aPPenDiX B PeRiPheRal CiRCuiT BOaRDS FOR S1C6F016
S1C63003/004/008/016 TeChniCal Manual
Seiko epson Corporation
aP-B-11
(Rev. 1.1)
<Reset circuit>
Keep in mind that the operation sequence from when the ICE and the peripheral circuit boards (S5U1C63000P6
and S5U1C6F016P2) are powered on until the time at which the program starts running differs from the sequence
from when the actual IC is powered on till the program starts running. This is because S5U1C63000P6 becomes
capable of operating as a debugging system after the user program and optional data are downloaded.
When operating the ICE after placing it in free-running mode*, always apply a system reset. A system reset can
be performed by pressing the reset switch on S5U1C63000P6, by a reset pin input, or by holding the input ports
high simultaneously. (* Free running mode: supported by S5U1C63000H1/2 only)
<i/O ports>
Do not set the P0x ports used for multiple key entry reset to output mode as this tool may be reset.
<R/F converter>
• The R/F converter function is implemented using the S1C6F016 chip included in the S5U1C6F016P2 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
S5U1C6F016P2:
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