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AT89C52-20-PC — DIP-24/28/40 package (representative)
DIP-24/28/40
Representative of package type
Microchip Technology (Atmel)

AT89C52-20-PC

Microcontroller · PDIP-40 (40P6) · 8-bit MCU
Part Status: Obsolete
Data last refreshed Sep 9, 2026
Manufacturer
Microchip Technology (Atmel)
Mfr Part #
AT89C52-20-PC
Category
Microcontroller
Datasheet
View datasheet ↗
Availability & Pricing
ZDI Price$12.50
Last transacted2007-04-05
Market range$10.00 – $12.50
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Product Attributes

Electrical & Parametric
Cpu Family8051
Program Memory Size8 KB Flash
Program Memory TypeFlash
Data Ram Size256 bytes
Max Clock Frequency20 MHz
Number Of I/O32
Timers/Counters3 x 16-bit
Interrupt Sources8
Serial InterfaceFull-duplex UART
Supply Voltage4 V to 6 V (5 V nominal)
Operating Temperature0 °C to +70 °C (Commercial)
Mounting TypeThrough Hole
Package/CasePDIP-40
Pin Count40
Endurance (Flash)1,000 Write/Erase Cycles
Oscillator Frequency Range0 Hz to 24 MHz (static)
Power ModesIdle, Power-down
External Data Bus Width8-bit
Address Bus Width16-bit
AdcNo
DacNo
PwmNo
Physical & Thermal
Package / CasePDIP-40 (40P6)
Classification & Lifecycle
CategoryMicrocontroller
Type8-bit MCU
Part StatusObsolete

8-bit Microcontroller with 8K Bytes Flash, compatible with MCS-51/8051

Price History & Market Reference

Market Price Range

High$12.50
Low$10.00
Last$12.50
Price as of2007-04-05

ZDI Transaction

Last ZDI price$12.50
As of2007-04-05

Pricing reflects ZDI's transaction and market-reference data. Firm pricing confirmed per RFQ against current availability.

Part Activity

recent searches, RFQs & offers
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AT89C52-20-PC viewed on the web · Web User
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Recent search and sourcing activity for AT89C52-20-PC.

Engineering FAQ

AT89C52-20-PC is marked Obsolete — how does ZDI assure authenticity?
Obsolete and end-of-life parts carry elevated counterfeit risk, which is exactly why ZDI routes every lot through the full EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with source-country supplier vetting and full lot traceability before release.
What are the key specifications of AT89C52-20-PC?
Cpu Family: 8051; Program Memory Size: 8 KB Flash; Program Memory Type: Flash; Data Ram Size: 256 bytes; Max Clock Frequency: 20 MHz; Number Of I/O: 32.
What package is AT89C52-20-PC supplied in?
AT89C52-20-PC is supplied in the PDIP-40 (40P6) package.
Can ZDI source AT89C52-20-PC beyond the quantities shown?
Yes — ZD Integrated Circuits specializes in sourcing hard-to-find, obsolete, and excess electronic components through its global network, with counterfeit-avoidance inspection on every lot. Submit an RFQ with your target quantity for availability and pricing.

Documents & Media

Quality & Counterfeit Avoidance

ISO 9001 ERAI Member ESD Certified GIDEP Participant ZDI EQuality Process CAGE Code 1V8K2

ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.

Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.

✓Multi-stage EQuality Process™ inspection (QI-1 · QI-2/camera · QI-3)
✓Source-country supplier analysis, rating & review
✓Incoming inspection, RoHS verification, bake, full lot traceability
✓ESD-controlled handling · authentic parts guaranteed

AT89C52-20-PC is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.

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