SS1621B-48LQFP Shenzhen SI Semiconductors Co., LTD., SS1621B-48LQFP Datasheet - Page 14

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

Command Summary
READ
WRITE
READ-MODIFY-WRITE
SYS DIS
SYS EN
LEC OFF
LCD ON
TIMER DIS
WDT DIS
TIMER EN
WDT EN
TONE OFF
TONE ON
CLR TIMER
CLR WDT
XTAL 32K
RC 256K
EXT 256K
BLAS 1/2
BLAS 1/3
TONE 4K
TONE 2K
F1
F2
IRQ DIS
IRQ EN
Name
1 1 0 A5A4A3A2A1A0D0D1D2D3
1 0 1 A5A4A3A2A1A0D0D1D2D3
1 0 1 A5A4A3A2A1A0D0D1D2D3
1 0 0 0000-0000-X
1 0 0 0000-0001-X
1 0 0 0000-0010-X
1 0 0 0000-0011-X
1 0 0 0000-0100-X
1 0 0 0000-0101-X
1 0 0 0000-0110-X
1 0 0 0000-0111-X
1 0 0 0000-1000-X
1 0 0 0000-1001-X
1 0 0 0000-11XX-X
1 0 0 0000-111X-X
1 0 0 0001-01XX-X
1 0 0 0001-10XX-X
1 0 0 0001-11XX-X
1 0 0 0010-abX0-X
1 0 0 0010-abX1-X
1 0 0 010X-XXXX-X
1 0 0 011X-XXXX-X
1 0 0 100X-0XXX-X
1 0 0 100X-1XXX-X
1 0 0 101X-X000-X
1 0 0 101X-X001-X
ID
Command Code
p. 14
D/C
D Read data from the RAM
D Write data to the RAM
D READ and WRITE to the RAM
C
C Turn on system oscillator
C Turn off LCD bias generator
C Turn on LCD bias generator
C Disable time base output
C Disable WDT time-out flag output
C Enable time base output
C Enable WDT time-out flag output
C Turn off tone outputs
C Turn on tone outputs
C
C Clear the contents of WDT stage
C
C
C
C
C
C Tone frequency, 4kHz
C Tone frequency, 2kHz
C Disable IRQ output
C Enable IRQ output
C
C
Turn off system oscillator and LCD
bias generator
Clear the contents of time base gen-
erator
System clock source, crystal oscil-
lator
System clock source, external clock
source
System clock source, external clock
source
LCD 1/2 bias option
ab=00:2 commons option
ab=01:3 commons option
ab=10:4 commons option
LCD 1/3 bias option
ab=00:2 commons option
ab=01:3 commons option
ab=10:4 commons option
Time base/WDT clock
Output: 1Hz
The WDT time-out flag after: 4s
Time base/WDT clock
Output: 2Hz
Function
Last update: 2008-06-03 04:36
SS1621
Def.
Yes
Yes
Yes
Yes
Yes