ADDRMSKx Address Table C-6 Reset State

		REGISTERS
		ADDRMSKx

ADDRMSKx	Address:	Table C-6
x = 0–5	Reset State:

The address mask (ADDRMSKx) register, together with the address compare register, defines the address range that is assigned to the chip-select x output, CSx#. The address mask register determines the size of the address range, which must be 2n bytes, where n = 8, 9, . . , 20. For a 2n- byte address range, calculate n1 = 20 – n, and set the n1 most-significant bits of MASK19:8 in the address mask register.

—	—	—	—

MASK15 MASK14 MASK13 MASK12

MASK19 MASK18 MASK17 MASK16

MASK11	MASK10	MASK9	MASK8

Bit	Bit	Function
Number	Mnemonic	Function
Number	Mnemonic

15:12	—	Reserved; for compatibility with future devices, write zeros to these bits.

11:0	MASK19:8	Address Mask Bits
		For a 2n-byte address range, set the n most-significant bits of
		1
		MASK19:8, where n1 = 20 – n.

Table C-6. ADDRMSKx Addresses and Reset Values

Register	Address	Reset Value

ADDRMSK0	1F42H	XFFFH

ADDRMSK1	1F4AH	XFFFH

ADDRMSK2	1F52H	XFFFH

ADDRMSK3	1F5AH	XFFFH

ADDRMSK4	1F62H	XFFFH

ADDRMSK5	1F6AH	XFFFH

C-9

Microcontroller, 80C196NU, 8XC196NP specifications

The Intel 8XC196NP and 80C196NU microcontrollers are part of Intel's renowned 16-bit microcontroller series that gained popularity in the 1980s and 1990s for embedded systems applications. Designed for a variety of applications, these microcontrollers are characterized by their robust performance, versatility, and industry-standard architecture.

The 8XC196NP features an enhanced instruction set with over 100 instructions, allowing for efficient code execution. It operates at clock speeds up to 16 MHz, which contributes to improved performance in time-sensitive applications. The microcontroller is equipped with a 16-bit data bus, enabling more efficient data handling compared to its 8-bit predecessors, thus accommodating complex algorithms and large data sets.

In terms of memory architecture, the 8XC196NP supports an addressable memory space of up to 64 KB of program memory and 64 KB of data memory. This configuration provides sufficient space for large applications while ensuring fast data access. The microcontroller includes integrated features such as timers, serial I/O capabilities, and interrupt processing, which enhance its functionality for real-time applications and control mechanisms.

The 80C196NU, on the other hand, is designed for lower power operation, making it suitable for battery-powered devices. This microcontroller maintains similar features to the 8XC196NP while offering advancements that support low-power consumption. The 80C196NU can also function in a range of temperature environments, making it adaptable for industrial applications.

Both the 8XC196NP and 80C196NU support external memory interfacing, allowing designers to expand the system's capability by connecting additional ROM and RAM. This flexibility makes them appealing for developing complex systems, such as motor controls, industrial automation, and consumer electronics.

Another standout feature of these microcontrollers is their built-in debugging capabilities. Intel provided hardware and software tools that enabled developers to test and troubleshoot their applications effectively, reducing the development time and increasing reliability.

Overall, the Intel 8XC196NP and 80C196NU microcontrollers stand out for their dependability, versatility, and performance, contributing significantly to the evolution of embedded system design. Their legacy continues to influence modern microcontroller technology, ensuring their relevance in a wide array of applications today.

Intel 8XC196NP, 80C196NU, Microcontroller manual Table C-6. ADDRMSKx Addresses and Reset Values

Models: Microcontroller 80C196NU 8XC196NP

ADDRMSKx

ADDRMSKx

Address:

Table C-6

Reset State:

Bit

Table C-6. ADDRMSKx Addresses and Reset Values

Register

Microcontroller, 80C196NU, 8XC196NP specifications