SC73C1602QD-XXXG Ver la hoja de datos (PDF) - Silan Microelectronics

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SC73C1602QD-XXXG

4-BIT MCU FOR REMOTE CONTROLLER(MASK TYPE)

Silan Microelectronics 

oscillator will stop. This causes system to malfunction. In this condition, the system will initiate the

LVD circuit to generate an internal reset signal to remove the malfunction.

19.Instruction Cycle

Instructions and internal operations are executed in synchronization with the main clock. The minimum unit of

instruction is called the instruction cycle. SC73C1602 has 1 and 2-cycle OP Code instructions.

An instruction cycle consists of 5 states (STCLK1 –STCLK5). Each state consists of 1 main clock. Therefore, the

instruction cycle time is 5/fmain [s].

20.The Carrier

1. fcarry is the output carrier frequency. Fin is the input frequency of the carrier generator (a register

concerned with the settings of the carrier). It is also the oscillation frequency of the IC.

2. fcarry = Fin / ( CH+CL+2 ). For example, 38.10(105) at Fin =4000KHz, 38.10 mean the carrier

frequency that can be achieved under certain conditions, If CH + CL + 2 = 105, the generated carrier

frequency is 38.10KHz.

3. CH: the register that determines the duration of the high level carrier, the duration of the high level

carrier is: (CH + 1 ) / Fin .

4. CL: the register that determines the duration of the low level carrier, the duration of the low level carrier

is : ( CL + 1 ) / Fin .

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

Http: www.silan.com.cn

REV:2.5 2009.07.20

Page 11 of 23

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