Character Lcd Module With Led Backlight - Renesas M3A-HS64 User Manual

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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
PC9/TIOC2A
PC10/TIOC2B
Number
Connected to the character LCD interface (default)
JP2
Rev. 1.00 Apr 30, 2009
REJ11J0034-0100
LCD or SD
Expansion connector
D1
D2
D3
D4
MUX
EN# IN
LCD or SD
D1
D2
D3
D4
MUX
EN# IN
3.3 V
JP2
3
2
1
Figure 3.3.2 Character LCD Module Block Diagram
Table 3.3.1 Jumper Setting (JP2)
1-2 (Low)
3.3.2 Character LCD Module with LED Backlight
8
SDHI
8
DB0
S1A
DB0
S1B
DB1
S2A
DB1
S2B
DB2
S3A
DB2
S3B
DB3
S4A
DB3
S4B
DB4
DB5
DB6
DB4
S1A
DB7
S1B
DB5
S2A
S2B
DB6
S3A
S3B
DB7
S4A
S4B
3.3 V
Note: Pin names in red indicate the function used.
Connected to the SDHI
M3A-HS64G01 Functions
Character LCD module
DB0 Vo
DB1
DB2
A
DB3
K
DB4
DB5
DB6
DB7
R/W#
RS
E
2-3 (High)
5 V
VR1
5 V
VR2
3-15