參數(shù)資料
型號： S1C88848D0A0100
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, UUC192
封裝： DIE-192
文件頁數(shù)： 75/174頁
文件大?。?/td> 1304K
代理商： S1C88848D0A0100
158
EPSON
S1C88848 TECHNICAL MANUAL
APPENDIX A S5U1C88000P1&S5U1C88816P2 MANUAL (Peripheral Circuit Board for S1C88848)
A.2 Precautions
Take the following precautions when using the S5U1C88000P1&S5U1C88816P2.
A.2.1 Precaution for operation
(1) Turn the power of all equipment off before
connecting or disconnecting cables.
(2) Make sure that the input ports (K00–K03) are
not all set to low when turning the power on
until the mask option data is loaded, as the
key-entry reset function may activated.
(3) The mask option data must be loaded before
debugging can be started.
A.2.2 Differences from actual IC
Caution is called for due to the following function
and property related differences with the actual
IC. If these precautions are overlooked, it may not
operate on the actual IC, even if it operates on the
ICE in which the S5U1C88000P1&S5U1C88816P2
has been installed.
(1) I/O differences
Interface power voltage
This board and target system interface voltage
is set to +3.3 V. To obtain the same interface
voltage as in the actual IC, attach a level shifter
or similar circuit on the target system side to
accommodate the required interface voltage.
Drive capability of each output port
The drive capability of each output port on this
board is higher than that of the actual IC.
When designing the application system and
software, refer to Chapter 7, "ELECTRICAL
CHARACTERISTICS" to confirm the drive
capability of each output port.
Input port characteristics
The AC characteristic of the input terminal is
different from that of the actual IC and it
affects the input interrupt function. Therefore,
evaluate the operation in the actual IC if the
rise/fall time of the input signal is long.
Protective diode of each port
All I/O ports incorporate a protective diode
for VDD and VSS, and the interface signals
between this board and the target system are
set to +3.3 V. Therefore, this board and the
target system cannot be interfaced with a
voltage exceeding VDD even if the output ports
are configured with open-drain output.
Pull-up resistance value
The pull-up resistance values on this board are
set to 300 k
which differ from those for the
actual IC. For the resistance values on the
actual IC, refer to Chapter 7, "ELECTRICAL
CHARACTERISTICS".
Note that when using pull-up resistors to pull
the input terminals high, the input terminals
may require a certain period to reach a valid
high level. Exercise caution if a key matrix
circuit is configured using a combination of
output and input ports, since rise delay times
on these input ports differ from those of the
actual IC.
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