The Z380 and Z382 are

Zilog Zilog, Inc. is an American manufacturer of microprocessors and 8-bit and 16-bit microcontrollers. It is also a supplier of application-specific embedded system-on-chip (SoC) products. Its most famous product is the Z80 series of 8-bit microp ...

16-bit 16-bit microcomputers are microcomputers that use 16-bit microprocessors. A 16-bit register can store 216 different values. The range of integer values that can be stored in 16 bits depends on the integer representation used. With the two mos ...

32-bit In computer architecture, 32-bit computing refers to computer systems with a processor, memory, and other major system components that operate on data in 32- bit units. Compared to smaller bit widths, 32-bit computers can perform large calcula ...

processor from 1994.https://www.zilog.com/docs/datacomm/pb0075.pdf It is Z80 compatible, but it was released much later than its competitors (the Intel

386 __NOTOC__ Year 386 ( CCCLXXXVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Honorius and Euodius (or, less frequently, year 113 ...

and

Motorola 68020 The Motorola 68020 ("''sixty-eight-oh-twenty''", "''sixty-eight-oh-two-oh''" or "''six-eight-oh-two-oh''") is a 32-bit microprocessor from Motorola, released in 1984. A lower-cost version was also made available, known as the 68EC020. In keepin ...

) and as a result was never able to gain any significant market leverage. On the other hand, the newer and faster eZ80 family was more successful. The chip supports

processing with a clock speed of up to 20 MHz. The Z380 is incompatible with Zilog's older Z800 and Z280. As the Z380 is derived from the newer Z180 it is a less mini computer like design than these older processors, with fewer features. Instead, it has a wider ALU and register length of 32-bits. It can therefore address 4 GB directly: * Similar pipelined execution or fetch/execute overlap as the Z280 page 45 * Simpler MMU, without

memory protection Memory protection is a way to control memory access rights on a computer, and is a part of most modern instruction set architectures and operating systems. The main purpose of memory protection is to prevent a process from accessing memory that h ...

. * Minimum of 2 clocks/ instruction. This is like the Z280, but also for 32-bit operations. * No on-chip cache, as it is redundant with the faster static RAMs of the 1990s and onwards. * Lacks the I/O trap feature The Z382 is marked as a Data Communications Controller and in addition to the Z380 has addition I/O features. * 16550 Mimic with I/O Mailbox, DMA Mailbox, and 16 mABus Drive * 3 HDLC Synchronous Serial Channels–Serial Data Rate of up to 10 Mbps * GCI/SCIT Bus Interface * 8 Advanced DMA Channels with 24-Bit Addressing * Plug-and-Play ISA Interface * PCMCIA Interface * 2 Enhanced ASCIs (UARTs) with 16-Bit Baud RateGenerators (BRG) * Clocked Serial I/O Channel (CSIO) for Use with SerialMemory * Two 16-Bit Timers with Flexible Prescalers * Three Memory Chip Selects with Wait-State Generators * Watch-Dog Timer (WDT) * Up to 32 General-Purpose I/O Pins n * DC to 20 MHz Operating Frequency @ 5.0V n * DC to 10 MHz Operating Frequency @ 3.3Vn * 144-Pin QFP and VQFP Style Packages

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;Notes ;Bibliography *

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Further reading