Renesas M3A-HS64, User Manual

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M3A-HS64G01 Functions
3.3.2 Character LCD Module with LED Backlight
Rev. 1.00 Apr 30, 2009
3-15
REJ11J0034-0100
3
3.3.2 Character LCD Module with LED Backlight
The M3A-HS64G01 includes a connector for 16 x 2 semi-transmissive character LCD module (SD1602H, SUNLIKE). The
SH7264 general-purpose port output controls the character LCD module. The M3A-HS64G01 is intended only for writing from
the SH7264 to the character LCD modules. Therefore, the character LCD module R/W signal is fixed low.
The M3A-HS64G01 also includes a variable resistor (VR1) for the LCD driver voltage adjustment to control the LCD contrast
and a variable resistor (VR2) for LCD backlight adjustment.
SH7264 PK7 to PK0 pins are also used as SDHI pins. When using the character LCD module, SDHI cannot be used. The figure
below shows the character LCD module block diagram. The table below lists the jumper setting (JP2).
SH7264
PK0 /PWM1A/SD_D2
PK1 /PWM1B/SD_D3
PK2 /PWM1C/SD_CMD
PK3 /PWM1D/SD_CLK
PK4 /PWM1E/SD_D0
PK5 /PWM1F/SD_D1
PK6 /PWM1G/SD_WP
PK7 /PWM1H/SD_CD
D1
S1A
S1B
D2
S2A
S2B
D3
S3A
S3B
D4
S4A
S4B
MUX
EN# IN
LCD or SD
D1
S1A
S1B
D2
S2A
S2B
D3
S3A
S3B
D4
S4A
S4B
MUX
EN# IN
LCD or SD
DB0
8
SDHI
Character LCD module
8
DB0
DB1
DB2
DB3
VR1
5 V
DB3
DB2
DB1
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB4
DB5
DB6
DB7
DB7
DB6
DB5
DB4
PC9 /TIOC2A
PC10 /TIOC2B
RS
E
R/W#
Vo
VR2
5 V
A
Expansion connector
3.3 V
JP2
3.3 V
K
2
1
3
Note: Pin names in red indicate the function used.
Figure 3.3.2 Character LCD Module Block Diagram
Table 3.3.1 Jumper Setting (JP2)
Number 1-2 (Low) 2-3 (High)
JP2
Connected to the character LCD interface (default) Connected to the SDHI