SS1621B-48LQFP Shenzhen SI Semiconductors Co., LTD., SS1621B-48LQFP Datasheet - Page 13

• Manufacturer Part Number: SS1621B-48LQFP
• Description: RAM Mapping 32 X 4 LCD Controller for I/O uC
• Manufacturer: Shenzhen SI Semiconductors Co., LTD.

Application Circuits
Host controller with a SS1621 display system
Note: The connection of IRQ and RD pin can be selected depending on the requirement of the μC.
The voltage applied to V
Adjust VR to fit LCD display, at V
Adjust R (external pull-high resistance) to fit user’s time base clock.
32768Hz
Crystal
External Clock 1
External Clock 2
On-chip OSC
Clock Out
μC
LCD
pin must be lower than V
*
*
R
DD
=5V, V
CS
RD
WR
DATA
IRQ
OSCI
OSCO
COM0 COM3
LCD
1/2 or 1/3 Bias; 1/2, 1/3 or 1/4 Duty
=4V, VR=15kΩ+20%
~
LCD PANEL
p. 13
SS1621
DD.
SEG0 SEG31
~
VLCD
VDD
BZ
BZ
Last update: 2008-06-03 04:36
*
VR
Piezo
SS1621