NJU3503L データシートの表示（PDF） - Japan Radio Corporation

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NJU3503L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3503

• INITIAL VALUE REGISTER1 / TIMER COUNTER1 {PHY4;(Y'=4, Peripheral register table 0)}

• INITIAL VALUE REGISTER2 / TIMER COUNTER2 {PHY6;(Y'=6, Peripheral register table 0)}

The Initial Value Register consisted of a 8-bit register sets the initial value to the counter, or gets the counted

value from the counter.

[ Writing to the Initial Value Register1 or 2 ]

When a data in RAM or Accumulator is transferred to the Initial Value Register, the data is loaded

into the higher 4-bit(b7 to b4 ) or lower4-bit(b3 to b0) of the Initial Value Register in accordance with

the condition of LSB of Y-register.

YLSB=1

(MSB) 3 2 1 0 (LSB)

(MSB) 7 6 5 4 3 2 1 0 (LSB)

M(X,Y)

or

AC

PHY4 or PHY6

YLSB=0

Initial Value

Register 1 or 2

[ Reading from the Timer Counter1 or 2 ]

When a current data in the Timer Counter1 or Timer Counter2 is transferred into RAM or

Accumulator, the data is gotten from higher 4-bit(b7 to b4) or lower 4-bit(b3 to b0) of the Timer

Counter1 or Timer Counter2 in accordance with the condition of LSB of Y-register.

YLSB=1

(MSB) 3 2 1 0 (LSB)

M(X,Y)

or

AC

PHY4 or PHY6

YLSB=0

7 6 5 4 3 2 1 0 (LSB)

Timer counter

1or 2

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