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Technical Information on SPI Flash Programmer FP-30
Oct. 15, 2019
(Second Edition)
3
■
SPI interface signals
Signal table
Target connection reference diagram
Pin No.
Signal name
Input/output
*1
1
SRST
*2
Input
2
VTref
Output
3
SCK
Input
4
GND
-
5
CS1
Input
6
SI/SIO0
Bidirectional
7
SO/SIO1
Bidirectional
8
SIO2
*3
Bidirectional
9
SIO3
*3
Bidirectional
10
CS2
*3
Input
*1
:
Input/output are determined based on the hardware board
side.
*2
: The SRST signal is an open collector output.
When this signal is “LOW” on the hardware board, set each SPI
signal to high impedance state.
*3
: NC if the pins are not used on the flash memory.
■
Notes
Make sure to use the appropriate adapter for FP-30. Operation is only guaranteed if the appropriate adapter is
used.
The wire length between the ISP connector and SPI should be as short as possible. The shorter the better.
It is recommended to insert a damping resistor between the ISP connector and the SPI flash memory.