STC12LE5616AD datasheet(35/377 Pages) STC

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2.1.4 Programmable Clock Output

STC12C5620AD series MCU have two channel programmable clock outputs, they are Timer 0 programmable

clock output CLKOUT0(P1.0) and Timer 1 programmable clock output CLKOUT1(P1.1).

There are some SFRs about programmable clock output as shown below.

The satement (used in C language) of Special function registers AUXR/WAKE_CLKO:

sfr

AUXR

= 0x8E;

//The address statement of Special function register AUXR

sfr

WAKE_CLKO = 0x8F;

//The address statement of SFR WAKE_CLKO

The satement (used in Assembly language) of Special function registers AUXR/WAKE_CLKO:

AUXR

EQU

0x8E

;The address statement of Special function register AUXR

WAKE_CLKO EQU

0x8F

;The address statement of SFR WAKE_CLKO

Symbol

Description

Address

Bit Address and Symbol

MSB

LSB

Value after

Power-on or

Reset

AUXR

Auxiliary register

8EH

T0x12 T1x12 UART_M0x6 EADCI

ESPI

ELVDI

0000 00xxB

WAKE_CLKO

CLK_Output

Power down

Wake-up control

8FH

PCAWAKEUP RXD_PIN_IE T1_PIN_IE T0_PIN_IE

T1CLKO T0CLKO

0000 xx00B

1. 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.

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

STC12LE5616AD Datasheet(PDF) 35 Page - STCmicro Technology Co,.Ltd

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