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EPSON
S1C8F360 TECHNICAL MANUAL
8 SUMMARY OF NOTES
8 SUMMARY OF NOTES
8.1 Notes Related to the PROM
(1) Be sure to erase the PROM before writing data.
(2) The PROM data can be rewritten up to 1,000
times. (Count up when an erasing and writing is
performed.)
(3) The circuit board should be designed so that the
terminals can switch the input signals that differ
between the PROM serial programming mode
and the normal operation mode.
(4) The terminals for the PROM programmer
should be set correctly according to the operat-
ing mode and fixed so that they cannot be
changed during operation. Especially the SPRG
terminal must be fixed at a Low level in the
programming mode, while they must be fixed
at a High level in the normal operation mode.
Changing the voltage level may damage the IC.
(5) If the operation of the S1C8F360 is unstable
even though the writing and verification of the
PROM data was completed normally, write and
verify the PROM data without erasing the
PROM.
(6) Rewriting the PROM is done at on the user's
own risk.
8.2 Notes on Differences form the
S1C883xx/S1C888xx
Be aware of the following notes when using the
S1C8F360 as a development tool for the S1C883xx/
S1C888xx.
Memory map
The S1C8F360 has a built-in ROM and RAM larger
than most of all the S1C883xx and S1C888xx. When
using the S1C8F360 as a development tool of for the
S1C883xx/S1C888xx, pay attention to the memory
size.
Power supply
The S1C8F360 is operable with a supply voltage
within the range of 2.0 V to 5.5 V. Note, however,
that the electrical characteristics are different from
those of the S1C883xx/S1C888xx. Refer to Chapter
10, "ELECTRICAL CHARACTERISTICS".
Initial reset
Note that the power-on reset time differs from the
S1C883xx/S1C888xx because the power supply is
different.
Oscillation circuit
In the S1C8F360, a crystal oscillator can only be
used for the OSC1 oscillation circuit and a crystal or
ceramic oscillator for the OSC3 oscillation circuit.
Furthermore, pay attention to the difference on the
oscillation start time according to the supply
voltage. Be sure there is enough margin especially
for stabilizing the OSC3 oscillation when control-
ling the peripheral circuit that uses the OSC3 clock.
LCD driver
The LCD drive voltage range of the S1C8F360 is
different from that of the S1C883xx/S1C888xx.
Check the electrical characteristic differences by
referring to this manual and the Technical Manual
for the S1C883xx/S1C888xx before designing the
LCD unit. Furthermore, the LCD drive duty and
built-in LCD power supply type options of the
S1C883xx/S1C888xx are changed to software
selectable functions.
Mask option
In the S1C8F360, the specifications selected by the
S1C883xx/S1C888xx mask options are fixed and
cannot be selected. Therefore, some optional
functions cannot be used in the S1C8F360. Check
whether the functions are enabled or not in this
manual and the Technical Manual for the
S1C883xx/S1C888xx.
Other
The A/D converter and the analog comparator
cannot be used simultaneously.
Refer to "Programming notes" in each peripheral
section for precautions of each peripheral circuit.