STC12LE5624 datasheet(36/377 Pages) STC

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T1_PIN_IE :

When set and the associated-Timer1 interrupt control registers is configured correctly, the T1 pin

(P3.5) is enabled to wake up MCU from power-down state.

T0_PIN_IE :

When set and the associated-Timer0 interrupt control registers is configured correctly, the T1 pin

(P3.4) is enabled to wake up MCU from power-down state.

T1CKLO :

When set, P1.1 is enabled to be the clock output of Timer 1. The clock rate is Timer 1overflow rate

divided by 2.

T0CKLO :

When set, P1.0 is enabled to be the clock output of Timer 0. The clock rate is Timer 0overflow rate

divided by 2.

2.1.4.1 Timer 0 Programmable Clock-out on P1.0

Timer/Counter 0 Mode 2: 8-Bit Auto-Reload

SYSclk

control

C/T=0

C/T=1

T0 Pin

TR0

GATE

INT0

AUXR.7/T0x12=0

AUXR.7/T0x12=1

TL0

(8 Bits)

TH0

(8 Bits)

÷12

÷1

Interrupt

TF0

Toggle

T0CLKO

P1.0

CLKOUT0

STC12C5620AD is able to generate a programmable clock output on P1.0. When T0CLKO/

WAKE_CLKO.0 bit in WAKE_CLKO SFR is set, T0 timer overflow pulse will toggle P1.0 latch to

generate a 50% duty clock. The frequency of clock-out = T0 overflow rate/2.

If C/T(TMOD.2) = 0, Timer/Counter 0 is set for Timer operation (input from internal system clock), the

Frequency of clock-out is as following :

(SYSclk) / (256 – TH0) / 2,

when AUXR.7 / T0x12=1

(SYSclk / 12) / (256 – TH0) / 2 ,

when AUXR.7 / T0x12=0

If C/T (TMOD.2) = 1, Timer/Counter 0 is set for Conter operation (input from external P3.4/T0 pin), the

Frequency of clock-out is as following :

T0_Pin_CLK / (256-TH0) / 2

2. WAKE_CLKO: CLK_Output Power down Wake-up control register (Non bit-Addressable)

SFR name Address bit

WAKE_CLKO

8FH

name PCAWAKEUP RXD_PIN_IE T1_PIN_IE T0_PIN_IE

T1CLKO T0CLKO

PCAWAKEUP: When set and the associated-PCA interrupt control registers is configured correctly, the CEXn pin

of PCA function is enabled to wake up MCU from power-down state.

RXD_PIN_IE: When set and the associated-UART interrupt control registers is configured correctly, the RXD

pin (P3.0) is enabled to wake up MCU from power-down state.

STC12LE5624 Datasheet(PDF) 36 Page - STCmicro Technology Co,.Ltd

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