SPMD250STP STMicroelectronics, SPMD250STP Datasheet - Page 9

• Manufacturer Part Number: SPMD250STP
• Description: MOD STEPPER MOTOR DRV 2.5A BIPO
• Manufacturer: STMicroelectronics
• Series: EASY POWER™r
• Type: Stepper Motor Driverr

Specifications of SPMD250STP

• Motor Type: Stepper, Bipolar
• Number Of Motors: 1
• Voltage - Output: 40V
• Voltage - Logic Supply: 4.5 V ~ 5.5 V
• Current - Output: 2.5A
• Transistor Type: MOSFET
• Termination Style: PC Pin
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 12V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 40V
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 5 V
• Mounting Style: SMD/SMT
• For Use With: 497-10050 - BOARD EVAL SPMD250497-9011 - DEMO SYSTEM BASED ON SPMD250STP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8416

SPMD250STP
Table 4.
N°
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
CW/CCW
Oscillator
Half/Full
Control
Enable
GND1
GND2
Name
Home
Stepcl
Reset
Sync
Ioset
Vss
Pin description
Vs
D
C
B
A
Return path for the logic signals and 5 V supply.
Chopper oscillator output. Several modules can be synchronized by
connecting together all Sync pins. This pin can be used as the input for an
external clock source.
Asynchronous reset input. An active low pulse on this input preset the internal
logic to the initial state (ABCD = 0101).
Half/full step selection input. When high or unconnected the half step operation
is selected.
When high, this output indicates that the internal counter is in its initial state
(ABCD = 0101). This signal may be used in conjunction with a mechanical
switch to ground or with open collector output of an optical detector to be used
as a system home detector.
The motor is moved one step on the rising edge of this signal.
Direction control input. When high or unconnected clockwise rotation is
selected. Physical direction of motor rotation depends also on windings
connection.
The chopper oscillator timing, internally fixed at 17 kHz, can be modified by
connecting a resistor between this pin and Vss or a capacitor between this pin
and Gnd1. The oscillator input must be grounded when the unit is externally
synchronized.
Phase current setting input. A resistor connected between this pin and Gnd1 or
Vss, allows the factory set phase current value (2 A for SPMD250STP) to be
changed.
Logic input that allows the phase current decay mode selection. When high or
unconnected the slow decay is selected.
Module enable input. When low this input floats the outputs enabling the
manual positioning of the motor. Must be LOW during power-up and down
sequence, HIGH during normal operation.
5 V supply input. Maximum voltage must not exceed 7 V.
Return path for the power section.
D output.
C output.
B output.
A output.
Module and motor supply voltage. Maximum voltage must not exceed the
specified values.
Doc ID 14350 Rev 2
Function
Pin connection
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