ZiLOG Z86319 PROCUREMENT SPECIFICATION

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FEATURES

ROM

Device

Z86319 2 125 13 4.5V to 5.5V

Note: *General-Purpose (144K Total RAM)

C to + 40 ° C Operating Temperature Range

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Low-Power Consumption: 25 mW (Typical)

(KB)

RAM*

(Bytes)

I/O

Lines

Voltage

Range

P

RELIMINARY

P

RODUCT

S

PECIFICATION

Z86319

PS/2 M

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OUSE

P24-P27 Can Be Configured with a Voltage Divider
During Input Mode

On-Chip Oscillator (Tolerance = ± 10%)
Fast Instruction Pointer: 1.5 µ s @ 4 MHz
ESD Protection Circuitry
Hardwired Watch-Dog Timer (WDT)

ONTROLLER

C

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GENERAL DESCRIPTION

The Z86319 is a member of the Z8 family of CMOS micro­controllers architecture to be used in mouse applications.
These devices offer on-board pull-up and pull-down resis­tors, a trip-point buffer to accommodate opto-transistor
outputs, and high drive ports capable of up to 10 mA cur­rent sinking per pin (3 pins maximum).

A permanently enabled Watch-Dog Timer ensures opera­tional reliability across a broad range of mouse application
environments. The precision RC oscillator filters out high­frequency noise from the oscillator input pin. When config­ured as inputs, P24-P27 have built in voltage dividers (25K
pull-up /7.5K pull-down). The input levels are designed for
connection to the emitters of the opto-transistors and
switch at a voltage level of 0.4 V

DD

.

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Excellent System Level EMI/EFT/ESD

For applications requiring powerful I/O capabilities, the
Z86319 provides dedicated input and output lines that are
grouped into three ports. There are two basic address
spaces available to support this configuration: Program
Memory, and 125 bytes of general-purpose registers.

The Z86319 device provides two on-chip 8-bit programma­ble counter/timers with a large number of user-selectable
modes. Each counter/timer is driven by its own 6-bit pro­grammable prescaler. The Z86319 counter/timers off-load
system real-time tasks such as counting/timing and in­put/output data communications for increased system effi­ciency.

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P R E L I M I N A R Y

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Z86319
PS/2 Mouse Controller Zilog

GENERAL DESCRIPTION (Continued)

Input

Port 3

Counter/

Timers (2)

Interrupt

Control

VDD

ALU

FLAG

Register

Pointer

Register File

144 x 8-Bit

GND

AGND

RCIN

Machine

Timing & Inst.

Control

Prg. Memory

2048 x 8-Bit

Program

Counter

Port 2

I/O

(Bit Programmable)

Port 0

I/O

Figure 1. Z86319 Functional Block Diagram

WDT

P R E L I M I N A R Y

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Z86319

Zilog PS/2 Mouse Controller

PIN DESCRIPTIONS

P24
P25
P26
P27

VDD

RCIN

AGND

P31

GND

Figure 2. 18-Pin DIP/SOIC Pin Configuration

Table 1. 18-Pin DIP/SOIC Pin Identification

Pin # Symbol Function Direction

1-4 P24-P27 Port 2, Pins 4,5,6,7 In/Output
5V

6 RCIN RC Oscillator Input
7 AGND Analog Ground Ground
8 P31 Port 3, Pin 1 Input
9 GND Ground Input
10 P33 Port 3, Pin 3, Input
11-13 P00-P02 Port 0, Pins 0,1,2 In/Output
14 GND Ground Ground
15-18 P20-P23 Port 2, Pins 0,1,2,3 In/Output

DD

1

18 - Pin

DIP/SOIC

910

Power Supply Power

18

P23
P22
P21
P20
GND
P02
P01
P00
P33

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P R E L I M I N A R Y

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4

Z86319
PS/2 Mouse Controller Zilog

PIN FUNCTIONS

RCIN. A precision 1% resistor is connected to RCIN,

generating oscillation with an internal capacitor.
Resistor values and corresponding typical frequencies are

shown in Table 2 and graph chart (Figure 3).

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Table 2. Resistor Values and Corresponding

Typical Frequencies

External Resistor Average Frequency

14.0K 5.01 MHz

15.0K 4.70 MHz

16.0K 4.43 MHz

17.0K 4.19 MHz

18.0K 3.97 MHz

19.0K 3.78 MHz

20.0K 3.60 MHz

21.0K 3.44 MHz

22.0K 3.30 MHz

23.0K 3.16 MHz

4

3

2

FREQUENCY (MHz)

1

0

14 15 16 17 18 19 20 21 22 23

RESISTOR VALUE (K OHMS)

Figure 3. Z86319 RC Frequency in Function of the External Resistance

(typical numbers)

P R E L I M I N A R Y

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t
t

40 °

Z86319

Zilog PS/2 Mouse Controller

STANDARD TEST CONDITIONS

The characteristics listed below apply for standard test
conditions as noted. All voltages are referenced to
Ground. Positive current flows into the referenced pin
(Figure 4).

From Outpu

Under Tes

150 pFI

Figure 4. Test Load Diagram

ABSOLUTE MAXIMUM RATINGS

Sym Parameter Min Max Units

V
T

STG

T

A

Notes:

*Voltages on all pins with respect to Ground.

Supply V oltage* –0.3 +7 V

DD

Storage Temp –65 °
Oper Ambient

Temp

0 °

+150 °

C
C

Stresses greater than those listed under Absolute Maxi­mum Ratings may cause permanent damage to the device.
This rating is a stress rating only; operation of the device
at any condition above those indicated in the operational
sections of these specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods
may affect device reliability.

CAPACITANCE

T

= GND = 0V, f = 1.0 MHz, unmeasured pins returned to Ground.

A

Parameter Min Max

Input Capacitance 0 10 pF
Output Capacitance 0 20 pF
I/O Capacitance 0 25 pF

V

SPECIFICATION

CC

V

= 4.5V to 5.5V

CC

Using the precision RC oscillator feature, f = 4.0 MHz ± 10% under the following conditions:

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V

= 5.0V ± 10%

CC

Temp 0 to 40 ° C

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Application board capacitance:
– 2.0 pF max.

– 0.5 pF min.

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P R E L I M I N A R Y

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6

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Z86319
PS/2 Mouse Controller Zilog

DC ELECTRICAL CHARACTERISTICS

4.5V ≥ V

Sym Parameter Min Max Units Conditions

V

IH

V

IL

V

IL

V

OH

V

OL1

V

OL2

V

LV

V

TP

I

IL

I

OL

I

DD

I

DD1

I

PU

I

PD

I

PU

5.5V

DD

T

= 0 ° C to +40 ° C

A

Rising Input

2.3 3.2 V Note 1

Schmitt-Triggered
Falling Input

1.3 2.2 V Note 1

Schmitt-Triggered
Input Low Voltage CMOS Input V

Output High Voltage V

Output Low Voltage 0.4 V I

Output Low Voltage 0.8 V I

V

Low Voltage Protection 2.25 2.95 V @ 4 MHz Max, Note 2

CC

Trip Point Voltage
(P24-P27)

Input Leakage –1.0 1.0

– 0.4 V I

DD

= –2.0 mA;

OH

V

=4.5V

DD

= +4.0 mA;

OL

V

=5.5V

DD

= 10.0 mA,

OL

3 Pin Max; V

1.9 2.5 V P24-P27; V

1.5 2.1 V V
AV

=4.5V

DD

= 0V, or V

IN

DD

DD

=5.5V

CC

Note 4

Output Leakage –1.0 1.0 µAVIN = 0V, or V

CC

Note 4

Supply Current 4.5 mA @ 4 MHz, Note 3;

VDD=5.5V

Standby Current 2.2 mA @ 4 MHz, Note 3;

VDD=5.5V
Pull-Up Current (100K) –20 µAVIH @ 1V
P00-02, P31, P33 –95 µAVIH @ 1V
Pull-Down Current (100K) +20 µAVIL @ 3V
P00-02, P31, P33 +85 µAVIL @ 4V
Pull-Up Current (10K) –370 µAVIL = 0V
P20, P22 –670 µAVIL = 0V

=5.5V

µ

Notes:

1. The min. and max. values of the Schmitt-Trigger input voltages track each other over temperature, V
process variations.

2. The device is functional from V
voltage at ambient temperature. The VLV voltage increases as the temperature decreases.

3. All input pins are tied to GND and all output pins are floating.

down to VLV voltage. The minimum operational VDD is determined by the value of the V

DD

P R E L I M I N A R Y

DD

, and

LV

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Z86319

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Zilog PS/2 Mouse Controller

AC ELECTRICAL CHARACTERISTICS

Timing Diagrams

1 1

T

IN

IRQ

2

N

5

3

4

6

Figure 5. Electrical Timing Diagram

TA = 0°C to +40°C

No Symbol Parameter

V

DD

Min Max Units Notes

1 TrTin, TtTin Timer Input Rise and Fall Time 5.5V 100 ns 1
2 TwTinL Timer Input Low Width 5.5V 70 ns 1
3 TwTinH Timer Input High Width 5.5V 2.5TpC 1
4 TpTin Timer Input Period 5.5V 4TpC 1
5 TwIL Int. Request Input Low Time 5.5V 70 ns 1,2
6 TwIH Int. Request Input High Time 5.5V 2.5TpC 1,2

Twdt Watch-Dog Timer Time Out 5.5V 10 ms
TPOR Power-On Reset Time 5.5V 2 10 ms
TpC RC Oscillator Clock Period 5.5V 220 5000 ns

Notes:

1. Timing Reference uses 0.9 V

2. Interrupt request through Port 3 (P33-P31)

for a logic 1 and 0.1 VDD for a logic 0.

DD

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