TMC8462 Datasheet • Document Revision V1.4 • 2018-May -09
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Name
Pin
Type (I,O,PU,PD) Function
EEPROM IOs
PROM_INIT
J5
O
O
Signal indicating that EEPROM has been loaded,
0 = not ready, 1 = EEPROM loaded
PROM_CLK
H4
External I2C EEPROM clock signal, use 1K pull
up resistor to 3.3V
PROM_DATA
H5
G9
I/O
External I2C EEPROM data signal, use 1k pull up
resistor to 3V3
PROM_SIZE
I
Selects between two different EEPROM sizes
since the communication protocol for EEPROM
access changes if a size > 16kBit is used (an ad-
ditional address byte is required then). 0 = up to
16kBit EEPROM, 1 = 32 kBit-4Mbit EEPROM
DC Synchronization IOs
SYNC_OUT0
D7
O
O
Distributed Clocks synchronization output 0, typ-
ically connect to MCU
SYNC_OUT1
D6
Distributed Clocks synchronization output 1, typ-
ically connect to MCU
LATCH_IN0
LATCH_IN1
C7
C6
I
I
Latch input 0 for Distributed Clocks, connect to
GND if not used.
Latch input 1 for Distributed Clocks, connect to
GND if not used.
LEDs
LED_RUN
B3
C3
D3
E3
O
O
O
O
Run Status LED, connect to green LED (Anode) 0
= LED off, 1 = LED on
LED_ERR
Error Status LED, connect to red LED (Anode) 0 =
LED off, 1 = LED on
LINK_ACT0
LINK_ACT1
Link In Port Status and Activity, connect to green
LED (Anode) 0 = LED off, 1 = LED on
Link Out Port Status and Activity, connect to
green LED (Anode) 0 = LED off, 1 = LED on
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