NJU3505L 查看數據表（PDF） - Japan Radio Corporation

零件编号

产品描述 (功能)

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NJU3505L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3505

2) Restart signal Input Selection

PH0 terminal performs the extra function as the restart signal input terminal to return from the "STANDBY"

mode. When the rising edge of the signal from the external circuit is input into the PH0 terminal in mode of

"STANDBY", the "STANDBY" mode is released and the CPU starts the execution again from the suspended

address of the program.

3)Edge Detector Selection

PH1 terminal performs the extra function as the edge detector terminal. When the PH1 terminal detects the

edge of the signal from the external circuit, the third bit(b2) condition of PHY24 is set to "1". The “b2” of

PHY24 is set to “1” even when the edge is input during the “STANDBY” mode. The condition of “b2” is kept

until the writing operation to PHY24.

The polarity as low to high or high to low of the input signal edge can be selected by the mask option.

Rising edge

Falling edge

4)External Interrupt of the edge Selection

When PK0 terminal operates as EXTI Input terminal for the external interrupt, the polarity of the edge, rising

as “low to high” or falling as “high to low”, is selected by the mask option.

Rising edge

Falling edge

5)The data order(MSB, LSB) of the Serial Interface

The data order of the Serial Interface can select either MSB or LSB first by the mask option.

6)A/D Control Clock

A/D Control Clock can select either the external clock from ADCK terminal or the internal clock from the

Prescaler by the mask option.

7)Each Internal Clock

The count clocks of Timer1 and Timer2, the Internal shift clock of the Serial Interface, the clock of the A/D

control clock and the output clock through the SCK/CKOUT terminal are clocks divided in the internal prescaler,

and the frequency of this clock can be selected by the mask option from follows which are dividing numbers

based on the inverse of the 1-instruction executing period (1/fOSC × 6).

1/2, 1/4, 1/8, 1/16, 1/32,1/64, 1/128, 1/256, 1/512, 1/1024, 1/2048,1/4096

Note) Count clock of Timer2 can select the internal or external clock by the program.

The shift clock of the serial interface can select the internal or external clock by the program.

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