VRS51C1000
VRS51C1000 DIP-40 Pin Descriptions
T
ABLE
2: VRS51C1000 P
IN
D
ESCRIPTIONS FOR
DIP40
PACKAGE
DIP40
Name
I/O
Function
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
T2 / P1.0
T2EX / P1.1
P1.2
PWM0 / P1.3
PWM1 / P1.4
PWM2 / P1.5
PWM3 / P1.6
PWM4 / P1.7
RESET
RXD / P3.0
TXD / P3.1
#INT0 / P3.2
#INT1 / P3.3
T0 / P3.4
T1 / P3.5
#WR / P3.6
#RD / P3.7
XTAL2
XTAL1
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
VDD
P0.0 / AD0
P0.1 / AD1
P0.2 / AD2
P0.3 / AD3
P0.4 / AD4
P0.5 / AD5
P0.6 / AD6
P0.7 / AD7
#EA / VPP
ALE
PSEN
P2.7 / A15
P2.6 / A14
P2.5 / A13
P2.4 / A12
P2.3 / A11
P2.2 / A10
P2.1 / A9
P2.0 / A8
DIP40
Name
I/O
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
T2
P1.0
T2EX
P1.1
P1.2
PWM0
P1.3
PWM1
P1.4
PWM2
P1.5
PWM3
P1.6
PWM4
P1.7
RESET
RXD
P3.0
TXD
P3.1
#INT0
P3.2
#INT1
P3.3
T0
P3.4
T1
P3.5
#WR
P3.6
#RD
P3.7
XTAL2
XTAL1
VSS
I
I/O
I
I/O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
I
I
I/O
O
I/O
I
I/O
I
I/O
I
I/O
I
I/O
O
I/O
O
I/O
O
I
-
Timer 2 Clock Out
Bit 0 of Port 1
Timer 2 Control
Bit 1 of Port 1
Bit 2 of Port 1
PWM Channel 0
Bit 3 of Port 1
PWM Channel 1
Bit 4 of Port 1
PWM Channel 2
Bit 5 of Port 1
PWM Channel 3
Bit 6 of Port 1
PWM Channel 4
Bit 7 of Port 1
Reset
Receive Data
Bit 0 of Port 3
Transmit Data &
Bit 1 of Port 3
External Interrupt 0
Bit 2 of Port 3
External Interrupt 1
Bit 3 of Port 3
Timer 0
Bit 4 of Port 3
Timer 1 & 3
Bit 5 of Port
Ext. Memory Write
Bit 6 of Port 3
Ext. Memory Read
Bit 7 of Port 3
Oscillator/Crystal Output
Oscillator/Crystal In
Ground
P2.0
A8
P2.1
A9
P2.2
A10
P2.3
A11
P2.4
A12
P2.5
A13
P2.6
A14
P2.7
A15
#PSEN
ALE
#EA /
VPP
P0.7
AD7
P0.6
AD6
P0.5
AD5
P0.4
AD4
P0.3
AD3
P0.2
AD2
P0. 1
AD1
P0.0
AD0
VDD
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
O
O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
40
Bit 0 of Port 2
Bit 8 of External Memory Address
Bit 1 of Port 2
Bit 9 of External Memory Address
Bit 2 of Port 2
Bit 10 of External Memory Address
Bit 3 of Port 2 &
Bit 11 of External Memory Address
Bit 4 of Port 2
Bit 12 of External Memory Address
Bit 5 of Port 2
Bit 13 of External Memory Address
Bit 6 of Port 2
Bit 14 of External Memory Address
Bit 7 of Port 2
Bit 15 of External Memory Address
Program Store Enable
Address Latch Enable
External Access
Flash programming voltage input
Bit 7 Of Port 0
Data/Address Bit 7 of External
Memory
Bit 6 of Port 0
Data/Address Bit 6 of External
Memory
Bit 5 of Port 0
Data/Address Bit 5 of External
Memory
Bit 4 of Port 0
Data/Address Bit 4 of External
Memory
Bit 3 Of Port 0
Data/Address Bit 3 of External
Memory
Bit 2 of Port 0
Data/Address Bit 2 of External
Memory
Bit 1 of Port 0 & Data
Address Bit 1 of External Memory
Bit 0 Of Port 0 & Data
Address Bit 0 of External Memory
Supply input
VRS51C1000
DIP-40
31
30
29
28
27
26
25
24
23
22
21
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