 'P' parts. Key specifications include 6 P-cores with hyper-threading up to 5.0 GHz peak and 8 E-cores up to 3.7 GHz, 24 MB L3 cache, 96 EU Iris Xe graphics at 1.50 GHz, and 28 W processor base power configurable down to 20 W. The FC-BGA16F socket (1744-ball FCBGA) provides platform integration. Memory support includes DDR5-5200, DDR4-3200, LPDDR5-6400, and LPDDR4x-4267 with ECC capability. Architecturally, the i7-1370PRE uses Intel's hybrid P-core/E-core design, where Performance cores handle single-threaded latency-critical work and Efficient cores process throughput-oriented background tasks via Intel Thread Director scheduling. The 10 nm Intel 7 process allows higher core counts within embedded thermal envelopes, and the integrated Iris Xe GPU enables display and light GPGPU workloads without a discrete GPU. Typical applications include industrial edge computing, in-vehicle infotainment, factory automation HMIs, medical imaging systems, and digital signage. The 'E' (embedded) qualification extends operating temperature support and supply longevity compared to standard 'P' siblings. When designing with this CPU, select motherboards and chipsets engineered for the FC-BGA16F socket rather than consumer LGA sockets, validate thermal design at the configured cTDP, and confirm chipset firmware supports the specific embedded SKU. ECC memory and Intel vPro features require compatible PCH selection. This page synthesizes distributor pricing, Intel ARK specifications, cross-reference alternatives, and PCB/socket design notes to support embedded system engineers selecting between long-life Intel SKUs and cross-generational replacements.

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