908E626_09 Datasheet, PDF (4/44 Pages) Freescale Semiconductor, Inc – Integrated Stepper Motor Driver with Embedded MCU and LIN Serial Communication

PIN CONNECTIONS
Table 1. 908E626 PIN DEFINITIONS
A functional description of each pin can be found in the Functional Pin Description section beginning on page 14.
Die
Pin
Pin Name
Formal Name
Definition
–
MCU
14, 21, 22,
28, 33, 35,
36, 37, 39
42
NC
PTE1/ RXD
No Connect
Not connected.
Port E I /O
This pin is a special function, bidirectional I/O port pin that can is
shared with other functional modules in the MCU.
MCU
43
48
VREFL
VREFH
ADC References
These pins are the reference voltage pins for the analog-to-digital
converter (ADC).
MCU
44
47
VSSA
VDDA
ADC Supply Pins
These pins are the power supply pins for the analog-to-digital
converter.
MCU
45
46
EVSS
EVDD
MCU Power Supply These pins are the ground and power supply pins, respectively. The
Pins
MCU operates from a single power supply.
MCU
49
50
52
53
54
MCU
51
PTA4/KBD4
PTA3/KBD3
PTA2/KBD2
PTA1/KBD1
PTA0/KBD0
FLSVPP
Port A I /Os
These pins are special function, bidirectional I/O port pins that are
shared with other functional modules in the MCU.
Test Pin
For test purposes only. Do not connect in the application.
Analog
15
FGEN
Current Limitation
Frequency Input
This is the input pin for the half-bridge current limitation PWM
frequency.
Analog
16
BEMF
Back Electromagnetic This pin gives the user information about back electromagnetic force
Force Output
(BEMF).
Analog
17
RST_A
Internal Reset
This pin is the bidirectional reset pin of the analog die.
Analog
18
IRQ_A
Internal Interrupt
Output
This pin is the interrupt output pin of the analog die indicating errors
or wake-up events.
Analog
19
SS
Slave Select
This pin is the SPI slave select pin for the analog chip.
Analog
20
LIN
LIN Bus
This pin represents the single-wire bus transmitter and receiver.
Analog
23
26
29
32
Analog
24
27
31
Analog
25
30
Analog
34
HB1
HB2
HB3
HB4
VSUP1
VSUP2
VSUP3
GND1
GND2
HVDD
Half-bridge Outputs
This device includes power MOSFETs configured as four half-bridge
driver outputs. These outputs may be configured for step motor
drivers, DC motor drivers, or as high side and low side switches.
Power Supply Pins These pins are device power supply pins.
Power Ground Pins These pins are device power ground connections.
Switchable V_DD
Output
This pin is a switchable V_DD output for driving resistive loads
requiring a regulated 5.0V supply; e.g., 3 pin Hall-effect sensors.
Analog
38
VDD
Voltage Regulator
Output
The + 5.0V voltage regulator output pin is intended to supply the
embedded microcontroller.
Analog
40
VSS
Voltage Regulator
Ground
Ground pin for the connection of all non-power ground connections
(microcontroller and sensors).
Analog
41
–
EP
RXD
Exposed Pad
LIN Transceiver
Output
Exposed Pad
This pin is the output of LIN transceiver.
The exposed pad pin on the bottom side of the package conducts
heat from the chip to the PCB board.
908E626
4
Analog Integrated Circuit Device Data
Freescale Semiconductor