MPC89L51A Megawin Technology, MPC89L51A Datasheet - Page 4

• Manufacturer Part Number: MPC89L51A
• Description: 8-bit micro-controller
• Manufacturer: Megawin Technology

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Pin Description
Pin Definition
4
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
P1.0 (T2)
P1.1 (T2EX)
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P2.0 (A8)
P2.1 (A9)
P2.2 (A10)
P2.3 (A11)
P2.4 (A12)
P2.5 (A13)
P2.6 (A14)
P2.7 (A15)
P3.0 (RXD)
P3.1 (TXD)
P3.2 (INT0)
P3.3 (INT1)
P3.4 (T0)
Pin Name
DIP-40
39
38
37
36
35
34
33
32
21
22
23
24
25
26
27
28
10
11
12
13
14
1
2
3
4
5
6
7
8
Pin Number
PLCC-44
43
42
41
40
39
38
37
36
24
25
26
27
28
29
30
31
13
14
15
16
11
2
3
4
5
6
7
8
9
MPC89x51A Data Sheet
PQFP-44
37
36
35
34
33
32
31
30
18
19
20
21
22
23
24
25
10
40
41
42
43
44
1
2
3
5
7
8
9
Type
BU General-purposed I/O with weak pull-up
BU Port2 is an 8-bits bi-directional I/O port
BU General-purposed I/O with weak pull-up
B
Port0 is an open-drain, bi-directional IO
port. When 1s are written to Port0, they
become high-impedance inputs. Port0 is
also multiplexed with low-order address
or data bus during accesses to external
program and data memory.
resistance inside. When 1s are written
into Port1, the strong output driving
PMOS only turn-on two clock periods
and then the weak pull-up resistance
keep the port high.
P1.0 is also used as one of event
sources for timer2, or output carrier of
timer2, alias T2.
P1.1
interrupt-controlling sources for time2,
alias T2EX.
with pull-up resistance. Except being as
GPIO,
address bytes during accessing to
external program and data memory.
resistance inside. When 1s are written
into Port1, the strong output driving
PMOS only turn-on two clock periods
and then the weak pull-up resistance
is
Port2
also
Description
emits
used
the
as
MEGAWIN
high-order
one
of