Z86L02 datasheet(23/37 Pages) ZILOG

23 / 37 page

Z86C02/E02/L02

Zilog

Cost Effective, 512-Byte ROM CMOS Z8® Microcontrollers

DS96DZ80301

P R E L I M I N A R Y

Clock. The Z8 on-chip oscillator has a high-gain, parallel-

resonant amplifier for connection to a crystal, ceramic res-

onator, or any suitable external clock source (XTAL1 = IN-

PUT, XTAL2 = OUTPUT). The crystal should be AT cut,

8 MHz max, with a series resistance (RS) of less than or

equal to 100 Ohms.

The crystal or ceramic resonator should be connected

across XTAL1 and XTAL2 using the vendors crystal or ce-

ramic resonator recommended capacitors from each pin

directly to device ground pin 14 (Figure 17). Note that the

crystal capacitor loads should be connected to VSS, Pin 14

to reduce Ground noise injection.

Figure 16. Interrupt Block Diagram

IRQ0 - IRQ5

IRQ

IMR

IPR

Priority

Logic

Global

Interrupt

Enable

Vector Select

Interrupt

Request

Figure 17. Oscillator Conﬁguration

XTAL1

XTAL2

Ceramic

Resonator

or Crystal

External Clock

LC Clock

XTAL1

XTAL2

XTAL1

XTAL2

=Device Ground Pin

XTAL1

XTAL2

RC Clock

Vss *

Z86L02 Datasheet(PDF) 23 Page - Zilog, Inc.

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