mc68ec020 Freescale Semiconductor, Inc, mc68ec020 Datasheet - Page 298

• Manufacturer Part Number: mc68ec020
• Description: Microprocessors
• Manufacturer: Freescale Semiconductor, Inc

11.2.9 MC68EC020 FG Suffix—Pin Assignment
The V
connections for the address bus buffers, data bus buffers, and all other output buffers and
internal logic. It is recommended that all pins be connected to power and ground as
indicated. NC pins are reserved by Motorola for future use and should have no external
connection.
13-10
*NC—Do not connect to this pin.
GND
GND
V CC
A0
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A1
CC
100
81
1
80
and GND pins are separated into four groups to provide individual power supply
Address Bus
Data Bus
Group
Logic
Clock
MC68838 USER’S MANUAL
7, 8, 70, 71
44, 57
V CC
90
—
MC68EC020
(TOP VIEW)
3, 20, 21, 68, 69
26, 43, 58, 59
72, 89, 100
GND
4
MOTOROLA
30
51
50
31
GND
V CC
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27