Note On Differences Between The Actual Mcu And Emulator - Renesas Emulation Pod M37641T2-RPD-E User Manual

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
(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
(6) Pins XIN and XOUT
(7) Pins XCIN and XCOUT
(8) Pin SYNCOUT
(9) Pins D+, D-, Ext. Cap, LPF, AVcc and AVss
(10) Other pins
IMPORTANT
When using the emulator, it is not possible to use with the range of 4.15 to 4.5 V.
Some I/O ports (P0, P1, P2, P3 and P4
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
Port
P0
P1
P2 (for TTL input level*
P2 (for CMOS input level*
P3
P4
*1 Setting by the port control register (0010H) port 2 input level select bit (bit6).
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).
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).
Make note that pin SYNCOUT does not output data.
Refer to "3.4 Connecting USB-related Signals" (page 28).
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.
0
) of the M37641T2-RPD-E are connected to the target
0
Input level
Emulator Actual MCU
CMOS CMOS
CMOS CMOS
1
) CMOS
1
) CMOS CMOS
CMOS CMOS
CMOS CMOS
( 12 / 68 )
Output level
Emulator
CMOS
CMOS
TTL CMOS
CMOS
CMOS
CMOS
Actual MCU
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS