MC68HC705P9CDW FREESCALE [Freescale Semiconductor, Inc], MC68HC705P9CDW Datasheet - Page 26

• Manufacturer Part Number: MC68HC705P9CDW
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Pin Descriptions
2.2 Pin Assignments
2.3 Pin Functions
2.3.1 V
Technical Data
26
DD
and V
SS
V
from a single 5-V 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 as
Figure 2-2
bypass capacitors as close as
possible to the MCU. C2 is an
optional bulk current bypass capacitor for use in applications that require
the port pins to source high current levels.
DD
Freescale Semiconductor, Inc.
and V
For More Information On This Product,
SS
shows. Place the
Go to: www.freescale.com
are the power supply and ground pins. The MCU operates
Pin Descriptions
PB5/SDO
IRQ/V
PB7/SCK
Figure 2-1. Pin Assignments
PB6/SDI
RESET
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
V
PP
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Figure 2-2. Bypassing
V
Recommendation
DD
V
OSC1
OSC2
PD7/TCAP
TCMP
PD5
PC0
PC1
PC2
PC3/AN3
PC4/AN2
PC5/AN1
PC6/AN0
PC7/V
DD
MC68HC705P9 — Rev. 4.0
RH
0.1 F
+
MCU
C1
C2
MOTOROLA