TC9328AF datasheet(24/84 Pages) TOSHIBA

24 / 84 page

TC9328AF

2004-09-13

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I/O map

All of the ports within the device are expressed with a matrix of six I/O instructions (OUT 1 to 3

instructions and IN 1 to 3 instructions) and a 4-bit code number.

The allocation of these ports is shown on the following page in the form of an I/O map. The ports used in

the execution of the various I/O instructions on the horizontal axis of the I/O map are allocated to the port

code numbers indicated on the vertical axis. The G-register, data register, DAL address register and DAL

bits are also used as ports.

The OUT1 to 3 instructions are specified as output ports and the IN 1 to 3 instructions are specified as

input ports.

Note: The ports indicated by the angled lines on the I/O map do not actually exist within the device.

The contents of other ports and data memories are not affected when data is output to a non-existent

output port with the execution of the output instruction. The data loaded from data memories is unfixed

when a non-existent input port has been specified with the execution of an input instruction.

Note: The output ports marked with an asterisk (*) on the I/O map are not used. Data output to these ports

assume the don’t care’s status.

Note: The Y1 contents of the ports expressed in 4 bits correspond to the data memory data’s low order bit and

the Y8 contents correspond to the high order bits.

The ports specified with the six I/O instructions and code No. C are coded in the following manner:

(Example) The setting for the G-register is allocated to code “D” and “E” in the OUT1 instruction.

The encoded expression at this time becomes “φL1D”and “φL1E”.

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Crystal Oscillation Circuit

75 kHz crystal oscillator is connected to the device’s crystal oscillator pin (XIN, XOUT) as indicated below.

Usually, the oscillation signal is supplied to the clock generator, the reference frequency divider and other

elements, and generates the various CPU timing signals and reference frequency.

Note: It is necessary to use a crystal oscillator with a low CI value and favorable start-up characteristics.

Please adjust and determine external resistance and the constant of a capacitor as the actually used

crystal oscillator.

φ [K/L] m n (o)

Contents of the selection port (indirectly specified data, 0-F [HEX])

I/O instruction’s operand CN (0~F [HEX])

The six I/O instructions are coded with the digits 1 to 3

I/O Instruction

OUT1

OUT2

OUT3

IN1

IN2

IN3

Indicates the input/output port

K: Input port (IN1~IN3 instruction)

L: Output port (OUT1~OUT3 instruction)

(GND)

(XIN)

(XOUT)

X’tal

= 75 kHz

TC9328AF Datasheet(PDF) 24 Page - Toshiba Semiconductor

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