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D87C521 on a board, in 3D

D87C521

AMD

0℃~+70℃ 12MHz 256Byte 32 4.5V~5.5V 51 Series 8 Bit 8KB Built-in+External EPROM CDIP-40 Microcontrollers (MCU/MPU/SOC)

Extended
DatasheetJLCPCBLCSCamd/D87C521
Category
Microcontrollers (MCU, MPU, SOC)
Package
CDIP-40
Pins
40

Overview

The D87C521 is a microcontroller made by AMD in a CDIP-40 package with 40 pins. 0℃~+70℃ 12MHz 256Byte 32 4.5V~5.5V 51 Series 8 Bit 8KB Built-in+External EPROM CDIP-40 Microcontrollers (MCU/MPU/SOC).

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:D87C541, from EasyEDA) and its footprint (EasyEDA_Cloud:DIP-40_L52.0-W13.7-P2.54-LS15.2-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C3229532).

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)32EN#/VPP31ALE/PROG#30PSEN#29P2.7(A15)28P2.6(A14)27P2.5(A13)26P2.4(A12)25P2.3(A11)24P2.2(A10)23P2.1(A9)22P2.0(A8)21VSS20XTAL119XTAL218(RD#)P3.717(WR#)P3.616(T1)P3.515(T0)P3.414(INT1#)P3.313(INT0#)P3.212(TXD)P3.111(RXD)P3.010RESET9P1.78P1.67P1.56P1.45P1.34P1.23(T2EX)P1.12(T2)P1.01
EasyEDA_Cloud:D87C541From EasyEDA

Footprint

12345678910111213141516171819202122232425262728293031323334353637383940
EasyEDA_Cloud:DIP-40_L52.0-W13.7-P2.54-LS15.2-BLFrom EasyEDA

Parameters

10
CPU Core
51 Series
CPU Maximum Speed
12MHz
Core Size
8 Bit
Number of I/O
32
Operating Temperature
0℃~+70℃
Oscillator Type
Built-in+External
Program Memory Type
EPROM
Program Storage Size
8KB
RAM Size
256Byte
Voltage - Supply
4.5V~5.5V

Order codes

1

Pinout

40
The pins of the D87C521
PinNameType
1(T2)P1.0Unspecified
2(T2EX)P1.1Unspecified
3P1.2Unspecified
4P1.3Unspecified
5P1.4Unspecified
6P1.5Unspecified
7P1.6Unspecified
8P1.7Unspecified
9RESETUnspecified
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
18XTAL2Unspecified
19XTAL1Unspecified
20VSSUnspecified
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
31EN#/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

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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 D87C521?

Yes. The symbol is EasyEDA_Cloud:D87C541 and the footprint EasyEDA_Cloud:DIP-40_L52.0-W13.7-P2.54-LS15.2-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the D87C521?

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

Where is the D87C521 datasheet?

AMD publishes it: the Datasheet link on this page opens it.

Where can I order the D87C521?

JLCPCB lists it as part C3229532, with 0 in stock; the sellers' links on this page open their listings.

What can replace the D87C521?

Parts like it in the library: the D87C52T2 by AMD, the D87C541 by AMD and the AP87C51FC20F8 by Rochester Electronics, LLC. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

3