
R0E417250MCU00 User
’s Manual
2. Setup
R20UT3587EJ0302 Rev.3.02
Page 34 of 232
Sep.01. 21
2.8.2 Using an Internal Oscillator Circuit Board
Kinds of Oscillator Circuit Boards
An oscillator module (8 MHz) is mounted on IC21 at shipment of the R0E417250MCU00. If you wish to change the
frequency, replace the oscillator module.
(1) Replacing the Oscillator Module
Remove the MCU unit from the E100 emulator main unit, and replace the oscillator module on IC21 (see Figure 2.7).
CN1
40a
1a
CN2
40a
1a
CN3
40a
1a
40b
1b
CN4
40a
1a
40b
1b
40b
1b
CN6
1
50
51
100
CN5
1
50
51
100
40b
1b
40b
1b
40b
1b
8
11
14
1
4
7
IC21
1
4
7
8
11
14
SG-8002DB
SG-8002DC
EPSON TOYOCOM
SG-8002DC/DB Series
(power voltage 2.7 to 3.6V: PC/SC)
Figure 2.7 Replacing the oscillator module
CAUTION
Note on Replacing the Oscillator Module and Oscillator Circuit Board:
⚫
Always shut OFF power when replacing the oscillator module. Otherwise, internal circuits may be damaged.
⚫
When replacing the oscillator module, remove it with a tool such as an IC extractor so as not to damage the
board. If the board is damaged, the pattern on the board may be cut and the emulator may not be able to operate.