Renesas IE-78044-R-EM, User Manual

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CHAPTER 3 DIFFERENCES BETWEEN TARGET DEVICES
3.1.2 Setting mask option with DIP-SW
P8 through P12* also serve as FIP pins (-40 V). Connecting the mask option resistor to these pins is specified by
the DIP switch on IE-78044-R-EM in 1 bit units. The connection destination (V
SS
or V
LOAD
) is specified by the slide switch
below the DIP switch in 4 bit units.
Fig. 3-1 Setting Mask Option (factory-set condition)
*:
µ
PD78024 Subseries is not provided with P12.
Remarks : When emulating
µ
PD78024 Series, the target of mask option to be set with DIP-SW will be FIP0 to FIP25.
3.2 Target Interface Circuit
The target interface circuit allows the device to operate in the same manner as the target device on the IE-78000-
R. It consists of an emulation device and various gates (ICs, such as CMOS and TTL).
To debug the target system connected to IE-78000-R, emulation is carried out by the target interface circuit in IE-
78000-R, as if the actual target device were operating on the target system.
Individual target devices consist of CMOS LSIs. The target interface circuit emulation device also consists of CMOS
LSIs. Therefore, the DC and AC characteristics for the target interface circuit are almost the same as those for the target
device (V
DD
= 5 V when operating).
However, the DC and AC characteristics for the target interface circuit are different from those for the target device,
when the emulation device signals are input/output through gates.
Note that, a gate delay time (whose duration varies, depending on the gate) occurs each time the signal goes through
a gate. This is responsible for the differences in the AC characteristics.
Therefore, design the target system, giving thorough consideration to these points.
Caution : When using IE-78000-R and IE-78044-R-EM, 5 V must be supplied to the target system (as the
supply voltageV
DD
).
MASK OPTION SW
VLOAD VSS
0-1
SW6
2-5
SW7
6-9
SW8
10-13
SW9
14-17
SW10
18-21
SW11
22-25
SW12
26-29
SW13
30-33
SW14
FIP
ON
0
SW1 SW2 SW3
SW4
SW5
FIP0-FIP15: pulled down to V
LOAD
15 1 2 3 4 5 6 7 8 9 1011121314 1617 1819202122 23 24 25 26272829303132 33
FIP16-FIP33: not connected