doubt on programmer?

[Eli]

 

guys i have USB ISP which has DB10(mosi,miso,sck,tx,rx,XTal,rst,NC,vcc,gnd) used to program avrs51 .

i have the following queries

1]Is 8051 programmed through spi mode using (mosi,miso,sclk)  or  (txd,rxd)?

if (mosi,miso,sclk) lines are used then what is the use (txd,rxd) lines

2]if 8051 is to be used for serial communication then for loopback test should i short (mosi and miso) or (txd and rxd) lines?

[Amrith]

8051 does not have SPI interface. 8051 are programmed using Tx & Rx lines. where as AVR controllers have SPI communication & these controllers are programmed using MOSI, MISO & SClk.

Kindly mention exact part number of 8051 you are using.

[Eli]

im using AT89s52  micro controller

 

[Amrith]

1. 89C52 can be programmed using SPI as well as UART.

2. For loop back test you need to sort Tx & Rx lines

[Eli]

but amrith you told that 8051 does not have spi interface then how could it be programmed  in spi mode

 

[Amrith]

Hi Eli,

8051 controller has many variants, part number with 8051 does not have SPI interface.

89C52 is advanced version of 8051 & 89C52 has SPI interface.

kindly share your further clarifications.

[Tulasi Prasanna]

Please post the source code to interface at89s52 and Serial Graphic LCD (SPI 4line )

[Author]

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