Fujitsu F2MC-8FX Hardware Manual page 560

CHAPTER 29 EXAMPLE OF SERIAL PROGRAMMING CONNECTION
The circuit [1] shown in Figure 29.2-1 is required if you want to disconnect the UCK0 and RST pins from
the user circuit during serial writing. (The /TICS signal of the flash microcomputer programmer outputs
low during serial writing and this disconnects the user circuit.)
If it is not necessary to disconnect from the user circuit, the connection to /TICS and circuit [1] are not
required. See the connection example in Figure 29.3-1.
The UI0 and UO0 pins are also used by the user system and the control circuit shown below like that used
for the UCK0 pin is required if you want to disconnect from the user circuit during serial writing.
(The /TICS signal of the flash microcomputer programmer can be used to disconnect from the user circuit
during serial writing. See the connection example in Figure 29.1-2 for details.)
Only connect to the AF220, AF210, AF120, or AF110 while the user power supply is turned off.
Note:
The pull-up and pull-down resistances in the above example connection are examples only and may
be adjusted to suit your system. If variation in the input level to the MOD pin is possible due to noise
or other factors, it is also recommended that you use a capacitor or other method to minimize noise.
546
Figure 29.2-2 Control Circuit
AF220/AF210/AF120/AF110
programming control pin
AF220/AF210/AF120/AF110
/TICS pin
MB95F108A/H
programming
> =
control pin
User