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AT89C55WD-24PU on a board, in 3D

AT89C55WD-24PU

Microchip Technology

-40℃~+85℃ 20KB 24MHz 256Byte 32 4.5V~5.5V 51 Family 8 Bit Built-in FLASH DIP-40 Microcontrollers (MCU/MPU/SOC) ROHS

Extended
DatasheetJLCPCBLCSCmicrochip/AT89C55WD-24PU
Category
Microcontrollers (MCU, MPU, SOC)
Package
DIP-40
Pins
40

Overview

The AT89C55WD-24PU is a microcontroller made by Microchip Technology in a DIP-40 package with 40 pins. -40℃~+85℃ 20KB 24MHz 256Byte 32 4.5V~5.5V 51 Family 8 Bit Built-in FLASH DIP-40 Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:AT89C55WD-24PU, from EasyEDA) and its footprint (Package_DIP:DIP-40_W25.4mm, from KiCad's library), ready for a KiCad board. 42 are in stock at JLCPCB (part C48867). 2 open-source boards in 1 repository on GitHub use it.

Symbol

P1.0(T2)1P1.1(T2EX)2P1.23P1.34P1.45P1.56P1.67P1.78RST9P3.0(RXD)10P3.1(TXD)11P3.2(INT0#)12P3.3(INT1#)13P3.4(T0)14P3.5(T1)15P3.6(WR#)16P3.7(RD#)17XTAL218XTAL119GND20P2.0(A8)21P2.1(A9)22P2.2(A10)23P2.3(A11)24P2.4(A12)25P2.5(A13)26P2.6(A14)27P2.7(A15)28PSEN#29ALE/PROG#30EA#/VPP31P0.7(AD7)32P0.6(AD6)33P0.5(AD5)34P0.4(AD4)35P0.3(AD3)36P0.2(AD2)37P0.1(AD1)38P0.0(AD0)39VCC40
EasyEDA_Cloud:AT89C55WD-24PUFrom EasyEDA

Footprint

12345678910111213141516171819202122232425262728293031323334353637383940
Package_DIP:DIP-40_W25.4mmFrom KiCad's library

Parameters

11
CPU Core
51 Series
CPU Maximum Speed
24MHz
Core Size
8 Bit
Features
Watchdog reset
Number of I/O
32
Operating Temperature
-40℃~+85℃
Oscillator Type
Built-in
Program Memory Type
FLASH
Program Storage Size
20KB
RAM Size
256Byte
Voltage - Supply
4.5V~5.5V

Order codes

1

Pinout

40
The pins of the AT89C55WD-24PU
PinNameType
1P1.0(T2)Unspecified
2P1.1(T2EX)Unspecified
3P1.2Unspecified
4P1.3Unspecified
5P1.4Unspecified
6P1.5Unspecified
7P1.6Unspecified
8P1.7Unspecified
9RSTUnspecified
10P3.0(RXD)Unspecified
11P3.1(TXD)Unspecified
12P3.2(INT0#)Unspecified
13P3.3(INT1#)Unspecified
14P3.4(T0)Unspecified
15P3.5(T1)Unspecified
16P3.6(WR#)Unspecified
17P3.7(RD#)Unspecified
18XTAL2Unspecified
19XTAL1Unspecified
20GNDUnspecified
21P2.0(A8)Unspecified
22P2.1(A9)Unspecified
23P2.2(A10)Unspecified
24P2.3(A11)Unspecified
25P2.4(A12)Unspecified
26P2.5(A13)Unspecified
27P2.6(A14)Unspecified
28P2.7(A15)Unspecified
29PSEN#Unspecified
30ALE/PROG#Unspecified
31EA#/VPPUnspecified
32P0.7(AD7)Unspecified
33P0.6(AD6)Unspecified
34P0.5(AD5)Unspecified
35P0.4(AD4)Unspecified
36P0.3(AD3)Unspecified
37P0.2(AD2)Unspecified
38P0.1(AD1)Unspecified
39P0.0(AD0)Unspecified
40VCCUnspecified

Open-source boards using it

All 2
  • 2 layers190 × 111 mmRetroCom, the printed circuit board in 3D

    RetroCom

    SamyIOoOI/RetroCom

    A 4-Station one-to-one two-way INTERCOM built around the AT89C52-PI24 RetroMCU (8051 Core).

    92 partsGPL-3.0
  • 2 layers130 × 80 mmRetroCom Station2, the printed circuit board in 3D

    RetroCom Station2

    SamyIOoOI/RetroCom

    A 4-Station one-to-one two-way INTERCOM built around the AT89C52-PI24 RetroMCU (8051 Core).

    64 partsGPL-3.0

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A picture
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A picture that opens the part, for a README
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Questions

Is there a KiCad symbol and footprint for the AT89C55WD-24PU?

Yes. The symbol is EasyEDA_Cloud:AT89C55WD-24PU and the footprint Package_DIP:DIP-40_W25.4mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the AT89C55WD-24PU?

DIP-40, with 40 pins. Its footprint is drawn on this page.

Where is the AT89C55WD-24PU datasheet?

Microchip Technology publishes it: the Datasheet link on this page opens it.

Where can I order the AT89C55WD-24PU?

JLCPCB lists it as part C48867, with 42 in stock; the sellers' links on this page open their listings.

What can replace the AT89C55WD-24PU?

Parts like it in the library: the STC89C516RD+40I-PDIP40 by STC Micro, the STC89C52RC-40I-PDIP40 by STC, the AT89S52-24PU by Microchip Technology and the PIC18F45K80-I/P by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the AT89C55WD-24PU?

2 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8