參數資料
型號: MC68B912B32
廠商: Motorola, Inc.
英文描述: 2.5V 100ppm/Degrees C, 50uA in SOT23-3 Series (Bandgap) Voltage Reference 3-SOT-23 -40 to 125
中文描述: 16位微控制器
文件頁數: 9/128頁
文件大?。?/td> 748K
代理商: MC68B912B32
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
9
3 Pinout and Signal Descriptions
3.1 MC68HC912B32 Pin Assignments
The MC68HC912B32 is available in a 80-pin quad flat pack (QFP). Most pins perform two or more func-
tions, as described in the
3.3 Signal Descriptions
.
Figure 3
shows pin assignments. Shaded pins are
power and ground.
Figure 3 Pin Assignments for MC68HC912B32
MC68HC912B32
80-PIN QFP
HC12 80QFP
PP5
PP4
PW3 / PP3
PW2 / PP2
PW1/ PP1
PW0/ PP0
41
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
4
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
6
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
8
PA2 / DATA10 / ADDR10
PA3 / DATA11 / ADDR11
PA4 / DATA12 / ADDR12
PA5 / DATA13 / ADDR13
PA6 / DATA14 / ADDR14
PA7 / DATA15 / ADDR15
P
P
ADDR0 / DATA0 / PB0
ADDR1 / DATA1 / PB1
ADDR2 / DATA2 / PB2
SMODN / TAGHI/ BKGD
PAI / IOC7 / PT7
IOC6 / PT6
IOC5 / PT5
IOC4 / PT4
IOC3 / PT3
IOC2 / PT2
IOC1 / PT1
IOC0 / PT0
A
X
I
P
R
L
X
E
R
V
D
V
S
E
M
M
D
A
A
A
A
A
V
DD
V
SS
V
SSA
V
DDA
PAD7 / AN7
PAD6 / AN6
PAD5 / AN5
PAD4 / AN4
PAD3 / AN3
PAD2 / AN2
PAD1 / AN1
PAD0 / AN0
V
RL
V
RH
V
SS
V
DD
P
P
P
P
P
P
P
P
V
F
P
P
P
P
P
P
P
V
S
V
D
A
P
PORT A*
PORT B
PORT E
PORT E
PORT DLC
PORT S
PORT P
P
P
* In narrow mode, high and low data bytes are multiplexed in alternate bus cycles on port A.
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