SC9308 View Datasheet(PDF) - Silan Microelectronics
Part Name
Description
Manufacturer
SC9308 Datasheet PDF : 16 Pages
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SC9308
Module
Pull-up
Configuration
SEG Diplex Port
SEG Diplex Control
68－69H Unused
LCD Interface
Control
Register
PUA
I/O Address
Function descriptions
W/R
60H I/O port pull-up mode selection register
PUB
W/R
61H I/O port pull-up mode selection register
PORTE
W/R
68H Data temporary storage register of port E
PORTF
W/R
69H Data temporary storage register of port F
Refer to LCD module description for details.
SEG_CTRL0
W
6BH SEG0~3 pin configuration register
SEG_CTRL1
W
6CH SEG4~7 pin configuration register
SEG_CTRL2
W
6DH SEG8~11 pin configuration register
SEG_CTRL3
W
6EH SEG12~13 pin configuration register
LCDCON
LCDPWR
Display RAM
LCDREG0
LCDREG1
LCDREG2
LCDREG3
LCDREG4
LCDREG5
LCDREG6
LCDREG7
W
67H LCD control register
W/R
66H LCD control register
W/R
72H LCD display register 0
W/R
73H LCD display register 1
W/R
74H LCD display register 2
W/R
75H LCD display register 3
W/R
76H LCD display register 4
W/R
77H LCD display register 5
W/R
78H LCD display register 6
W/R
79H LCD display register 7
Interrupt control
SC65X supports two kinds of interrupts: Non-maskable interrupt NMI; maskable interrupt IRQ. Where PRI of non-
maskable interrupt NMI is higher than maskable interrupt IRQ. However, this circuit does not implement NMI
interrupt.
1. Maskable interrupts
SC9308 has 11 maskable interrupts in total without PRI; Setting IRQIP register to determine if the interrupt is
enable. All the maskable interrupts use the same entry address FFF8H.
2. Non-maskable interrupts(reserved)
Non-maskable interrupt NMI, active high. Entry address is FFFCH/FFFDH. This circuit does not implement
NMI function. There is no need to set NMIIP and NMIDP registers.
3. External interrupts
SC9308 has 4 IO input interrupts ExtInt0～3, input by PA0～3 pins; one is used for scan interrupt KSINT,
shares one interrupt source with ExtInt2, corresponding to IRQDP.6. ExtInt3 and IF interrupt IRQIFC share one
interrupt source, corresponding to IRQDP.7. In addition, RTC and Timer2 share one interrupt source.
Watchdog Timer
Watchdog timer adopts independent counter. Watchdog (WDT) is mainly used for program monitor, after counting
overflows, generates reset signal to avoid endless loop or other error execution state. When 75K crystal oscillator
is operating, the longest overflow time is 873.6ms.
HANGZHOU MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1 2008.10.20
Page 9 of 17
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