Oscillation Clock Frequency And Serial Clock Input Frequency - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 26 EXAMPLE of CONNECTING SERIAL WRITING
26.2 Oscillation Clock Frequency and Serial Clock Input
Frequency
The MB90F334A serial clock frequency that can be input is determined by the following
expression:
Thus, set up the flash microcontroller programmer to change the serial clock input
frequency corresponding to the using oscillation clock frequency.

Oscillation Clock Frequency and Serial Clock Input Frequency

Serial clock frequencies that can be input are determined using the expression below.
Inputable serial clock frequency = 0.125 × oscillation clock frequency.
Table 26.2-1 shows the serial clock frequencies that can be input.
Table 26.2-1 Serial Clock Frequency that can be Input
Oscillation clock Maximum serial clock
frequency frequency that can be input
to the microcomputer
in 6 MHz
590
Maximum serial clock frequency
that can be set with AF220,
AF210, AF120, or AF110
750 kHz
Maximum serial clock
frequency that can be
set with AF200
500 kHz 500 kHz