Computex FP-40 - External I; O Function Timing with Vtref (1 Pin); External I; O Function Timing with 3.3 V I;F

Technical Information on On-board Flash Programmer FP-40 Aug. 31, 2023 (Second edition)
25
External I / O function timing with VTref (1 pin)
①
FP-40 setup time(4500ms,Only immediately after the FP-40 power supply,Usually
⑩
)
②
EX_STARTn goes high after input of Vtref
Note that EX_STARTn of FP-40 monitors the falling edge and does not recognize the rising edge.
③
HI retention of EX_STARTn (no specified time)
④
Write processing starts when the EX_STARTn falling edge is detected. (5ms)
⑤
Processing before writing
⑥
Writing
⑦
EX_BSY, EXOK change time
⑧
Result output(OK:EX_OK/HI,NG:EX_OK/LOW)
⑨
After FP-40 power down is detected, transition to next write occurs.
⑩
Waiting for the next start.
External I / O function timing with 3.3V I/F
①
FP-40 setup time(4500ms,Only immediately after the FP-40 power supply)
②
Write processing starts when EX33_STARTn falling edge is detected. (5ms)
③
Writing
④
EX_BSY, EXOK change time
⑤
Result output(OK:EX_OK/HI,NG:EX_OK/LOW)
⑥
When the power supply function of FP-40 is not used,EX33_OK is LOW when there is no VTref input.
When the power supply function of FP-40 is used,EX33_OK keeps HI.
Wait time for next write
⑦
When the power supply function of FP-40 is used,EX_STARTn After recognizing the falling edge, set
EX33_OK to LOW.