8-pin Universial Programmer

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原文：
https://hackaday.io/project/171689-8-pin-universial-programmer



This is a "universal" programmer intended for various 8-pin chips:

I2C EEPROM chips, for example 24LC02B and AT24C64D
SPI EEPROM and Flash chips, for example M25P16 and W25Q128
Microwire EEPROM chips, for example 93AA66C
Some microcontrollers, for example ATtiny85.
The architecture of this programmer is somewhat based on those high end universal programmers: a USB MCU interfacing the computer, and an FPGA routing signals to the pins of the target chip. This specific implementation used a STM32F103CBT6 as the USB MCU, and a XC2C32A CPLD as the routing chip.

The hardware allows the programmer to interface any chip that:

In a DIP-8 package, or can be adapted to this pin layout using adapters,
Operates with 3.3V power on pin 8,
Operates with ground on pins 4 or 5,
Operates with 3.3V LVTTL logic levels,
Additionally, if I2C is used on pins 5, and 6, an external bypass can be used to allow faster I2C access.

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