TMC220X, TMC2224 DATASHEET (Rev. 1.09 / 2019-JUL-17) 3
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Table of Contents
1 PRINCIPLES OF OPERATION ......................... 4
1.1 KEY CONCEPTS ................................................ 5
1.2 CONTROL INTERFACES ..................................... 6
1.3 MOVING AND CONTROLLING THE MOTOR ........ 6
1.4 STEALTHCHOP2 & SPREADCYCLE DRIVER ....... 6
1.5 PRECISE CLOCK GENERATOR AND CLK INPUT... 7
1.6 AUTOMATIC STANDSTILL POWER DOWN......... 7
1.7 INDEX OUTPUT ................................................ 7
2 PIN ASSIGNMENTS ........................................... 8
2.1 PACKAGE OUTLINE TMC2208 ........................ 8
2.2 SIGNAL DESCRIPTIONS TMC2208 .................. 8
2.3 PACKAGE OUTLINE TMC2202 ........................ 9
2.4 SIGNAL DESCRIPTIONS TMC2202 .................. 9
2.5 PACKAGE OUTLINE TMC2224 ...................... 10
2.6 SIGNAL DESCRIPTIONS TMC2224 ................ 11
3 SAMPLE CIRCUITS .......................................... 12
3.1 STANDARD APPLICATION CIRCUIT ................ 12
3.2 INTERNAL RDSON SENSING .......................... 12
3.3 5V ONLY SUPPLY .......................................... 13
3.4 CONFIGURATION PINS .................................. 14
3.5 HIGH MOTOR CURRENT ................................. 14
3.6 DRIVER PROTECTION AND EME CIRCUITRY ... 15
4 UART SINGLE WIRE INTERFACE ................ 16
4.1 DATAGRAM STRUCTURE ................................. 16
4.2 CRC CALCULATION ....................................... 18
4.3 UART SIGNALS ............................................ 18
4.4 ADDRESSING MULTIPLE SLAVES .................... 19
5 REGISTER MAP ................................................. 20
5.1 GENERAL REGISTERS ..................................... 21
5.2 VELOCITY DEPENDENT CONTROL ................... 26
5.3 SEQUENCER REGISTERS ................................. 27
5.4 CHOPPER CONTROL REGISTERS ..................... 28
6 STEALTHCHOP™ .............................................. 34
6.1 AUTOMATIC TUNING ..................................... 34
6.2 STEALTHCHOP OPTIONS ................................ 37
6.3 STEALTHCHOP CURRENT REGULATOR ............. 37
6.4 VELOCITY BASED SCALING ............................ 39
6.5 COMBINING STEALTHCHOP AND SPREADCYCLE .
..................................................................... 41
6.6 FLAGS IN STEALTHCHOP ............................... 42
6.7 FREEWHEELING AND PASSIVE BRAKING ........ 43
7 SPREADCYCLE CHOPPER ............................... 45
7.1 SPREADCYCLE SETTINGS ............................... 46
8 SELECTING SENSE RESISTORS .................... 49
9 MOTOR CURRENT CONTROL ........................ 50
9.1 ANALOG CURRENT SCALING VREF ............... 51
10 INTERNAL SENSE RESISTORS ..................... 53
11 STEP/DIR INTERFACE .................................... 55
11.1 TIMING ......................................................... 55
11.2 CHANGING RESOLUTION ............................... 56
11.3 MICROPLYER STEP INTERPOLATOR AND STAND
STILL DETECTION ....................................................... 57
11.4 INDEX OUTPUT ............................................. 58
12 INTERNAL STEP PULSE GENERATOR ......... 59
13 DRIVER DIAGNOSTIC FLAGS ...................... 60
13.1 TEMPERATURE MEASUREMENT ....................... 60
13.2 SHORT PROTECTION ...................................... 60
13.3 OPEN LOAD DIAGNOSTICS ........................... 61
13.4 DIAGNOSTIC OUTPUT ................................... 61
14 QUICK CONFIGURATION GUIDE ................ 62
15 EXTERNAL RESET ............................................. 65
16 CLOCK OSCILLATOR AND INPUT ............... 65
17 ABSOLUTE MAXIMUM RATINGS ................. 66
18 ELECTRICAL CHARACTERISTICS ................. 66
18.1 OPERATIONAL RANGE ................................... 66
18.2 DC AND TIMING CHARACTERISTICS .............. 67
18.3 THERMAL CHARACTERISTICS.......................... 71
19 LAYOUT CONSIDERATIONS ......................... 72
19.1 EXPOSED DIE PAD ........................................ 72
19.2 WIRING GND .............................................. 72
19.3 SUPPLY FILTERING ........................................ 72
19.4 LAYOUT EXAMPLE TMC2208 ........................ 73
20 PACKAGE MECHANICAL DATA .................... 74
20.1 DIMENSIONAL DRAWINGS QFN28 ............... 74
20.2 DIMENSIONAL DRAWINGS QFN32-WA ....... 76
20.3 PACKAGE CODES ........................................... 77
21 TABLE OF FIGURES ......................................... 78
22 REVISION HISTORY ....................................... 79
23 REFERENCES ...................................................... 79