NJU3502L データシートの表示（PDF） - Japan Radio Corporation

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NJU3502L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

[ CIRCUIT TYPE TABLE 2 ]

SYMBOL

Input / Output

Terminal*1

TERMINAL TYPES

EXTRA FUNCTION

NJU3502

REMARKS

PD0

IB OB

Restart signal input

ID

PD1

IB OB

ID

Edge detection

P Rise edge detection

N Fall edge detection

EXTI / PE0

IB

*2 ID

EX External interrupt input

(EXTI)

SDO / PF0

OB

SO Serial data output

MSB MSB first

SDI(O) / PF1 IA OB

SD Serial data input/output

LSB LSB first

*2 IC

SCK / CKOUT

SK Serial clock input/output

*2 *3

CKOUT Output clock divide

by prescaler

Note) The symbol in the above table is the same as in mask option generator software.

*1) The symbol and the detail circuits of INPUT OUTPUT TERMINAL are written in INPUT OUTPUT

TERMINAL TYPE.

*2) The pull-up resistance is added to the terminal selected as the extra function.

*3) When Serial INPUT-OUTPUT is selected, “SK” is selected automatically. When it is not selected,

“CKOUT” is selected automatically.

2) PD1 terminal is added the “Edge detect function” by the mask option.

Rising edge

Falling edge

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

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

4) Dividing ration of the internal clock

Each dividing ration of the count clocks of Timer, the Internal shift clock of the Serial Interface and the

output clock through the SCK/CKOUT terminal is selected among the following by the mask option.

The frequency of each clock is determined by the dividing ration and the 1-instruction term (1/fOSCx6).

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) As the shift clock of the serial interface, the external clock or the internal is selected by the program.

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