
Note: "SPI connector" is now referred to as "wireless add-on port"
See these topics for more information on various hardware facilities of the EM2001:
•General-purpose I/O Lines •Wireless Add-on port, Wi-Fi Communications •Ethernet Port •Serial Ports •Analog-to-digital Converter (ADC) •I2C/SPI Support •Square Wave Generator •Flash and EEPROM Memory •Real-time Clock (RTC) and Backup Battery •LEDs and LED Lines •External LCD Support •External Keypad Support •Power, Reset, PLL Control, and Mode Selection Lines I/O pin assignment
Notes (refer to superscript numbers placed after pin #):
1.This line is 5V-tolerant and can be interfaced to 5V CMOS devices directly. 2.This line can be mapped to serve as an RTS, W0 output, or CLOCK output line of a serial port. The line can also be assigned to an I2C/SPI channel, or act as an interface line of the Wi-Fi add-on module, keypad, or an LED control channel. 3.This line can serve as a CTS, W0&1 input, or CLOCK input line of a serial port.
Pin #
|
Function
|
Description
|
1 (1,2)
|
GPIO0/P0.0/RTS0
|
General-purpose I/O line 0 (P0.0).
|
2 (1,2)
|
GPIO1/P0.1/RTS1
|
General-purpose I/O line 1 (P0.1).
|
3 (1,2)
|
GPIO2/P0.2/RTS2
|
General-purpose I/O line 2 (P0.2).
|
4 (1,2)
|
GPIO3/P0.3/RTS3
|
General-purpose I/O line 3 (P0.3).
|
5 (1,2)
|
GPIO4/P0.4/DTR0
|
General-purpose I/O line 4 (P0.4).
|
6 (1,2)
|
GPIO5/P0.5/DTR1
|
General-purpose I/O line 5 (P0.5).
|
7 (1,2)
|
GPIO6/P0.6/DTR2
|
General-purpose I/O line 6 (P0.6).
|
8 (1,2)
|
GPIO7/P0.7/DTR3
|
General-purpose I/O line 7 (P0.7).
|
9 (1,2)
|
GPIO8/P1.0/RX0
|
General-purpose I/O line 8 (P1.0);
RX, W1 input, and DATA input of the serial port 0.
|
10 (1,2)
|
GPIO9/P1.1/TX0
|
General-purpose I/O line 9 (P1.1);
TX, W1 output, and DATA output of the serial port 0.
|
11 (1,2)
|
GPIO10/P1.2/RX1
|
General-purpose I/O line 10 (P1.2);
RX, W1 input, and DATA input of the serial port 1.
|
12 (1,2)
|
GPIO11/P1.3/TX1
|
General-purpose I/O line 11 (P1.3);
TX, W1 output, and DATA output of the serial port 1.
|
13 (1,2)
|
GPIO12/P1.4/RX2
|
General-purpose I/O line 12 (P1.4);
RX, W1 input, and DATA input of the serial port 2.
|
14 (1,2)
|
GPIO13/P1.5/TX2
|
General-purpose I/O line 13 (P1.5);
TX, W1 output, and DATA output of the serial port 2.
|
15 (1,2)
|
GPIO14/P1.6/RX3
|
General-purpose I/O line 14 (P1.6);
RX, W1 input, and DATA input of the serial port 3.
|
16 (1,2)
|
GPIO15/P1.7/TX3
|
General-purpose I/O line 15 (P1.7);
TX, W1 output, and DATA output of the serial port 3.
|
17 (1,2,3)
|
GPIO16/P2.0/INT0/CTS0
|
General-purpose I/O line 16 (P2.0);
interrupt line 0.
|
18 (1,2,3)
|
GPIO17/P2.1/INT1/CTS1
|
General-purpose I/O line 17 (P2.1);
interrupt line 1.
|
19 (1,2,3)
|
GPIO18/P2.2/INT2/CTS2
|
General-purpose I/O line 18 (P2.2);
interrupt line 2.
|
20 (1,2,3)
|
GPIO19/P2.3/INT3/CTS3
|
General-purpose I/O line 19 (P2.3);
interrupt line 3.
|
21 (1,2,3)
|
GPIO20/P2.4/INT4/DSR0
|
General-purpose I/O line 20 (P2.4);
interrupt line 4.
|
22 (1,2,3)
|
GPIO21/P2.5/INT5/DSR1
|
General-purpose I/O line 21 (P2.5);
interrupt line 5.
|
23 (1,2,3)
|
GPIO22/P2.6/INT6/DSR2
|
General-purpose I/O line 22 (P2.6);
interrupt line 6.
|
24 (1,2,3)
|
GPIO23/P2.7/INT7/DSR3
|
General-purpose I/O line 23 (P2.7);
interrupt line 7.
|
25 (1,2)
|
GPIO40/ADC0
|
General-purpose I/O line 40 (does not belong to any 8-bit port); ADC input 0.
|
26 (1,2)
|
GPIO41/ADC1
|
General-purpose I/O line 41 (does not belong to any 8-bit port); ADC input 1.
|
27 (1,2)
|
GPIO42/ADC2
|
General-purpose I/O line 42 (does not belong to any 8-bit port); ADC input 2.
|
28 (1,2)
|
GPIO43/ADC3
|
General-purpose I/O line 43 (does not belong to any 8-bit port); ADC input 3.
|
29
|
GND
|
System ground.
|
30 (1,2)
|
GPIO44
|
General-purpose I/O line 44 (does not belong to any 8-bit port).
|
31 (1,2)
|
GPIO25/P3.1
|
General-purpose I/O line 25 (P3.1).
|
32 (1,2)
|
GPIO24/P3.0
|
General-purpose I/O line 24 (P3.0).
|
33 (1,2)
|
GPIO27/P3.3
|
General-purpose I/O line 27 (P3.3).
|
34 (1,2)
|
GPIO26/P3.2
|
General-purpose I/O line 26 (P3.2).
|
35 (1,2)
|
GPIO29/P3.5
|
General-purpose I/O line 29 (P3.5).
|
36 (1,2)
|
GPIO28/P3.4
|
General-purpose I/O line 28 (P3.4).
|
37 (1,2)
|
GPIO31/P3.7
|
General-purpose I/O line 31 (P3.7).
|
38 (1,2)
|
GPIO30/P3.6
|
General-purpose I/O line 30 (P3.6).
|
39 (1,2)
|
GPIO33/P4.1
|
General-purpose I/O line 33 (P4.1).
|
40 (1,2)
|
GPIO32/P4.0
|
General-purpose I/O line 32 (P4.0).
|
41 (1,2)
|
GPIO35/P4.3
|
General-purpose I/O line 35 (P4.3).
|
42 (1,2)
|
GPIO34/P4.2
|
General-purpose I/O line 34 (P4.2).
|
43 (1,2)
|
GPIO37/P4.5
|
General-purpose I/O line 37 (P4.5).
|
44 (1,2)
|
GPIO36/P4.4
|
General-purpose I/O line 36 (P4.4).
|
45 (1,2)
|
GPIO39/P4.7
|
General-purpose I/O line 39 (P4.7).
|
46 (1,2)
|
GPIO38/P4.6
|
General-purpose I/O line 38 (P4.6).
|
47
|
MD
|
Mode selection pin.
|
48 (1,2)
|
GPIO55
|
General-purpose I/O line 55 (does not belong to any 8-bit port).
|
49
|
RST
|
Reset line, active high.
|
50 (1,2)
|
GPIO54
|
General-purpose I/O line 54 (does not belong to any 8-bit port).
|
51
|
SR
|
Red status LED control line.
|
52
|
SG
|
Green status LED control line.
|
53 (1,2)
|
GPIO46
|
General-purpose I/O line 46.
|
54 (1,2)
|
GPIO45/CO
|
General-purpose I/O line 45 (does not belong to any 8-bit port);
square wave output line.
|
55 (1,2)
|
GPIO48
|
General-purpose I/O line 48 (does not belong to any 8-bit port).
|
56 (1,2)
|
GPIO47
|
General-purpose I/O line 47 (does not belong to any 8-bit port).
|
57
|
DBGRX
|
RX line of debug serial port.
|
58
|
3.3V
|
Direct 3.3V power input or 3.3V power output if you are supplying 12V power via a power jack or VIN pin.
|
59
|
DBGTX
|
TX line of debug serial port.
|
60
|
VIN (12V NOM.)
|
12V (nominal) power input to the onboard power regulator. Acceptable input voltage range is 8-20V.
|
61
|
GND
|
Wireless add-on port, ground line.
|
62
|
VCC
|
Wireless add-on port, 3.3V power output for the wireless add-on module.
|
63 (1,2)
|
GPIO49
|
Wireless add-on port, general-purpose I/O line 49 (does not belong to any 8-bit port).
|
64
|
<N.C.>
|
Leave this pin unconnected.
|
65 (1,2)
|
GPIO50
|
Wireless add-on port, general-purpose I/O line 50 (does not belong to any 8-bit port).
|
66
|
<N.C.>
|
Leave this pin unconnected.
|
67 (1,2)
|
GPIO51
|
Wireless add-on port, general-purpose I/O line 51 (does not belong to any 8-bit port).
|
68
|
<N.C.>
|
Leave this pin unconnected.
|
69 (1,2)
|
GPIO52
|
Wireless add-on port, general-purpose I/O line 52 (does not belong to any 8-bit port).
|
70 (1,2)
|
GPIO53
|
Wireless add-on port, general-purpose I/O line 53 (does not belong to any 8-bit port).
|
|