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6 lCD DRIVER
6 LCD Driver
The S5U1C63000H6 has an LCD driver for emulating built-in LCD driver models.
Note, however, that some functions supported with the S5U1C63000H6 may not be available in the model to be
used. For details of the LCD driver functions, refer to the technical manual for each model.
6.1 Differences from actual IC
Be aware that there are differences on the functions and characteristics from those of the actual IC as shown below.
If they are not taken into consideration, the program may not be operated properly on the actual IC even if there is
no problem on the S5U1C63000H6 with the LCD diver.
(1) Initialization
In the actual IC, contents of the LCD segment memory are indefinite at system reset and the output LCD drive
waveform is also indefinite according to the memory contents. It means that the segment memory and the LCD
drive waveforms are coincident even though both are indefinite. However, in the S5U1C63000H6, the segment
memory and the output LCD drive waveform are not coincident. Therefore, be sure to create the initial routine
so that the LCD segment memory will be cleared (or set) after a system reset.
(2) lCD segment RaM
In the actual IC, when reading a segment memory address that contains both the bits assigned for the LCD seg-
ments and the bits not assigned, the unassigned bits are always read as "0." However, in the S5U1C63000H6,
the unassigned bits in the segment memory can be read and written as memory bits. Therefore, the program
must ignore these unassigned bit values when a segment memory word is read out.
(3) Drive capability of SEG and COM terminals
The output drive capability of the SEG and COM terminals in the S5U1C63000H6 is different from that of the
actual IC. The S5U1C6300H6 cannot be used for evaluating electrical characteristics. The system should be de-
signed in consideration of the electrical characteristics described in the technical manual of each model.
(4) lCD dive voltage
The LCD drive voltage in the S5U1C63000H6 may differ from that of the actual IC.
6.2 Connection with the Target System
Use the supplied connection cables (100-pin/50-pin × 2 flat type, 34-pin flat type) to connect between the
S5U1C63000H6 and the LCD connectors on the target board.
mark
16
(for models in which the memory-bit assignment for the LCD segments is fixed)
CN5
(34-pin)
Figure 6.2.1 Connecting with the Target System
EPSOn
mark
Connection cable
To target board
(S1C63 Family In-Circuit Emulator)
CN4-1
(50-pin)
CN4-2
(50-pin)
S5U1C63000H6 ManUal
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