Chapter 7 Precautions - Epson S5U1C88000H5 Manual

7 PRECAUTIONS
7 P
CHAPTER
(1) Connecting and disconnecting the equipment
Be sure to turn the personal computer and the S5U1C88000H5 off when installing the Peripheral
Circuit Board or connecting cables and disconnecting them. Otherwise, the internal circuits of the
equipment may be destroyed.
(2) Turning the power on and off
Do not turn the S5U1C88000H5 on for at least 10 seconds after it is turned off. Turning the power on
without the interval may result in abnormal operation of the S5U1C88000H5 or in the circuit breaker
cutting off. It may also cause a malfunction.
(3) Overcurrent protection
When the S5U1C88000H5 is turned on under the condition that V
target system, the AC adapter cuts off the output current due to the overcurrent protection function.
In this case, the Power LED on the S5U1C88000H5 does not light up.
3 A or a more steady-state current on the target system cuts off the circuit breaker of the
S5U1C88000H5.
(4) Difference between the emulation memory and the RAM in the actual IC
Both the S5U1C88000H5 emulation memory and the RAM in the actual IC are undefined at power-on.
The set values are not same, therefore be sure to initialize the memory with the program.
(5) Difference between memory operations by the debugging commands and memory
access by programs
Memory dump and other memory operations by the debugging commands use the firmware clock
(default: 4 MHz) in the S5U1C88000H5. Memory access by the target program uses an emulation clock
similar to the actual IC. Therefore, the read data may differ between the program and the debug
command when low-speed devices or devices that delay outputting data are used on the target board.
In such cases, use a low-frequency firmware clock set by the debugging command (CLK command).
(6) Setting up USB port
USB functions may be disabled in some personal computers by default. Make sure that the USB port
is enabled and setup the BIOS configuration of the personal computer if necessary.
Do not connect the plural S5U1C88000H5 to the USB port. One personal computer can be connected
only one S5U1C88000H5.
10
RECAUTIONS
EPSON
and V are short-circuited on the
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(S1C88 FAMILY IN-CIRCUIT EMULATOR)
S5U1C88000H5