A8032L-40 データシートの表示（PDF） - AMIC Technology

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A8032L-40

8 Bit Microcontroller

AMIC Technology 

A8032 Series

Functional Description

The A8032 is a high speed 8-bit microcontroller. The architecture consists of a core controller, four general purposes I/O

ports, 256 bytes RAM internal register and a serial port.

This microcontroller supports 111 opcodes and executes instructions in a 6-clock bus cycle. It can reference both a 64K

program address space and a 64K data storage space.

Timer/Counter 0, 1 and 2

Timer 0,1 and 2 each consist of two 8-bit data registers.

These are called TL0 and TH0 for Timer 0. TL1 and TH1

for Timer 1, and TL2 and TH2 for Timer 2. The TMOD

and TCON registers support control function for Timer 0

and Timer 1. The T2CON register provides control

function for Timer 2. When operating reload/capture

mode, RCAP2H and RCAP2L will be used.

N/C

EXTERNAL

OSCILLATOR

SIGNAL

XTAL 2

XTAL 1

VSS

Interrupt

The A8032 provides 6 interrupt modes. These consist of

2 external interrupts, 3 internal interrupts and a serial

port interrupt.

The enable/disable interrupt is controlled by IE register in

SFR.

The priority of interrupts is controlled by IP register in

SFR.

Serial Port Transfer

The A8032 provides a full duplex serial transfer function.

This function is controlled by SCON register in SFR.

And the data is storaged in SBUF register during

transmitting and receiving.

Figure 2. External Clock Drive configuration

RESET

The external reset signal must be held high for at least

two machine cycles during the oscillator running.

After reset, the ports are held high, SP register to 07H,

all of the other SFR registers except SBUF to 00H, and

SBUF is not reset.

Oscillator Characteristics

The oscillator connections are shown as Figure 1. And

Figure 2. When quartz crystal is used, C1 and C2 are

30pF shown in Figure 1. When external clock is used,

the internal clock will be gotten through a divide-by-two

flip-flop. When starting up, the input loading for XTAL1

pin is 100pF. This is due to interaction between the

amplifier and its feedback capacitance interaction. After

the external signal meets the VIL and VIH specification

the capacitance will not exceed 20pF.

C2

XTAL 2

C1

XTAL 1

VSS

C1,C2 = 30pF ± 10pF for Crystals

Figure 1. Oscillator Connections

PRELIMINARY (November, 1998, Version 0.0)

4

AMIC Technology, Inc.

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