DS80C320 datasheet(2/40 Pages) MAXIM

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DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers

2 of 40

DETAILED DESCRIPTION

The DS80C320/DS80C323 are fast 80C31/80C32-compatible microcontrollers. Wasted clock and

memory cycles have been removed using a redesigned processor core. As a result, every 8051 instruction

is executed between 1.5 and 3 times faster than the original for the same crystal speed. Typical

applications see a speed improvement of 2.5 times using the same code and same crystal. The DS80C320

offers a maximum crystal rate of 33MHz, resulting in apparent execution speeds of 82.5MHz

(approximately 2.5X).

The DS80C320/DS80C323 are pin compatible with all three packages of the standard 80C32 and offer

the same timer/counters, serial port, and I/O ports. In short, the devices are extremely familiar to 8051

users, but provide the speed of a 16-bit processor.

The DS80C320 provides several extras in addition to greater speed. These include a second full hardware

serial port, seven additional interrupts, programmable watchdog timer, power-fail interrupt and reset. The

device also provides dual data pointers (DPTRs) to speed block data memory moves. It can also adjust the

speed of off-chip data memory access to between two and nine machine cycles for flexibility in selecting

memory and peripherals.

The DS80C320 operating voltage ranges from 4.25V to 5.5V, making it ideal as a high-performance

upgrade to existing 5V systems. For applications in which power consumption is critical, the DS80C323

offers the same feature set as the DS80C320, but with 2.7V to 5.5V operation.

Designers must have two documents to fully use all the features of this device: this data sheet and the

High-Speed

Microcontroller

User’s

Guide,

available

our

website

www.maxim-ic.com/microcontrollers. Data sheets contain pin descriptions, feature overviews, and

electrical specifications, whereas our user’s guides contain detailed information about device features and

operation.

ORDERING INFORMATION

PART

Pb-FREE/RoHS-

COMPLIANT

TEMP RANGE

MAX CLOCK

SPEED (MHz)

PIN-PACKAGE

DS80C320-MCG

DS80C320-MCG+

0°C to +70°C

40 Plastic DIP

DS80C320-QCG

DS80C320-QCG+

0°C to +70°C

44 PLCC

DS80C320-ECG

DS80C320-ECG+

0°C to +70°C

44 TQFP

DS80C320-MNG

DS80C320-MNG+

-40°C to +85°C

40 Plastic DIP

DS80C320-QNG

DS80C320-QNG+

-40°C to +85°C

44 PLCC

DS80C320-ENG

DS80C320-ENG+

-40°C to +85°C

44 TQFP

DS80C320-MCL

DS80C320-MCL+

0°C to +70°C

40 Plastic DIP

DS80C320-QCL

DS80C320-QCL+

0°C to +70°C

44 PLCC

DS80C320-ECL

DS80C320-ECL+

0°C to +70°C

44 TQFP

DS80C320-MNL

DS80C320-MNL+

-40°C to +85°C

40 Plastic DIP

DS80C320-QNL

DS80C320-QNL+

-40°C to +85°C

44 PLCC

DS80C320-ENL

DS80C320-ENL+

-40°C to +85°C

44 TQFP

DS80C323-MCD

DS80C323-MCD+

0°C to +70°C

40 Plastic DIP

DS80C323-QCD

DS80C323-QCD+

0°C to +70°C

44 PLCC

DS80C323-ECD

DS80C323-ECD+

0°C to +70°C

44 TQFP

DS80C323-QND

DS80C323-QND+

-40°C to +85°C

44 PLCC

DS80C323-END

DS80C323-END+

-40°C to +85°C

44 TQFP

+ Denotes a Pb-free/RoHS-compliant device.

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