参数资料
型号: MC68HC705C9AVFN
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, LCC-44
文件页数: 105/177页
文件大小: 1941K
代理商: MC68HC705C9AVFN
General Description
Functional Pin Descriptions
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
General Description
33
Figure 1-8. 44-Pin QFP Pin Assignments
1.7.1 VDD and VSS
Power is supplied to the MCU using these two pins. VDD is the positive
supply and VSS is ground.
1.7.2 VPP
This pin provides the programming voltage to the EPROM array. For
normal operation, VPP should be tied to VDD.
33
32
31
30
29
28
27
26
25
24
23
PC3
PC2
PC1
PC0
PD0/RDI
PD1/TDO
PD2/MISO
PD3/MOSI
PD4/SCK
PD5/SS
TCMP
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
44
43
42
41
40
38
37
36
35
34
PD
7
PC
4
PC
5
PC
6
PC
7
V
SS
N/
C
PB7
PB6
PB5
PB4
TC
A
P
OSC
2
OSC
1
V
DD
N/
C
N/
C
R
E
SET
IR
Q
V
PP
PA
7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
PB0
PB1
PB2
PB3
39
N/
C
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