SIC63616-(Rev. 1.0) NO. P218
3240-0412
<I/O ports>
- Do not set the P1x ports used for multiple key entry reset to output mode as the S5U1C63000P6 and
S5U1C6F632P2 may be reset.
- Do not enable the input interrupt or peripheral input function of the I/O port that has been set to out-
put mode. An interrupt processing may start in the S5U1C63000P6 and S5U1C6F632P2.
<R/f converter>
- The R/f converter function is implemented using the S1C6F632 chip included in the S5U1C6F632P2
board.
- If the debugger makes program execution to break while the R/f converter is counting the oscillation,
the R/f converter does not stop counting. Note that the R/f converter will not able to load a proper
result if program execution is resumed from that point.
- The following shows the oscillation characteristics (reference value) of the R/f converter on the
S5U1C6F632P2:
R/f converter oscillation frequency - capacitance characteristic (reference value)
Capacitance [pF]
Oscillation frequency [Hz]
470
1,000
2,200
4,700
1,000,000
100,000
10,000
1,000
100
10
1
R = 50 k
Ω
R/f converter oscillation frequency - resistance characteristic (reference value)
Resistance [k
Ω
]
Oscillation frequency [Hz]
1
10
100
1,000
1,000,000
100,000
10,000
1,000
100
10
1
C = 1000 pF