Z86317 Datasheet, PDF (3/8 Pages) Zilog, Inc. – CMOS Z8 8-BIT MICROCONTROLLER

PIN DESCRIPTIONS
PRELIMINARY
Z86317
CMOS Z8^® 8-BIT MCU
P24
1
18
P23
P25
2
17
P22
P26
3
16
P21
P27
4
15
P20
VDD 5 Z86317 ₁₄
Gnd
RCIN
6
13
P02
AGND
7
12
P01
P31
8
11
P00
NC
9
10
P33
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
5
V_DD
Power Supply
6
RCIN RC Oscillator
7
AGND Analog Ground
8
P31
Port 3, Pin 1
In/Output
Input
Input
Input
Input
9
10
11-13
14
15-18
NC
P33
P00-P02
V_SS
P20-P23
Not Connected
Port 3, Pin 3,
Port 0, Pins 0,1,2
Ground
Port 2, Pins 0,1,2,3
Input
In/Output
Input
In/Output
PIN FUNCTIONS
RCIN. A precision 1% resistor is connected to RCIN,
generating oscillation with an internal capacitor.
Resistor values and corresponding frequencies are shown
in the following table and graph chart.
Table 2. Z86317 RC Frequency vs. External Precision Resistor
External Resistor
14K
16K
20K
22K
24K
26K
Average Frequency
4.140 MHz
3.627 MHz
2.925 MHz
2.681 MHz
2.462 MHz
2.273 MHz
External Resistor
28K
30K
32K
34K
36K
38K
Average Frequency
2.121 MHz
1.982 MHz
1.856 MHz
1.755 MHz
1.657 MHz
1.568 MHz
DS96KEY1102
3