SC73C1602ME-XXXGTR Ver la hoja de datos (PDF) - Silan Microelectronics

Número de pieza

componentes Descripción

Fabricante

SC73C1602ME-XXXGTR

4-BIT MCU FOR REMOTE CONTROLLER(MASK TYPE)

Silan Microelectronics 

……

LD

L,#TEMP

LD

@LL,#1110B

LOOP:

LD

A,TM

XOR

A,@LL

JMPS

LOOP

END

In above program, the time from TMRST start to END is 4.5ms, that it from TM=1111B to 1110B is 4.5ms..

Time change :

4.5ms 9ms

9ms 9ms

18ms 18ms

36ms

36ms

The maximum adjustable time of the timer is 216/fmain. When the timer acts as a WDT and the timer is activated,

it must execute the TMRST instruction and clear the timer in 216/fmain’s time, otherwise, it will lead the WDT to

overflow, and causes the MCU to reset.

18. LVD Circuit

The LVD circuit monitors the power supply voltage and applies an internal reset to the micro-controller.

The LVD circuit has the following functions:

•Generates an internal reset signal when VDD” VLVD˄note 1˅.

•Cancels an internal reset signal when VDD > VLVD.

Where, VDD: power supply voltage. VLVD: LVD detection voltage.

Notes. 1. Actually, there is a short oscillation stabilization wait time before the circuit is in operation mode.

The oscillation stabilization wait time is about 216/fmain.

2. The LVD circuit generates an internal reset signal when the power supply voltage has fallen. When

the circuit is sending code, it will cause a large current. When using old batteries (high resistor),

battery output voltage will drop. When the output voltage is lower than a reference value, the

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

Http: www.silan.com.cn

REV:2.5 2009.07.20

Page 10 of 23

Share Link: