VMX51C900 Datasheet, PDF (4/55 Pages) List of Unclassifed Manufacturers – Versa Mix 8051 MCU with LCD Controller and ADC

VMX51C900
Pin Descriptions for QFP-44
TABLE 2: PIN DESCRIPTIONS FOR QFP-44
PLCC
- 44
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Name
PWMB
P1.5
P1.6
P1.7
RES
RXD
P3.0
P4.3
TXD
P3.1
#INT0
P3.2
#INT1
P3.3
ADCIN0
T0
P3.4
ADCIN1
T1
P3.5
ADCIN2
#WR
P3.6
ADCIN3
#RD
P3.7
XTAL2
XTAL1
VSS
P4.0
LCDCOM0
P2.0
A8
LCDCOM1
P2.1
A9
LCDCOM2
P2.2
A10
LCDCOM3
P2.3
A11
LCDSEG0
P2.4
A12
LCDSEG1
P2.5
A13
LCDSEG2
P2.6
A14
LCDSEG3
P2.7
A15
LCDSEG4
#PSEN
LCDSEG5
ALE
I/O
Function
O PWM Channel B
I/O Bit 5 of Port 1
I/O Bit 6 of Port 1
I/O Bit 7 of Port 1
I
Reset
I
Receive Data
I/O Bit 0 of Port 3
I/O Bit 3 of Port 4
O Transmit Data &
I/O Bit 1 of Port 3
I
External Interrupt 0
I/O Bit 2 of Port 3
I
External Interrupt 1
I/O Bit 3 of Port 3
Ain ADC input 0
I
Timer 0
I/O Bit 4 of Port 3
Ain ADC input 1
I
Timer 1 & 3
I/O Bit 5 of Port
Ain ADC input 2
O Ext. Memory Write
I/O Bit 6 of Port 3
Ain ADC input 3
O Ext. Memory Read
I/O Bit 7 of Port 3
O Oscillator/Crystal Output
I
Oscillator/Crystal In
-
Ground
I/O Bit 0 of Port 4
-
LCD Driver Common 0
I/O Bit 0 of Port 2
O Bit 8 of Ext. Memory Address
-
LCD Driver Common 1
I/O Bit 1 of Port 2
O Bit 9 of Ext. Memory Address
-
LCD Driver Common 2
I/O Bit 2 of Port 2
O Bit 10 of Ext. Memory Address
-
LCD Driver Common 3
I/O Bit 3 of Port 2 &
O Bit 11 of Ext. Memory Address
-
LCD Segment 0
I/O Bit 4 of Port 2
O Bit 12 of Ext. Memory Address
-
LCD Segment 1
I/O Bit 5 of Port 2
O Bit 13 of External Memory Address
-
LCD Segment 2
I/O Bit 6 of Port 2
O Bit 14 of External Memory Address
-
LCD Segment 3
I/O Bit 7 of Port 2
O Bit 15 of External Memory Address
-
LCD Segment 4
O Program Store Enable
-
LCD Segment 5
O Address Latch Enable
PLCC
Name
I/O
Function
- 44
28 P4.1
I/O Bit 1 of Port 4
29 #EA
I
External Access
LCDSEG6 -
LCD Segment 6
30 P0.7
I/O Bit 7 Of Port 0
AD7
I/O Data/Address Bit 7 of Ext. Memory
LCDSEG7 -
LCD Segment 7
31 P0.6
I/O Bit 6 of Port 0
AD6
I/O Data/Address Bit 6 of Ext. Memory
LCDSEG8 -
LCD Segment 8
32 P0.5
I/O Bit 5 of Port 0
AD5
I/O Data/Address Bit 5 of Ext. Memory
LCDSEG9 -
LCD Segment 9
33 P0.4
I/O Bit 4 of Port 0
AD4
I/O Data/Address Bit 4 of Ext. Memory
LCDSEG10 -
LCD Segment 10
34 P0.3
I/O Bit 3 Of Port 0
AD3
I/O Data/Address Bit 3 of Ext. Memory
LCDSEG11 -
LCD Segment 11
35 P0.2
I/O Bit 2 of Port 0
AD2
I/O Data/Address Bit 2 of Ext. Memory
LCDSEG12 -
LCD Segment 12
36 P0. 1
I/O Bit 1 of Port 0 & Data
AD1
I/O Address Bit 1 of Ext. Memory
LCDSEG13 -
LCD Segment 13
37 P0.0
I/O Bit 0 Of Port 0 & Data
AD0
I/O Address Bit 0 of Ext. Memory
38 VDD
-
5V supply
39 P4.2
I/O Bit 2 of Port 4
40
T2
P1.0
I
Timer 2 Clock Out
I/O Bit 0 of Port 1
41
T2EX
P1.1
I
Timer 2 Control
I/O Bit 1 of Port 1
42
P1.2
PWMA
I/O Bit 2 of Port 1
O PWM Channel A
43 P1.3
I/O Bit 3 of Port 1
44 P1.4
I/O Bit 4 of Port 1
LCDSEG10/AD3/P0.3
LCDSEG11/AD2/P0.2
LCDSEG12/AD1/P0.1
LCDSEG13/AD0/P0.0
VDD
P4.2
PWM0/T2/P1.0
T2EX/P1.1
PWMA/P1.2
P1.3
P1.4
33
34
23
22
VMX51C900
QFP-44
44
12
1
11
P2.4/A12/LCDSEG0
P2.3/A11/LCDCOM3
P2.2/A10/LCDCOM2
P2.1/A9/LCDCOM1
P2.0/A8/LCDCOM0
P4.0
VSS
XTAL1
XTAL2
P3.7/#RD/ADCIN3
P3.6/#WR/ADCIN2
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