mc68hc705k1 Freescale Semiconductor, Inc, mc68hc705k1 Datasheet - Page 19

• Manufacturer Part Number: mc68hc705k1
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

1.6 Pin Assignments
1.6.1 V
MC68HC705K1 — Rev. 2.0
DD
and V
SS
Figure 1-2
V
from a single 5-volt power supply.
Very fast signal transitions occur on the MCU pins, placing high
short-duration current demands on the power supply. To prevent noise
problems, take special care to provide good power supply bypassing at
the MCU. Place bypass capacitors as close to the MCU as possible, as
Figure 1-3
DD
Freescale Semiconductor, Inc.
and V
For More Information On This Product,
MCU
Figure 1-3. Bypassing Layout Recommendation
SS
shows the MC68HC705K1 pin assignments.
shows.
Go to: www.freescale.com
are the power supply and ground pins. The MCU operates
V
V
General Description
DD
SS
C1
V+
Figure 1-2. Pin Assignments
+
PB1/OSC3
C2
RESET
IRQ/V
PB0
PA0
PA1
PA2
PA3
PP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OSC1
OSC2
V
V
PA7
PA6
PA5
PA4
SS
DD
OSC1
OSC2
V
V
DD
SS
General Description
Pin Assignments
C1
Technical Data
C2