STC12LE5616AD datasheet(197/377 Pages) STC

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2. SBUF: Serial port 1 Data Buffer register (Non bit-addressable)

SFR name

Address

bit

SBUF

99H

name

It is used as the buffer register in transmission and reception.The serial port buffer register (SBUF) is really two

buffers. Writing to SBUF loads data to be transmitted, and reading SBUF accesses received data. These are two

separate and distinct registers, the transimit write-only register, and the receive read-only register.

3. AUXR: Auxiliary register (Non bit-addressable)

SFR name Address

bit

AUXR

8EH

name T0x12 T1x12 UART_M0x6 EADCI

ESPI

ELVDI

T0x12 : Timer 0 clock source bit.

0 : The clock source of Timer 0 is SYSclk/12. It will compatible to the traditional 80C51 MCU

1 : The clock source of Timer 0 is SYSclk/1. It will drive the T0 faster than a traditional 80C51 MCU

T1x12 : Timer 1 clock source bit.

0 : The clock source of Timer 1 is SYSclk/12. It will compatible to the traditional 80C51 MCU

1 : The clock source of Timer 1 is SYSclk/1. It will drive the T0 faster than a traditional 80C51 MCU

UART_M0x6 : Baud rate select bit of UART1 while it is working under Mode-0

0 : The baud-rate of UART in mode 0 is SYSclk/12.

1 : The baud-rate of UART in mode 0 is SYSclk/2.

EADCI : Enable/Disable interrupt from A/D converter

0 : (default) Inhibit the ADC functional block to generate interrupt to the MCU

1 : Enable the ADC functional block to generate interrupt to the MCU

ESPI : Enable/Disable interrupt from Serial Peripheral Interface (SPI)

0 : (default)Inhibit the SPI functional block to generate interrupt to the MCU

1 : Enable the SPI functional block to generate interrupt to the MCU

ELVDI : Enable/Disable interrupt from low-voltage sensor

0 : (default)Inhibit the low-voltage sensor functional block to generate interrupt to the MCU

1 : Enable the low-voltage sensor functional block to generate interrupt to the MCU

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