SNL310

16-Bit LCD Controller

9. UART INTERFACE

The built-in UART supports the serial data transmission. SNL310 provides data

phase auto-clock calibration function. The RxD pin and TxD pin are shared with P3.0

& P3.1, and user can switch P3.0 and P3.1 to be RxD and TxD by configuring the

RxD/TxD enable bit of UARTC register. User can configure the baud rate of UART

from 1200bps to 115200bps just by using the single crystal system (16MHZ crystal).

All the clock base of baud rate is counting by Timer2.

10. LCD DRIVER INTERFACE

10.1 8-Bit Interface

The extension bus of SNL310 supports not only external memory device but also 8-bit

8080/6800 microprocessor interface for external LCD controller which already built-in

LCD display RAM. User should enable extension bus before driving external LCD

driver, and define the chip select pin you used to connect to LCD driver in EBC

register.

In 8-bit interface LCD controller, LCD display data is stored in LCD driver. Any change

of LCD display is sent out to external LCD driver’s RAM by addressing different SRAM

space. The interface emulates the 8080/6800-series interface to speed up the

interface data moving processing.

Figure-11 and Figure-12 are the timing diagrams between SNL310 and LCD driver by using

8-bit 8080/6800 interface.

Ver: 1.7

May 2, 2003

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