# Which version of 8051 to use ?

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#### Jeffrey Peter

##### Member level 5
I need to know which version of 8051 to use for a simple wireless digital energy meter and pls mention the reason too... Thanks in advance

#### tpetar

Can I ask one practical question about wireless digital energy meter ?

You plan this like solution for home metering devices for payment system or its just like one project ?

Did you consider SMS messages?

What will happen if someone turn rf jummer to block reading of consuption of energy?

What encryption is considered? What if someone sends fake and incorrect data with other sender.

You can look 89S51 or 89S52 40-pins or Maxim-Dallas DS5000T (with lithium battery inside for clock) but his price is .

What energy meter device you using or planing to use?

Or you plan to make yours ? There is some plans if you need it.

Last edited:
Jeffrey Peter

### Jeffrey Peter

Points: 2

#### Jeffrey Peter

##### Member level 5
Its for a college project. Since I'm new to circuit designing, its vry hard for me to find the right components to use. Also I have no support for circuit designing from my college...:sad:

#### bigdogguru

Have you considered Silicon Labs family of 8051s?

They offer a wide range of devices, which all have a JTAG/C2 interface to facilitate programming and debugging:

USB Debug Adaptor for C8051Fxxx MCUs

Silicon Labs Mixed-Signal 8-bit Microcontrollers (MCUs)

Silicon Labs’ 8-bit mixed-signal MCUs feature five key advantages over all other 8-bit MCUs:

Lowest power consumption in the industry (down to 10 nA in sleep mode)
Highest performance integrated analog peripherals (specified to the same levels as standalone analog chips)
Fastest 8-bit CPU on the market (up to 100 MIPS)
Smallest package sizes on the market (as small as 2 mm x 2 mm)
The industry’s easiest to use smart interface technology (USB, Ethernet, CAN, LIN, LCD drivers, etc)

Silabs also offers very reasonably priced development boards, most in the $35 to$50 range and kits which combine the development board, USB based JTAG/C2 adapter, power supply, etc.

A good general purpose MCU is the C8051F120, the development board C8051F120TB is only $50 or the kit with includes the JTAG/C2 adapter, power supply, etc, C8051F120DK for$99.

You can either use the KEIL uVision IDE/Compiler or Silicon Labs own IDE and the Open Source SDCC - Small Device C Compiler for code development.

BigDog

Jeffrey Peter

Points: 2