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SST39SF040 Flash Programmer

Parts required to build this:

  • One Arduino Uno
  • Three 74HC595.
  • One SST39SF040 or lower capacity versions.

Wiring

Connections

Arduino Uno SST39SF040
A0 D0
A1 D1
A2 D2
A3 D3
A4 D4
5 D5
6 D6
7 D7
11 CE#
12 OE#
13 WE#

3x 74HC595 means that the pin from the Arudino Uno should be connected to all three shift registers.

Arduino Uno 3x 74HC595
9 Storage Register (STCP)
10 Serial Clock (SHCP)
5V Master Reset (MR)
GND Output Enable (OE)
Arduino Uno 74HC595 #1
2 Serial Input (DS)
Arduino Uno 74HC595 #2
3 Serial Input (DS)
Arduino Uno 74HC595 #3
4 Serial Input (DS)
74HC595 #1 SST39SF040
Q0 A0
Q1 A1
Q2 A2
Q3 A3
Q4 A4
Q5 A5
Q6 A6
Q7 A7
74HC595 #2 SST39SF040
Q0 A8
Q1 A9
Q2 A10
Q3 A11
Q4 A12
Q5 A13
Q6 A14
Q7 A15
74HC595 #3 SST39SF040
Q0 A16
Q1 A17
Q2 A18

Compiling

Note that I used avr-gcc instead of the Arduino IDE to compile this if you do not have avr-gcc it can be modified with ease just change int main() to void setup() and add void loop() {} at the bottom of the program and it will compile just fine in the Arduino IDE.

How to use this

Here is the part that runs on your computer I have only tested it on linux but I used a cross platform library so it may work on windows https://github.com/ComputerNerd/sst39sf040-computerside

Also my code can be easily adapted to run on the very similar lower capacity chips. The sst39sf020a and the sst39sf010a. Just change the main for loop to run for less bytes.