DS89C420-QNS datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > The embedded processor and controller> Microcontrollers and processors> DS89C420-QNS

DS89C420-QNS: DescriptionMicrocontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PQCC44, PLASTIC, LCC-44; CategoryThe embedded processor and controller Microcontrollers and processors; File Size418KB，58 Pages; ManufacturerDALLAS; Websitehttp://www.dalsemi.com

Download Datasheet Parametric Compare View All

DS89C420-QNS Overview

Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PQCC44, PLASTIC, LCC-44

DS89C420-QNS Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	DALLAS
package instruction	PLASTIC, LCC-44
Reach Compliance Code	unknown
Has ADC	NO
Address bus width	16
bit size	8
CPU series	8051
maximum clock frequency	50 MHz
DAC channel	NO
DMA channel	NO
External data bus width	8
JESD-30 code	S-PQCC-J44
JESD-609 code	e0
Number of I/O lines	32
Number of terminals	44
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
PWM channel	NO
Package body material	PLASTIC/EPOXY
encapsulated code	QCCJ
Encapsulate equivalent code	LDCC44,.7SQ
Package shape	SQUARE
Package form	CHIP CARRIER
power supply	5 V
Certification status	Not Qualified
RAM (bytes)	1024
rom(word)	16384
ROM programmability	FLASH
speed	50 MHz
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	J BEND
Terminal pitch	1.27 mm
Terminal location	QUAD
uPs/uCs/peripheral integrated circuit type	MICROCONTROLLER
Base Number Matches	1

Preview

Download Datasheet

View All

PRELIMINARY

DS89C420

Ultra High Speed Microcontroller

www.dalsemi.com

FEATURES

80C52 compatible

−

8051 pin and instruction set compatible

−

Four bidirectional I/O ports

−

Three 16 bit timer counters

−

256 bytes scratchpad RAM

On-chip memory

−

16k Flash memory

−

In-Application programmable

−

In System programmable via serial port

−

1k SRAM for MOVX

ROMSIZE feature

−

Selects internal program memory size from 0

to16k

−

Allows access to entire external memory

map

−

Dynamically adjustable by software

High Speed Architecture

−

One clock per machine cycle

−

DC to 50 MHz operation

−

Single cycle instruction in 20 ns

−

Optional variable length MOVX to access

fast/slow peripherals

−

Dual data pointers with Auto

Increment/Decrement and Toggle Select

−

Supports four paged modes

Power Management Mode

−

Programmable clock divider

−

Automatic hardware and software exit

Two full duplex serial ports

Programmable Watchdog timer

Thirteen interrupt sources (six external)

Five levels of interrupt priority

Power Fail Reset

Early Warning Power Fail Interrupt

PIN ASSIGNMENT

P1.0/T2

P1.1/T2EX

P1.2/RXD1

P1.3/TXD1

P1.4/INT2

P1.5/INT3

P1.6/INT4

P1.7/INT5

RST

P3.0/RXD0

P3.1/TXD0

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

P3.6/WR

P3.7/RD

XTAL2

XTAL1

10 DALLAS 31

11 DS89C420 30

VCC

P0.0

P0.1

P0.2

P0.3

P0.4

P0.5

P0.6

P0.7

EA/V

ALE/PROG

PSEN

P2.7

P2.6

P2.5

P2.4

P2.3

P2.2

P2.1

P2.0

40-Pin DIP

DALLAS

DS89C420

44-Pin PLCC

DALLAS

DS89C420

44-Pin TQFP

1 of

092200

DS89C420

DESCRIPTION

The DS89C420 offers the highest performance available in 8051-compatible microcontrollers. It features a

redesigned processor core which executes every 8051 instruction up to 12 times faster than the original for

the same crystal speed, thus allowing very significant improvements using the same code and crystal. The

DS89C420 offers a maximum crystal speed of 50 MHz, achieving execution rates up to 50 MIPs for short

instructions.

The DS89C420 is pin-compatible with all three packages of the standard 8051 and includes standard

resources such as three timer/counters, serial port, and four 8-bit I/O ports. It features 16 kbits of “In System

Programmable” flash memory which can be programmed

in system

from an I/O port using a built in program

memory loader or from resident user software. It can also be loaded externally using standard commercially

available programmers.

Besides greater speed, the DS89C420 includes 1 kbits of data RAM, a second full hardware serial port, seven

additional interrupts, two more levels of interrupt priority, programmable Watchdog timer, Brown-out

Monitor, and Power-Fail Reset. The device also provides dual data pointers (DPTRs) to speed-up block data

memory moves and this feature is further enhanced with a new selectable Automatic Increment/Decrement

and Toggle Select operation . The speed of MOVX data memory access can be adjusted by adding stretch

values up to ten machine cycle times for flexibility in selecting external memory and peripherals.

A Power Management Mode (PMM) uses significantly lower power consumption by slowing the CPU

execution rate from 1 clock period per cycle to 1024 clock periods per cycle. A selectable switchback feature

can automatically cancel this mode to enable a normal speed response to interrupts.

The EMI reduction feature disables the ALE signal when the processor is not accessing external memory.

ORDERING INFORMATION:

PART NUMBER

DS89C420 - MCS

DS89C420 - QCS

DS89C420 - ECS

DS89C420 - MNS

DS89C420 - QNS

DS89C420 - ENS

PACKAGE

40-pin plastic DIP

44-pin PLCC

44-pin TQFP

40-pin plastic DIP

44-pin PLCC

44-pin TQFP

MAX.

CLOCK SPEED

50 MHz

TEMPERATURE

RANGE

C to+70

-40

C to +85

-40

C to +85

-40

C to +85

2 of

DS89C420-QNS Related Products

	DS89C420-QNS	DS89C420-ECS	DS89C420-MNS	DS89C420-QCS	DS89C420-ENS	DS89C420-MCS
Description	Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PQCC44, PLASTIC, LCC-44	Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PQFP44, TQFP-44	Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PDIP40, 0.600 INCH, PLASTIC, DIP-40	Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PQCC44, PLASTIC, LCC-44	Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PQFP44, TQFP-44	Microcontroller, 8-Bit, FLASH, 8051 CPU, 50MHz, CMOS, PDIP40, 0.600 INCH, PLASTIC, DIP-40
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible
Maker	DALLAS	DALLAS	DALLAS	DALLAS	DALLAS	DALLAS
package instruction	PLASTIC, LCC-44	TQFP-44	0.600 INCH, PLASTIC, DIP-40	PLASTIC, LCC-44	TQFP-44	0.600 INCH, PLASTIC, DIP-40
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown
Has ADC	NO	NO	NO	NO	NO	NO
Address bus width	16	16	16	16	16	16
bit size	8	8	8	8	8	8
CPU series	8051	8051	8051	8051	8051	8051
maximum clock frequency	50 MHz	50 MHz	50 MHz	50 MHz	50 MHz	50 MHz
DAC channel	NO	NO	NO	NO	NO	NO
DMA channel	NO	NO	NO	NO	NO	NO
External data bus width	8	8	8	8	8	8
JESD-30 code	S-PQCC-J44	S-PQFP-G44	R-PDIP-T40	S-PQCC-J44	S-PQFP-G44	R-PDIP-T40
JESD-609 code	e0	e0	e0	e0	e0	e0
Number of I/O lines	32	32	32	32	32	32
Number of terminals	44	44	40	44	44	40
Maximum operating temperature	85 °C	70 °C	85 °C	70 °C	85 °C	70 °C
PWM channel	NO	NO	NO	NO	NO	NO
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	QCCJ	QFP	DIP	QCCJ	QFP	DIP
Encapsulate equivalent code	LDCC44,.7SQ	TQFP44,.47SQ,32	DIP40,.6	LDCC44,.7SQ	TQFP44,.47SQ,32	DIP40,.6
Package shape	SQUARE	SQUARE	RECTANGULAR	SQUARE	SQUARE	RECTANGULAR
Package form	CHIP CARRIER	FLATPACK	IN-LINE	CHIP CARRIER	FLATPACK	IN-LINE
power supply	5 V	5 V	5 V	5 V	5 V	5 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
RAM (bytes)	1024	1024	1024	1024	1024	1024
rom(word)	16384	16384	16384	16384	16384	16384
ROM programmability	FLASH	FLASH	FLASH	FLASH	FLASH	FLASH
speed	50 MHz	50 MHz	50 MHz	50 MHz	50 MHz	50 MHz
Maximum supply voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Nominal supply voltage	5 V	5 V	5 V	5 V	5 V	5 V
surface mount	YES	YES	NO	YES	YES	NO
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	COMMERCIAL	INDUSTRIAL	COMMERCIAL	INDUSTRIAL	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	J BEND	GULL WING	THROUGH-HOLE	J BEND	GULL WING	THROUGH-HOLE
Terminal pitch	1.27 mm	0.8 mm	2.54 mm	1.27 mm	0.8 mm	2.54 mm
Terminal location	QUAD	QUAD	DUAL	QUAD	QUAD	DUAL
uPs/uCs/peripheral integrated circuit type	MICROCONTROLLER	MICROCONTROLLER	MICROCONTROLLER	MICROCONTROLLER	MICROCONTROLLER	MICROCONTROLLER

Recommended Resources

STK4142 II power amplifier circuit diagram

Use CD4011 to create sound, light and touch three-control delay lamps

Schematic diagram of digital regulated power supply and regulated current power supply

High input voltage integrated regulated power supply circuit composed of BG602 Part 2

Tube Stereo Power Amplifier

Computer motherboard circuit diagram 440BX_21

Thank you very much for your help. I finally made my first board. Share it with you: [b]A cool place is needed in the hot summer - Homemade water cooling system - Schematic diagram of control system[/b] The basic materials have been basically prepared, and the next step is to start th...; fpack PCB Design

About the selection of switching regulator!: Now I need to design a voltage regulator circuit. I have checked some information about switching regulators. The information shows that the input voltage range is 6-25V, the output is 1-15V, and the ...; yb222 Power technology

High price for experts to crack the computer board protocol based on 422 communication: The computer board of the existing Korean Doosan excavator is based on 422 communication. In order to do secondary development, you must know its communication protocol. Now we sincerely ask experts t...; halien Embedded System

Model EP4CE6F22C8N not found: Is this a typo? [url=https://bbs.eeworld.com.cn/thread-375440-1-1.html]https://bbs.eeworld.com.cn/thread-375440-1-1.html[/url] I guess it is EP4CE6E22C8. The board is said to have been shipped today. ...; cl17726 FPGA/CPLD

[Recruitment] ZTE (ZTE Corporation) South Research Institute Data Logic Design and Development Department recruits IC hardware/software engineers: ZTE (ZTE Corporation) South Research Institute Data Logic Design and Development Department recruits IC hardware/software engineers. Work location: Nanjing. Hardware category 1. Experience in designin...; sailor_w Recruitment

How to view Vxworks preemption timing in WorkBench?: How to view the preemption timing of Vxworks in WorkBench? Is there a preemption timing diagram in WindRiver WorkBench2.6, similar to Tornado? Thank you...; nishishab Real-time operating system RTOS

Shortcut: 00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

Popular Components