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  

NJU3502

• INITIAL VALUE REGISTER / TIMER COUNTER {PHY4;(Y'=4)}

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

counted value from the Timer.

[Writing to Initial Value Register]

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 lower(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

Initial value

register

YLSB=0

PHY4

[Reading from Timer Counter]

When a current data in the Timer Counter is transferred into RAM or Accumulator, the data is

gotten from higher 4-bit(b7 to b4) or lower(b3 to b0) of the Timer Counter 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

Timer

counter

YLSB=0

PHY4

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