Fujitsu F2MC-8FX Hardware Manual page 557

Table 29.1-1 Pins Used for Fujitsu Standard Serial Onboard Programming
Pin Function
MOD, P13 Mode pin
X0, X1 Oscillation pins
RST Reset pin
P10/UI0/
Serial data input pin
EC0
P11/UO0/
Serial data output pin
TO01
P12/UCK0/
Serial clock input pin
TO00
Power supply volt-
V
CC
age supply
V
GND pin
SS
As the UI0, UO0, and UCK0 pins are also used by the user system, you need to provide a control circuit as
shown in Figure 29.1-2 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.)
CHAPTER 29 EXAMPLE OF SERIAL PROGRAMMING CONNECTION
Setting MOD=High and P13=Low sets serial write mode.
The CPU's internal operating clock during serial write mode is the oscillator
frequency divided by two.
Note that a 1MHz or higher oscillator frequency must be input when performing
serial writing.
Setting P10/UI0=Low specifies that serial write mode uses clock synchronous
communications. As this low input is handled by the TTXD pin of the flash
microcomputer programmer, you do not need to provide a pull-down for the P10/UI0
pin.
Setting P12/UCK0=High sets serial write mode. As this high input is handled by the
TCK pin of the flash microcomputer programmer, you do not need to provide a pull-
up for the P12/UCK0 pin.
pin
Common to the GND of the flash microcomputer programmer.
Figure 29.1-2 Control Circuit
AF220/AF210/AF120/AF110
programming control pin
AF220/AF210/AF120/AF110
/TICS pin
Description
-
-
MB95F108A/H
programming
> =
control pin
User
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