P R E L I M I N A R Y
Z86217/C17
CP95KEY1000
P
RELIMINARY
C
USTOMER
P
ROCUREMENT
S
PECIFICATION
Z86217/C17
CMOS Z8
®
8-B
IT
M
ICROCONTROLLERS
(P
OINTING
D
EVICE
/T
RACKBALL
)
FEATURES
Part
Number
Z86217
Z86C17
* General-Purpose
ROM
(Kbytes)
2
2
RAM*
(Bytes)
124
124
I/O
Lines
14
14
Speed
(MHz)
4
4
s
s
s
s
s
s
s
Permanent Watch-Dog Timer (WDT)
Oscillator Filter
Two Programmable 8-Bit Counter/Timers
Low-EMI Operation
Scalable Trip-Point Buffer
On-Board Pull-Up Resistors
High Drive Ports Can Sink 20 mA Per Pin, with Three
Pins Maximum
s
s
s
18-Pin DIP and SOIC Packages
3.0- to 5.5-Volt Operating Range
0°C to 70°C Operating Temperature Range
GENERAL DESCRIPTION
The Z86217/C17 are members of Zilog's Z8
®
family of
microcontrollers designed to reduce external system com-
ponents and offer easy software/hardware development
tools for pointing device and trackball applications.
The devices feature on-board pull-up resistors, and a
scalable trip-point buffer to accommodate opto-transistor
outputs. The high drive ports are capable of up to 20 mA
(at V
OL
= 0.8-volt) current sinking per pin, with three pins
maximum, providing extra sinking current capability.
The Z86217/C17's permanently enabled Watch-Dog Timer
(WDT) operates upon power-up of the MCU, and provides
added operational reliability for pointing device and
trackball environments.
An oscillator filter assists in separating out high-frequency
noise from the oscillator input pin.
Two on-chip counter/timers with a large number of
selectable modes, offload the system of administering
real-time tasks such as counting/timing and I/O data
communications.
Notes:
Refer to the DC electrical characteristics for detailed specification of the
sinking current.
On the Z86C17, P24-P27 has a 20K pull-up, and P32 has a 47K pull-
down. The Z86217 does not have these functions.
All Signals with a preceding front slash, "/", are active Low, e.g.; B//W
(WORD is active Low); /B/W (BYTE is active Low, only).
Power connections follow conventional descriptions below:
Connection
Power
Ground
Circuit
V
CC
GND
Device
V
DD
V
SS
CP95KEY1000 8/95
1
P R E L I M I N A R Y
Z86217/C17
CP95KEY1000
ABSOLUTE MAXIMUM RATINGS
Sym
V
DD
T
STG
T
A
Parameter
Supply Voltage (*)
Storage Temp
Oper Ambient Temp
Min
–0.3
–65°
†
Max
+7
+150°
†
Units
V
C
C
Stress greater than those listed under Absolute Maximum
Ratings may cause permanent damage to the device. This
is a stress rating only; operation of the device at any
condition above those indicated in the operational sec-
tions of these specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods
may affect device reliability.
Notes:
* Voltages on all pins with respect to GND
† See Ordering Information
STANDARD TEST CONDITIONS
The characteristics listed below apply for standard test
conditions as noted. All voltages are referenced to GND.
Positive current flows into the referenced pin (Test Load).
From Output
Under T
est
I
150 pF
Test Load Diagram
CAPACITANCE
T
A
= GND = 0V, f = 1.0 MHz, unmeasured pins to GND
Parameter
Input capacitance
Output capacitance
I/O capacitance
Max
10 pF
20 pF
25 pF
V
dd
SPECIFICATION
V
dd
= 3.0V to 5.5V
3
Microchip MCU
京公网安备 11010802033920号
EEWORLD
