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Part: PG001M
Category:
Power Management
-> PWM Controllers
Description: Parallel-to-serial Data Converter
Company: Allegro Micro Systems, Inc.
Datasheet: Download PG001M datasheet File size : 3470 kB
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Datasheet text preview:
PG001M
PARALLEL-TO-SERIAL DATA CONVERTER
The PG001M CMOS IC converts parallel-data signals from a lowcost, 8-bit microprocessor or microcontroller into a serial-data format compatible with the SLA7042M and SLA7044M power multi-chip modules to drive unipolar PWM, high-current stepper motors. The converter provides for five basic modes of operation: 1) normal, two-phase, full step (100% torque vector), 2) two-phase 'boosted' torque (141% torque vector), 3) half-step, constant torque operation (using a 2-1-2 output switching), 4) quarter-stepping utilizing ratioed currents for constant torque, and 5) microstepping (1/8th steps) for quiet, smooth, resonance-free motor performance. The PG001M is supplied in a low-cost 16-pin dual in-line plastic package. It is rated for continuous operation over the temperature range of -20°C to +85°C.
Data Sheet 26112
RESET CLOCK
1 2
V DD
16 15
CONTROL SUPPLY VECTOR CONTROL CLOCK OUT STROBE NO CONNECT. SERIAL DATA A SERIAL DATA B MONITOR
IN
PARALLEL-TO-SERIAL
CCW/CW NOT USABLE NOT USABLE MODE SELECT. .1 MODE . SELECT. 2 GROUND
3 4 5 6 7 8
CONTROL LOGIC
14
CONVERTER
13 12 11 10 9
Dwg. PK-009
ABSOLUTE MAXIMUM RATINGS Supply Voltage, VDD ........... 7.0 V Input Voltage Range, VI ....... -0.5 V to VDD + 0.5 V Input Current, II ..... ±10 mA Output Voltage Range, VO ...... -0.5 V to VDD + 0.5 V Output Current, IO .......... ±15 mA Operating Temperature Range, TA .. -20°C to +85°C Storage Temperature Range, TS ...... -40°C to +150°C
CAUTION: CMOS devices have input static protection but are susceptible to damage if exposed to extremely high static electrical charges.
FEATURES
s Intended For Use With SLA7042M or SLA7044M Microstepping, Unipolar PWM, High-Current Motor Drivers s Supports Five Stepper-Motor Operating Modes s µP-Compatible Inputs
Always order by complete part number, PG001M .
TM
PG001M PARALLEL-TO-SERIAL DATA CONVERTER
FUNCTIONAL BLOCK DIAGRAM
CONTROL SUPPLY
MODE SELECT
2
7
SET MODE SELECTOR
V DD
16
MODE SELECT 1 6
PARALLEL-TO-SERIAL
CONVERTER
LOGIC
VECTOR 15 CONTROL MONITOR
9
SEQUENCING
a b c PHASE
10 SERIAL DATA 11 SERIAL DATA
B
A NO (INTERNAL) 12 CONNECTION
13 STROBE 14 CLOCK
NOT USABLE
5 4
OUT
CCW/CW CLOCK IN
3 2 1 8
UP-DOWN COUNTER OSC.
RESET
GROUND
Dwg. FK-009A
TRUTH TABLE
PG001M Motor Excitation Full Step Inputs VC H L Half Step 1/4 Step 1/8 Step X X X MS 1 L L H L H MS 2 L L L H H 0 0% s s s SLA7042/44M Output Sequence & PWM Current 1 20% s 2 3 4 5 6 7 Motor Torque 141% 100% 100% 100% 100%
40% 55.5% 71.4% 83% s s s s s s s s
91% 100% s s s s s s
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1998, Allegro MicroSystems, Inc.
TM
PG001M PARALLEL-TO-SERIAL DATA CONVERTER
ELECTRICAL CHARACTERISTICS at TA = +25°C, VDD = 5 V (unless otherwise noted).
Characteristic Supply Voltage Output Voltage Input Current Input Voltage Symbol VDD VOH VOL IIH IIL VIH VIL Vhys fosc td(CIH-COH) td(CIL-SL) tr tf tckH tckL ci IDD
4.5 µs 0.5 µs
Test Conditions Operating IO = -3 mA IO = 3 mA VI = 5 V VI = 0 V
Min. 4.5 4.5 3.5 0
Limits Typ. Max. 5.5 4.6 0.3 1. 0 1.5 50 430 20 20 5. 0 350 0 .4 1.0 -1.0 5. 0 1. 5 100 550 10 450
Units V V V µA µA V V V MHz ns ns ns ns µs µs pF µA
Internal Oscillator Freq. Delay Time Output Switching Time CLOCKIN Pulse Width Input Capacitance Supply Current
CLKIN to CLKOUT rising edges CLKIN to STROBE falling edges CL = 15 pF, 10% to 90% CL = 15 pF, 90% to 10%
4.5 0.5
VDD = 5.5 V
CLOCK IN
100 ns
100 ns
RESET
PG001M Input Signals Timing
MODE SELECT CCW/CW
100 ns
VECTOR CONTROL
Dwg. WK-005
Others parts begin by pg
PG-1 PG-2
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