SS1621B-48LQFP Shenzhen SI Semiconductors Co., LTD., SS1621B-48LQFP Datasheet - Page 6

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

A.C. Characteristics
Sym.
f
f
f
f
f
f
t
f
t
TONE
CLK1
CLK2
t
COM
t
SYS1
SYS2
SYS3
t
CLK
LCD
t
t
r,
su1
CS
t
su
h1
h
t
f
System Clock
System Clock
System Clock
LCD Clock
LCD Common Period
Serial Data Clock ( WR Pin)
Serial Data Clock ( RD Pin)
Tone Frequency
Serial Interface Reset Pulse Width
WR , RD Input Pulse Width
Rise/Fall Time Serial Data Clock
Width
Setup Time for DATA to WR , RD
Clock Width
Hold Time for DATA to WR , RD
Clock Width
Setup Time for CS to WR , RD
Clock Width
Hold Time for CS to WR , RD
Clock Width
Parameter
(Figure 3)
(Figure 1)
(Figure 1)
(Figure 2)
(Figure 2)
(Figure 3)
(Figure 3)
V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
—
DD
On-chip RC oscillator
Crystal oscillator
External clock source
On-chip RC oscillator
Crystal oscillator
External clock source
n: Number of COM
Duty cycle 50%
Duty cycle 50%
On-chip RC oscillator
CS
Write mode
Read mode
Write mode
Read mode
Test Conditions
Conditions
—
—
—
—
—
p. 6
Min.
3.34
6.67
1.67
3.34
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
F
F
F
2.0 or 4.0
SYS1
SYS3
32.768
32.768
SYS2
n/f
Typ.
256
256
256
256
250
120
120
120
100
100
—
—
—
—
Last update: 2008-06-03 04:36
/1024
/1024
LCD
/128
Max.
150
300
150
—
—
—
—
—
—
—
—
—
—
75
—
—
—
—
—
—
—
—
—
—
—
SS1621
Unit
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
Hz
Hz
Hz
ns
μs
μs
ns
ns
ns
ns
ns
s