s908gz60cfa Freescale Semiconductor, Inc, s908gz60cfa Datasheet - Page 28

• Manufacturer Part Number: s908gz60cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

General Description
1.5 Pin Functions
Descriptions of the pin functions are provided here.
1.5.1 Power Supply Pins (V
V
Fast signal transitions on MCU pins place high, short-duration current demands on the power supply. To
prevent noise problems, take special care to provide power supply bypassing at the MCU as
shows. Place the C1 bypass capacitor as close to the MCU as possible. Use a high-frequency-response
ceramic capacitor for C1. C2 is an optional bulk current bypass capacitor for use in applications that
require the port pins to source high current levels.
28
DD
and V
PTD0/SS/MCLK
PTD3/SPSCK
PTD1/MISO
PTD2/MOSI
SS
PTE1/RxD
PTE0/TxD
PTE2
PTE3
PTE4
PTE5
are the power supply and ground pins. The MCU operates from a single power supply.
PTF0
PTF1
PTF2
PTF3
RST
IRQ
16
1
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
10
11
12
13
14
15
2
3
4
5
6
7
8
9
17
64
18
63
19
Figure 1-4. 64-Pin QFP Pin Assignments
62
DD
20
61
and V
21
60
22
59
SS
23
)
58
57
24
56
25
26
55
27
54
28
53
52
29
51
30
50
31
32
49
40
47
46
45
44
43
42
41
39
38
37
36
35
34
Freescale Semiconductor
48
33
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTC5
PTG2/AD18
PTA1/KBD1/AD9
PTA0/KBD0/AD8
PTC6
PTG3/AD19
PTG1/AD17
PTG0/AD16
V
V
PTB7/AD7
PTB6/AD6
PTA2/KBD2/AD10
SSAD
DDAD
/V
/V
REFL
REFH
Figure 1-5