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PDF SNL320 Data sheet ( Hoja de datos )
| Número de pieza | SNL320 | |
| Descripción | 16-Bit LCD Controller | |
| Fabricantes | SONiX | |
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SNL320
16-Bit LCD Controller
======== CONTENTS ========
1. INTRODUCTION.........................................................................................................................5
2. FEATURES ...................................................................................................................................5
3. PIN ASSIGNMENTS....................................................................................................................5
4. MEMORY .....................................................................................................................................6
4.1 INTERNAL ROM..........................................................................................................................6
4.2 INTERNAL RAM..........................................................................................................................6
5. CLOCK SYSTEM ........................................................................................................................7
5.1 NORMAL MODE...........................................................................................................................8
5.2 LOW-SPEED MODE.......................................................................................................................8
5.3 STOP MODE.................................................................................................................................8
5.4 SUSPEND MODE ..........................................................................................................................8
5.5 WATCH MODE ............................................................................................................................9
6. POWER ON RESET ....................................................................................................................9
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7. I/O PORT.......................................................................................................................................9
8. TIMER/COUNTER ....................................................................................................................10
9. DA & PUSH-PULL.....................................................................................................................11
9.1 DAC .........................................................................................................................................11
9.2 PUSH-PULL ...............................................................................................................................11
10. INTERNAL REGULATOR ..................................................................................................12
11. LOW VOLTAGE DETECTOR............................................................................................13
12. EXTENSION BUS .................................................................................................................13
12.1 WORD MODE CONNECTION ......................................................................................................14
12.2 BYTE MODE CONNECTION ........................................................................................................14
12.3 MAXIMUM MEMORY EXPEND ...................................................................................................17
12.4 NAND FLASH INTERFACE ........................................................................................................17
13. USB INTERFACE .................................................................................................................18
14. LCD INTERFACE.................................................................................................................18
Ver: 1.4
1 April 18, 2006
1 page  
SNL320
16-Bit LCD Controller
1. INTRODUCTION
The SNL320 is a high performance 16-bit DSP base processor with 16MIPS CPU power. The
internal 64K words hi-speed ROM already built-in a hi-performance software voice synthesizer
to provides lot of voice effects. Such as hi-decompression engine to support from 1.5kbps ~
29kbps compression rate for speech and music, multi-channel voice synthesizer to provides
8-channel wave-table melody, or support foreground 1.5kbps~29kbps and background
4-channel wave-table melody.
The standard microprocessor interface allows SNL320 to extend its memory capability, or
connect external device. We also built-in a Low Voltage Detector circuit for power
management and a USB 1.1 interface for communication with PC.
2. FEATURES
♦ Power supply:
♦ RAM size: 9k*16 bits (including LCD RAM)
2.4V ~ 3.6V (for 2 batteries application)
− 5K*16 SRAM size for general purpose
3.6V ~ 5.1V (for 3 batteries application)
− 4K*16 for LCD display buffer
♦ Built-in regulator for DSP core
♦ Three 8-bit timers with auto-reload function
♦ Built-in 16-bit DSP core
♦ Programmable watchdog timer
♦ Software-based voice/melody processing
♦ LCD control interface
♦ Rich Function Instruction Set
− Support 1-bit/4-bit LCD data bus for
♦ 16 MIPS CPU performances under 16MHz
external LCD driver
♦ Clock system
− Share LCD display RAM with internal
− 16MHz crystal or R-C type oscillator
SRAM, support 240x120 LCD display
for hi-speed system clock
screen
− 32768HZ crystal oscillator for RTC
− H/W support maximum 4 gray-level
and low-speed system clock
LCD display
♦ Extension bus
♦ Built-in 32768 crystal for Real Time Clock
− Standard Byte-mode and Word-Mode ♦ Two voice/melody channels or 4 channels
bus interface
wave-table melody
− 4 chip select pins for external devices ♦ Built in Push-Pull direct drive circuit and
(such as ROM, Flash, SRAM..etc)
fixed current D/A output
− Maximum 128M-bit addressing
♦ Sampling Rate: 4KHz ~16KHz
capability for signal external memory
♦ Built-in software voice synthesizer for
device
multiple bit-rate solution
♦ I/O Ports: 36 I/O pins (P1.0~P1.15,
♦ USB 1.1 interface provided
P3.0~P3.15, P4.0~P4.3)
♦ Low Voltage Detector
♦ ROM size: 64K*16 bits
♦ Low Voltage Reset
♦ 9 Interrupt Sources
− 5 internal interrupt (T0, T1, T2, RTC and USB)
− 3 external interrupt (P3.0~P3.2)
− 1 DA/Push-Pull output
Ver: 1.4
5 April 18, 2006
5 Page 
I/O
PAD
Pull-Up
Select
Pull-Up
Resister
In/Out
Control
SNL320
16-Bit LCD Controller
Data Latch
to internal bus
In/Out
Control
I/O Configuration of Port1, Port3 and Port4
Figure-2
In some applications (e.g., Infra Red, IR), an output port needs to be modulated a carry
signal. In the cases, the routine of modulation will occupy too many CPU computations.
Thus, a modulation circuit is built in chip to reduce CPU’s loading.
IREN
P3.2
overflow
Timer2
Figure-3
I/O Pad
The modulation function will be active when the control bit “IREN” set to “1”. And
setting timer2 can generate the frequency of carry signal.
8. TIMER/COUNTER
SNL320 provides three 8-bit timer/event counters (T0/T1/T2). Each timer is 8-bit
binary up-count timer with pre-scalar and auto-reload function. Timer 0 (T0) was
used when voice playing, so user should avoid to use T0.
Ver: 1.2
10
July 22, 2005
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet SNL320.PDF ] | |
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