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H83827R Datasheet(PDF) 4 Page - Renesas Technology Corp |
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H83827R Datasheet(HTML) 4 Page - Renesas Technology Corp |
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4 / 663 page  Rev. 6.00 Aug 04, 2006 page iv of xxxiv Notes: The following limitations apply when using the on-chip emulator for program development and debugging. 1. Pin P32 is reserved for use exclusively by the on-chip emulator and cannot be used for other operations. 2. Pins P85, P86, and P87 cannot be used. In order to use these pins it is necessary to install additional hardware on the user board. 3. The address area from H'E000 to H'EFFF is used by the on-chip emulator and therefore cannot be accessed by the user. 4. The address area from H'F300 to H'F6FF must not be accessed under any circumstances. 5. When the on-chip emulator is used, pin P32 functions as an I/O pin, pins P85 and P86 function as input pins, and pin P87 functions as an output pin. 6. It is necessary to change the user board for LCD display debugging. This item does not apply if LCD display is not used or if the emulator is not operated in writer mode. User Board Changes The following changes are necessary. • Connect pin V1 to the VCC power supply. Also connect capacitors and resistors to pins V1, V2, and V3. Connect a capacitor and a resistor to pins V1, V2, and V3. • No SEG signals are output from pins P85/SEG30, P86/SEG31, and P87/SEG32, so the display is unstable. In addition, a DC voltage is applied. If damage to the LCD is a concern, disconnect the above three pins from the LCD. A connection example is shown below. Refer to the emulator user’s manual for information on other settings. Normal Operation Debugging Vcc LCD H8/38327 H8/38427 Vcc LCD H8/38327 H8/38427 P8 7/SEG32 P8 6/SEG31 P8 5/SEG30 P8 7/SEG32 P8 6/SEG31 P8 5/SEG30 V2 V3 R = 240 Ω* C = 0.1 µF* R R R C C C V0 Vcc V1 V0 Vcc V2 V3 Connect Connect Dis- connect Disonnect Disconnect Connect Emulator connectors Emulator connectors Note: * R and C values are intended only as guidelines. They may be adjusted based on the indications. |
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