Renesas Emulation Pod M37641T2-RPD-E - Manual (Page 14)

( 12 / 68 )
IMPORTANT
Note on Differences between the Actual MCU and Emulator:
• Emulator operation differs from mask MCU operation as listed below.
(1) Reset condition
(2) Power voltage
When using the emulator, it is not possible to use with the range of 4.15 to 4.5 V.
(3) Initial values of internal resources data at power-on
(3) Internal memory (ROM and RAM) capacities, etc.
(4) Ports P0, P1, P2, P3 and P4
0
Some I/O ports (P0, P1, P2, P3 and P4
0
) of the M37641T2-RPD-E are connected to the target
system via the port emulation circuit in the M37641T2-RPD-E. Therefore, the external bus
timing and the electrical characteristics are slightly different from those of the actual MCU.
For the differences of the I/O timing etc. between the emulator and the actual MCU, refer to
"5.2 Connection Diagrams" (page 47) and "5.3 Operation Timing" (page 49).
Table 1.1 lists the differences of the I/O level between the emulator and the MCU.
Table 1.1 Port I/O level
P0 CMOS CMOS CMOS CMOS
P1 CMOS CMOS CMOS CMOS
P2 (for TTL input level* 1 ) CMOS TTL CMOS CMOS
P2 (for CMOS input level* 1 ) CMOS CMOS CMOS CMOS
P3 CMOS CMOS CMOS CMOS
P4 CMOS CMOS CMOS CMOS
Emulator Actual MCU Emulator Actual MCU
Input level Output level
Port
*1 Setting by the port control register (0010H) port 2 input level select bit (bit6).
(6) Pins XIN and XOUT
Make note that in the oscillator circuit where a resonator is connected between pins XIN and
XOUT, oscillation does not occur because a flexible cable, buffer IC and other devices are
used between the evaluation MCU and the target system. See "Figure 3.10 Circuit in which
oscillation does not occur (same for XCIN-XCOUT)" (page 31).
(7) Pins XCIN and XCOUT
Make note that in the oscillator circuit where a resonator is connected between pins XCIN and
XCOUT, oscillation does not occur because a flexible cable, buffer IC and other devices are
used between the evaluation MCU and the target system. See "Figure 3.10 Circuit in which
oscillation does not occur (same for XCIN-XCOUT)" (page 31).
(8) Pin SYNCOUT
Make note that pin SYNCOUT does not output data.
(9) Pins D+, D-, Ext. Cap, LPF, AVcc and AVss
Refer to "3.4 Connecting USB-related Signals" (page 28).
(10) Other pins
As a flexible cable is used between the evaluation MCU and the target system, some
characteristics are slightly different from those of the actual MCU.
Therefore, be sure to evaluate your system with an evaluation MCU. Before starting
mask production, evaluate your system and make final confirmation with an ES
(Engineering Sample) version MCU.