BasicX-1 PDIP Pinout
Pin Primary Function Primary Description Alternate Function Alternate Description
1 PortB, Bit 0 General Purpose I/O Port COM2 Transmit Data See COM Ports
2 PortB, Bit 1 General Purpose I/O Port External RAM A16 See External RAM
3 PortB, Bit 2 General Purpose I/O Port Analog Input Positive See Analog Comparator
4 PortB, Bit 3 General Purpose I/O Port Analog Input Negative See Analog Comparator
5 PortB, Bit 4 General Purpose I/O Port SPI-CS EEPROM Chip Select See SPI EEPROM
6 PortB, Bit 5 General Purpose I/O Port SPI-MOSI See SPI Devices
7 PortB, Bit 6 General Purpose I/O Port SPI-MISO See SPI Devices
8 PortB, Bit 7 General Purpose I/O Port SPI-SCK See SPI Devices
9 Reset Low Active Reset   Internal Pullup
10 PortD, Bit 0 General Purpose I/O Port COM1 Receive Data See COM Ports and Network
11 PortD, Bit 1 General Purpose I/O Port COM1 Transmit Data See COM Ports and Network
12 PortD, Bit 2 General Purpose I/O Port COM2 Receive Data See COM Ports
13 PortD, Bit 3 General Purpose I/O Port Interrupt See Interrupt
14 PortD, Bit 4 General Purpose I/O Port Network Transmitter Enable See Network
15 PortD, Bit 5 General Purpose I/O Port Timer Functions See Timer
16 PortD, Bit 6 General Purpose I/O Port RAM & XIO Write Enable See RAM and XIO
17 PortD, Bit 7 General Purpose I/O Port RAM & XIO Read Enable See RAM and XIO
18 XTAL-OUT Crystal/Resonator No Connect for external CLK See Oscillator Options
19 XTAL-IN Crystal/Resonator External CMOS Oscillator In See Oscillator Options
20 Ground     See Below for DC Characteristics
21 PortC, Bit 0 General Purpose I/O Port RAM & XIO A8 See RAM and XIO
22 PortC, Bit 1 General Purpose I/O Port RAM & XIO A9 See RAM and XIO
23 PortC, Bit 2 General Purpose I/O Port RAM & XIO A10 See RAM and XIO
24 PortC, Bit 3 General Purpose I/O Port RAM & XIO A11 See RAM and XIO
25 PortC, Bit 4 General Purpose I/O Port RAM & XIO A12 See RAM and XIO
26 PortC, Bit 5 General Purpose I/O Port RAM & XIO A13 See RAM and XIO
27 PortC, Bit 6 General Purpose I/O Port RAM & XIO A14 See RAM and XIO
28 PortC, Bit 7 General Purpose I/O Port RAM & XIO A15 See RAM and XIO
29 Timer Output Multifunction Timer Output Output Capture Pulsetrain See OutputCapture
30 ALE Address Latch for RAM Address Latch for Extended I/O See RAM and XIO
31 ICP Input Capture Pin Input Capture Pin See InputCapture
32 PortA, Bit 7 General Purpose I/O Port RAM & XIO AD7 See RAM and XIO
33 PortA, Bit 6 General Purpose I/O Port RAM & XIO AD6 See RAM and XIO
34 PortA, Bit 5 General Purpose I/O Port RAM & XIO AD5 See RAM and XIO
35 PortA, Bit 4 General Purpose I/O Port RAM & XIO AD4 See RAM and XIO
36 PortA, Bit 3 General Purpose I/O Port RAM & XIO AD3 See RAM and XIO
37 PortA, Bit 2 General Purpose I/O Port RAM & XIO AD2 See RAM and XIO
38 PortA, Bit 1 General Purpose I/O Port RAM & XIO AD1 See RAM and XIO
39 PortA, Bit 0 General Purpose I/O Port RAM & XIO AD0 See RAM and XIO
40 VCC Power Supply 2.7 to 6 volts See Below for DC Characteristics

DC Characteristics:
   Vcc 2.7V to 6.0V (unless otherwise noted)
Parameter Condition Min Typ Max
Output Low Voltage Vcc = 5 Volts
Output Current = 10mA		     0.5 V
Output High Voltage Vcc = 5 Volts
Output Current = 10 mA		 4.5 V    
Output Source Current VCC = 5.0 Volts

VCC = 2.7 Volts		     10 mA

5 mA
Output Sink Current



Maximum Total		 VCC = 5.0 Volts

VCC = 2.7 Volts

For all Output Pins		     15 mA

10 mA

70mA
Reset Pullup Resistor   10K Ohms   50K Ohms
I/O Pin Programmable Pullup Resistor   35K Ohms   120K Ohms
Power Supply Active Mode   5 mA  
Idle Mode      
Pwr Down Wdog on   50 uA  
Pwr Down Wdog off   1 uA  

 
 

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