SNL320 View Datasheet(PDF) - Sonix Technology Co., Ltd
Part Name
Description
Manufacturer
SNL320 Datasheet PDF : 27 Pages
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Free for User
No Used
Reserved for System
& User
LCD Display Buffer
SNL320
16-Bit LCD Controller
1KW
4KW
LCD buffer start pointer
4KW
5. Clock System
SNL320 is a dual clock system that it both provides high-speed clock (16MHZ) and
low-speed clock (32768HZ). There two different way to get the hi-speed clock, one is
generate by external 16MHZ crystal and another way is through external 6MHZ
pumping to 16MHZ by the internal PLL circuit.
The pin option “PLLEn” is used to enable/disable internal PLL circuit.
PLLEn
LCD driver clock source
XIN
XOUT
6MHZ
Rosc/
X'tal
CAP
16MHZ
PLL
low-speed clock
system clock
PCR.MCS
PCR.STPMD
RTC
/512 clock cource
PCR.RTCCKS
Figure-1 Clock system block diagram
Ver: 1.2
7
July 22, 2005
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