Datasheet

TMC220X, TMC222X DATASHEET (Rev. 1.02 / 2017-MAY-16) 26
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GENERAL CONFIGURATION REGISTERS (0X00…0X0F)
R/W
Addr
n
Register
Description / bit names
4
DIAG (TMC220x), ENN (TMC222x)
5
STEP (TMC222x)
6
PDN_UART (TMC220x), MS1 (TMC222x)
7
STEP (TMC220x), MS2 (TMC222x)
8
SEL_A: Driver type
1: TMC220x
0: TMC222x
9
DIR (TMC220x)
31..
24
VERSION: 0x20=first version of the IC
Identical numbers mean full digital compatibility.
RW
0x07
5+2
FACTORY_
CONF
4..0
FCLKTRIM (Reset default: OTP)
0…31: Lowest to highest clock frequency. Check at
charge pump output. The frequency span is not
guaranteed, but it is tested, that tuning to 12MHz
internal clock is possible. The devices come preset to
12MHz clock frequency by OTP programming.
9..8
OTTRIM (Default: OTP)
%00: OT=143°C, OTPW=120°C
%01: OT=150°C, OTPW=120°C
%10: OT=150°C, OTPW=143°C
%11: OT=157°C, OTPW=143°C