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HC89S703 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

HC89S703 product

HC89S703

Microcontrollers

1T 805116 KB Flash12-bit ADCTSSOP-20PWMUARTSPII2C

HC89S703 is a 20-pin enhanced 1T 8051 MCU with 16 KB Flash, 12-bit ADC capability, timers, PWM, UART, SPI, and I2C for compact embedded-control designs.

Best for

  • Compact 8051 embedded controllers
  • Mixed analog and PWM control
  • Low-pin-count serial-interface designs

Avoid if

  • A guaranteed lifecycle or compliance status is required without additional supplier evidence
  • The design needs more than 18 GPIO pins
  • A higher-performance MCU architecture is required

Check before use

  • Confirm the exact TSSOP-20 ordering variant
  • Configure peripheral pin mapping before enabling peripheral functions
  • Confirm ADC reference-voltage and clock requirements
  • Validate reset and programming-pin use in the hardware design

Key specifications

Core
Enhanced 1T 8051, 8-bit
Program memory
16 KB Flash
Supply voltage
2.4 V to 5.5 V
ADC
16 external + 2 internal channels, 12-bit
Package
TSSOP-20, 20 pins

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Embedded controlPWM controlSensor acquisitionSerial peripherals

Datasheet

0c8d7f5c954238f7703601365fd0b95a_HC89S703.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for HC89S703: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

HC89S703 is a HOLYCHIP enhanced 8-bit 1T 8051 microcontroller. The documented TSSOP-20 version has 16 KB Flash, 256 B IRAM, 768 B XRAM, up to 18 GPIO pins, and integrated analog and communication peripherals.