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68HC05P9A Datasheet(PDF) 14 Page - Freescale Semiconductor, Inc

Part # 68HC05P9A
Description  SPECIFICATION(General Release)
PDF  90 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

68HC05P9A Datasheet(HTML) 14 Page - Freescale Semiconductor, Inc

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GENERAL RELEASE SPECIFICATION
GENERAL DESCRIPTION
MC68HC05P9A
1-4
Rev. 2.0
1.4
Pin Assignments
The MC68HC05P9A pin assignments are shown in Figure 1-2.
Figure 1-2. Pin Assignments
1.5
Signal Description
The following paragraphs provide a description of the signals.
1.5.1 V
DD
and V
SS
Power is supplied to the microcontroller through VDD and VSS. VDD is the power
supply and VSS is ground.
1.5.2 IRQ
This pin has a mask option that provides two different choices of interrupt
triggering sensitivity. The IRQ pin contains an internal Schmitt trigger as part of its
input to improve noise immunity. Refer to SECTION 3 CENTRAL PROCESSING
UNIT for more detail.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
27
28
VDD
OSC1
OSC2
TCAP/PD7
TCMP
PD5
PC0
PC1
RESET
IRQ
PA7
PA5
PA4
PA3
PA2
PA1
PA0
PA6
15
16
17
18
19
20
SDO/PB5
SDI/PB6
SCK/PB7
VSS
21
22
23
24
25
26
PC2
PC3/AN3
PC4/AN2
PC5/AN1
PC6/AN0
PC7/VRH
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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