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Intel Microcontroller WK1 EPORT.30, ALE WK0, BHE# WK1, Inst WK0, NMI WK0 Once MD0 PLLEN1, RD# WK1

Models: Microcontroller 80C196NU 8XC196NP

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8XC196NP, 80C196NU USER’S MANUAL

Table B-5. 8XC196NP and 80C196NU Pin Status (Continued)

 

 

 

Upon

 

Power-

 

 

 

Multiplexed

During

 

down

 

 

 

RESET#

 

(NP/NU)

 

Bus

Port Pins

RESET#

Idle

Hold

With

Inactive

and

Idle

 

Active

 

 

 

 

(Note 11)

 

Standby

 

 

 

 

 

 

 

 

 

 

 

 

 

(NU only)

 

 

 

 

 

 

 

 

 

 

P4.3

—

WK1

WK1

(Note 1)

(Note 1)

(Note 1)

—

EPORT.3:0

A19:16

WK1

1

(Note 5)

(Note 5)

(Note 6)

(Note 8)

—

A15:0

WK1

LoZ0

(Note 7)

(Note 7)

HiZ

LoZ0

—

AD15:0

WK1

LoZ0

(Note 7)

(Note 7)

HiZ

LoZ0

—

ALE

WK0

0

(Note 9)

(Note 9)

WK0

LoZ0

—

BHE#

WK1

1

(Note 10)

(Note 10)

WK1

LoZ1

—

EA#

HiZ

HiZ

HiZ

HiZ

HiZ

—

 

(NP only)

 

 

 

 

 

 

—

INST

WK0

0

(Note 9)

(Note 9)

WK0

LoZ0

—

NMI

WK0

WK0

WK0

WK0

WK0

—

—

ONCE

MD0

MD0

MD0

MD0

MD0

—

—

PLLEN1

HiZ

HiZ

HiZ

HiZ

HiZ

—

 

(NU only)

 

 

 

 

 

 

—

PLLEN2

MD0

MD0

MD0

MD0

MD0

—

 

(NU only)

 

 

 

 

 

 

—

RD#

WK1

1

(Note 10)

(Note 10)

WK1

LoZ1

—

READY

WK1

WK1

WK1

WK1

WK1

—

—

RESET#

0

WK1

WK1

WK1

WK1

—

—

RPD

LoZ1

LoZ1

LoZ1

LoZ1

LoZ1

—

—

WR#

WK1

1

(Note 10)

(Note 10)

WK1

LoZ1

XTAL1

—

Osc input,

Osc input,

Osc input,

Osc input,

Osc

—

 

 

input,

 

 

 

HiZ

HiZ

HiZ

HiZ

 

 

 

HiZ

 

 

 

 

 

 

 

 

XTAL2

—

Osc output,

Osc output,

Osc

HiZ

Osc

—

 

 

LoZ0/1

LoZ0/1

output,

 

output,

 

 

 

 

 

LoZ0/1

 

LoZ0/1

 

NOTE:

1.If Px_MODE.y = 0, then port is as programmed. If Px_MODE.y = 1, then as specified by the associ- ated peripheral.

2.If P2_MODE.7 = 0, then port is as programmed. If P2_MODE.7 = 1, then 1.

3.Used as chip select: If HLDA# = 0, then WK1. If HLDA# = 1, then LoZ1. Used as port: then port is as programmed.

4.Used as chip select: WK1. Used as port: then port is as programmed.

5.When used as extended address: If HLDA# = 1, then 0. If HLDA# = 0, then HiZ When used as EPORT, then port value.

6.When used as extended address, then HiZ. When used as EPORT, then port value.

7.If HLDA# = 1, then LoZ0. If HLDA# = 0, then HiZ.

8.When used as extended address: then previous address. When used as EPORT: then port value.

9.If HLDA# = 1, then LoZ0. If HLDA# = 0, then WK0.

10.If HLDA# = 1, then LoZ1. If HLDA# = 0, then WK1.

11.The values in this column are valid until user code configures the specific signal (i.e., until Px_MODE is written).

B-14

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Image 389
Intel Microcontroller WK1 EPORT.30, ALE WK0, BHE# WK1, Inst WK0, NMI WK0 Once MD0 PLLEN1, PLLEN2 MD0, RD# WK1, WR# WK1
Page 388 Page 390

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.