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PDF STK55C324 Data sheet ( Hoja de datos )
| Número de pieza | STK55C324 | |
| Descripción | LCD Controller | |
| Fabricantes | ETC | |
| Logotipo |  |
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Syntek Semiconductor Co., Ltd. STK55C324
1. FEATURES :
Specification
* Operating voltage : 2.5V – 5.5 V.
* Maximum CPU operating frequency : 2MHz at 2.7V
* Dual oscillators :
- RC or 32.768 KHz crystal oscillator for LCD display and watch timer.
- RC oscillator for system clock.
* 40 segments and 8 commons output for LCD driver.
- 1/4 bias, 1/8 duty and 64Hz frame frequency.
- 16 levels contrast control.
* I/O port.
- 8 I/O pins with selectable wake up interrupt.
- Two output pins. These two pins can be set as sound channel DAC outputs.
* Built in 160 bytes data RAM and 40 bytes display RAM.
* Built in 32K bytes ROM for program.
* One 8-bit timer with 8 predefined input clock.
* Two sound generators with 7-bit D/A output.
* Four interrupt sources :
NMI - 64 Hz interrupt
IRQ1 - Fix-time timer interrupt
IRQ2 - Timer interrupt
IRQ3 - External interrupt
* Code option :
- Built-in 150K OHM pull-up resistors for I/O port.
- RC or 32768Hz crystal oscillation for LCD driver.
2. APPLICATION :
* Calculator
* Hand-held game
* Small instrument
* Toy
LCD Controller 1 /24 Issue date: 13 August, 1999
1 page  
Syntek Semiconductor Co., Ltd. STK55C324
4 : = 0 CPU clock is system clock.
= 1 CPU clock is 32.768K Hz.
7-5 : Reserved.
The default values for each bit is zero.
1003 IRQ flag register. Read & write.
Read function :
Bit 0 : = 1 Fix-time timer interrupt, IRQ1.
1 : = 1 Timer interrupt, IRQ2.
2 : = 1 External interrupt, IRQ3.
Write function :
Bit 0 : = 0 Clear fix-time timer interrupt.
1 : = 0 Clear timer interrupt.
2 : = 0 Clear external interrupt.
* Before firmware exits the interrupt routine, the interrupt flag must be cleared. Otherwise, the IC will
get into interrupt again.
* Write 0 to clear the corresponding IRQ but do not use ‘STZ $1003’ to clear all interrupts at the
same time. Following instructions are recommended
LDA $1003
STA IRQBuff
EOR #0FFH
STA $1003
;Clear all active interrupts at the same time
LDA IRQBuff
AND #1
BEQ next_irq
* Do NOT use TRB to test and clear this register. Following instructions are recommended.
LDA $1003
AND #1
;Check IRQ 1
BEQ next_irq
STA $1003
;Clear the active interrupt.
1004 Port 1 data. Read & write.
1005 Set port 1 bit function. Write only.
* An '1' in this register will set the corresponding pin of port 1 as an output pin.
* The default values for each bit is zero. A pull-up resistor can be added to the pin by code option.
LCD Controller 5 /24 Issue date: 13 August, 1999
5 Page 
Syntek Semiconductor Co., Ltd. STK55C324
c. Set the volume according to the voice data ($1008 or $1009).
7. ABSOLUTE MAXIMUM RATINGS
Operating temperature ........................................................................ 0 to 70
Storage temperature ...................................................................... -65 to 150
Supply voltage ............................................................................................... 7 V
Input voltage ........................................................................... -0.6 to Vdd+0.6 V
LCD Controller
11 /24
Issue date: 13 August, 1999
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet STK55C324.PDF ] | |
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