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AT89LP51-20PU on a board, in 3D

AT89LP51-20PU

Microchip Technology

-40℃~+85℃ 2.4V~5.5V 20MHz 256Byte 36 4KB 51 Series 8 Bit Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、Software reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog PDIP-40 Microcontrollers (MCU/MPU/SOC) ROHS

Extended
DatasheetJLCPCBLCSCmicrochip/AT89LP51-20PU
Category
Microcontrollers (MCU, MPU, SOC)
Package
PDIP-40
Pins
40

Overview

The AT89LP51-20PU is a microcontroller made by Microchip Technology in a PDIP-40 package with 40 pins. -40℃~+85℃ 2.4V~5.5V 20MHz 256Byte 36 4KB 51 Series 8 Bit Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、Software reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog PDIP-40 Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:AT89LP51-20PU_C1340447, from EasyEDA) and its footprint (Package_DIP:DIP-40_W25.4mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1340447).

Symbol

VCC40P0.0(AD0)39P0.1(AD1)38P0.2(AD2)37P0.3(AD3)36P0.4(AD4)35P0.5(AD5)34P0.6(AD6)33P0.7(AD7)32POL31P4.2(ALE)30P4.3(PSEN#)29P2.7(A15)28P2.6(A14)27P2.5(A13)26P2.4(A12)25P2.3(A11)24P2.2(A10)23P2.1(A9)22P2.0(A8)21GND20(XTAL1)P4.019(XTAL2)P4.118(RD#)P3.717(WR#)P3.616(T1)P3.515(T0)P3.414(INT1#)P3.313(INT0#)P3.212(TXD)P3.111(RXD)P3.010RST9(SCK)P1.78(MISO)P1.67(MOSI)P1.56P1.45P1.34P1.23(T2EX)P1.12(T2)P1.01
EasyEDA_Cloud:AT89LP51-20PU_C1340447From EasyEDA

Footprint

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

Parameters

11
CPU Core
51 Series
CPU Maximum Speed
20MHz
Core Size
8 Bit
Features
Power-on reset (POR), Undervoltage detection (BOR/LVD/LVR/LVI), Watchdog reset, Software reset, External pin reset (NRST), Built-in general-purpose timer, Programmable watchdog
Number of I/O
36
Operating Temperature
-40℃~+85℃
Oscillator Type
Built-in
Program Memory Type
FLASH
Program Storage Size
4KB
RAM Size
256Byte
Voltage - Supply
2.4V~5.5V

Order codes

2

Pinout

40
The pins of the AT89LP51-20PU
PinNameType
1(T2)P1.0Unspecified
2(T2EX)P1.1Unspecified
3P1.2Unspecified
4P1.3Unspecified
5P1.4Unspecified
6(MOSI)P1.5Unspecified
7(MISO)P1.6Unspecified
8(SCK)P1.7Unspecified
9RSTUnspecified
10(RXD)P3.0Unspecified
11(TXD)P3.1Unspecified
12(INT0#)P3.2Unspecified
13(INT1#)P3.3Unspecified
14(T0)P3.4Unspecified
15(T1)P3.5Unspecified
16(WR#)P3.6Unspecified
17(RD#)P3.7Unspecified
18(XTAL2)P4.1Unspecified
19(XTAL1)P4.0Unspecified
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
29P4.3(PSEN#)Unspecified
30P4.2(ALE)Unspecified
31POLUnspecified
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

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Questions

Is there a KiCad symbol and footprint for the AT89LP51-20PU?

Yes. The symbol is EasyEDA_Cloud:AT89LP51-20PU_C1340447 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 AT89LP51-20PU?

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

Where is the AT89LP51-20PU datasheet?

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

Where can I order the AT89LP51-20PU?

JLCPCB lists it as part C1340447, with 0 in stock; the sellers' links on this page open their listings.

What can replace the AT89LP51-20PU?

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.

Parts like it

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