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SMC-40 Features
The SMC-40 is a microcomputer chip capable of indexing
stepping motors. This advanced
controller is fast, low
power and comes in a small package size.
· NO crystal oscillator required
· NO reset circuit required
· Self contained non-volatile memory
· Maximum step rates above 65,000 SPS
· Non-volatile memory for stand alone operation
· Multiple axis control from a single COM port
· Limit and Home inputs
· Go and soft stop inputs
· Six user ports
· Moving/Driver Enable output
· Small 28 pin PLCC28 and TSSOP28 package size
Available single chip (I2C) peripherals
· Additional NV (EEprom) memory
· Analog input processor
· Encoder feedback processor
Minimum Circuit Requirements
Only a few components are necessary to create a complete single axis
controller. All user inputs and outputs are 3-5 volt logic
and should be appropriately buffered.
SMC-40
STEP MOTOR
CONTROL IC’s
15 Led 1
Led 2
16
Mvg 27
Xdir
28
5 Home
PTYi/o
4
6 rst
Port 2
2
14 Port 4
Dir 22
23 Port 5
25 LimB
Port 3
13
26 SS
19 LimA
Step 20
24 Port 6 Xstep 10
SCL 12
SDA
11
18 TXD 17 RXD
3 GO
1 Port 1
3.3V 21 7 GND
SMC-40
1 GND
3 Vin Out 2
5
9
10
14
7
2
4
3
12
11
6
75ALS180
+5V
GND
TXD+
TXDRXDRXD+
RS232 - RXD
RS232 - TXD
RS-422
RS-232
3.3k (2)
+5V
+5V
Peripherals:
Analog /shuttle processor SMO-40
Encoder feedback SME-40
2048 Bytes NV (EEPROM)
3.3k
+5V
Disable
Jumper
Expansion to
more SMC-40's
Party Line
To Power Driver
Step
Dir.
Enable
Enable optional
+5V
3.3V
User
Inputs
and
Outputs
Actual Size
PLCC28 TSSOP28
SMC-40
SMC-40
