Freescale 68HC16
Encyclopedia
The 68HC16 is a highly modular microcontroller
family based on the CPU16 16-bit core made by Freescale Semiconductor
(formerly known as Motorola Semiconductor
). The CPU16 core is a true 16-bit design, with an architecture that is very familiar to 68HC11
(HC11) users. The resemblances to the HC11 core design are a deliberate move to provide
an upgrade path for those 8-bit
68HC11
designs that require the increased power of a 16-bit
CPU. Many features of the HC16 and the
CPU16 core are new to HC11 users.
The HC16 provides a software upgrade path for HC11 users while giving full hardware
compatibility with the asynchronous address
and data bus found on the 32-bit
microprocessors.
Microcontroller
A microcontroller is a small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals. Program memory in the form of NOR flash or OTP ROM is also often included on chip, as well as a typically small amount of RAM...
family based on the CPU16 16-bit core made by Freescale Semiconductor
Freescale Semiconductor
Freescale Semiconductor, Inc. is a producer and designer of embedded hardware, with 17 billion semiconductor chips in use around the world. The company focuses on the automotive, consumer, industrial and networking markets with its product portfolio including microprocessors, microcontrollers,...
(formerly known as Motorola Semiconductor
Motorola
Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois, which was eventually divided into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011, after losing $4.3 billion from 2007 to 2009...
). The CPU16 core is a true 16-bit design, with an architecture that is very familiar to 68HC11
Freescale 68HC11
The 68HC11 is an 8-bit microcontroller family introduced by Motorola in 1985. Now produced by Freescale Semiconductor, it descended from the Motorola 6800 microprocessor. It is a CISC microcontroller...
(HC11) users. The resemblances to the HC11 core design are a deliberate move to provide
an upgrade path for those 8-bit
8-bit
The first widely adopted 8-bit microprocessor was the Intel 8080, being used in many hobbyist computers of the late 1970s and early 1980s, often running the CP/M operating system. The Zilog Z80 and the Motorola 6800 were also used in similar computers...
68HC11
Freescale 68HC11
The 68HC11 is an 8-bit microcontroller family introduced by Motorola in 1985. Now produced by Freescale Semiconductor, it descended from the Motorola 6800 microprocessor. It is a CISC microcontroller...
designs that require the increased power of a 16-bit
16-bit
-16-bit architecture:The HP BPC, introduced in 1975, was the world's first 16-bit microprocessor. Prominent 16-bit processors include the PDP-11, Intel 8086, Intel 80286 and the WDC 65C816. The Intel 8088 was program-compatible with the Intel 8086, and was 16-bit in that its registers were 16...
CPU. Many features of the HC16 and the
CPU16 core are new to HC11 users.
The HC16 provides a software upgrade path for HC11 users while giving full hardware
Hardware
Hardware is a general term for equipment such as keys, locks, hinges, latches, handles, wire, chains, plumbing supplies, tools, utensils, cutlery and machine parts. Household hardware is typically sold in hardware stores....
compatibility with the asynchronous address
Memory address
A digital computer's memory, more specifically main memory, consists of many memory locations, each having a memory address, a number, analogous to a street address, at which computer programs store and retrieve, machine code or data. Most application programs do not directly read and write to...
and data bus found on the 32-bit
32-bit
The range of integer values that can be stored in 32 bits is 0 through 4,294,967,295. Hence, a processor with 32-bit memory addresses can directly access 4 GB of byte-addressable memory....
microprocessors.