Datasheet

SDC21xx Motor Controller Datasheet 11
Electrical Specifications
Operating & Timing Specifications
Scripting
Thermal Specifications
The SDC21xx uses a conduction plate at the bottom of the board for heat extraction. For best results, attach firmly
with thermal compound paste against a metallic chassis so that heat transfers to the conduction plate to the chas-
sis. If no metallic surface is available, mount the controller on spacers so that forced or natural air flow can go over
the plate surface to remove heat.
TABLE 8.
Parameter Measure Point Min Typ Max Units
Command Latency Command to output change 1 0.5 1 ms
PWM Frequency Ch1, Ch2 outputs 10 18 (1) 20 kHz
Closed Loop update rate Internal 1000 Hz
USB Rate USB pins 12 MBits/s
RS232 baud rate Rx & Tx pins 115200 (2) Bits/s
RS232 Watchdog timeout Rx pin 1 (3) 65000 ms
Note 1: May be adjusted with configuration program
Note 2: 115200, 8-bit, no parity, 1 stop bit, no flow control
Note 3: May be disabled with value 0
TABLE 9.
Parameter Measure Point Min Typ Max Units
Scripting Flash Memory Internal 8192 Bytes
Max Basic Language programs Internal 1000 1500 Lines
Integer Variables Internal 1024 Words (1)
Boolean Variables Internal 1024 Symbols
Execution Speed Internal 50 000 100 000 Lines/s
Note 1: 32-bit words
TABLE 10.
Parameter Measure Point Model Min Typ Max Units
Board Temperature PCB All -40 85 (1) oC
Thermal Protection range PCB All 70 80 (2) oC
Thermal resistance Power MOSFETs to
heats sink
All 2 oC/W
Note 1: Thermal protection will protect the controller power
Note 2: Max allowed power out starts lowering at minimum of range, down to 0 at max of range