ST72141K View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST72141K Datasheet PDF : 132 Pages
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ST72141K
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST72141K devices are members of the ST7
microcontroller family designed specifically for mo-
tor control applications and including A/D conver-
sion and SPI interface capabilities. They include
an on-chip Moter Controller peripheral for control
of electric brushless moters with or without sen-
sors. An example application, for 6-step control of
a Permanent Magnet DC motor, is shown in Figure
1.
The ST72141K devices are based on a common
industry-standard 8-bit core, featuring an en-
hanced instruction set.
Under software control, they can be placed in
WAIT, SLOW, or HALT mode, reducing power
consumption when the application is in idle or
standby state.
The enhanced instruction set and addressing
modes of the ST7 offer both power and flexibility to
software developers, enabling the design of highly
efficient and compact application code. In addition
to standard 8-bit data management, all ST7 micro-
controllers feature true bit manipulation, 8x8 un-
signed multiplication and indirect addressing
modes.
Figure 2. Device Block Diagram
Figure 1. Example of a 6-step-controlled Motor
ST7
MCO5-0
6
MCIB
MTC
MCIA
MCIC
300V
0
2
4
I1
I4
B
I6
A
I5
I3
I2 C
3
5
1
Net
Step
Σ1
Σ2
Σ3
Σ4
Σ5
Σ6
Σ1
Σ2
Σ3
0
1
2
3
4
5
A 300 V
150 V
0
30 0V
B 15 0V
0
30 0V
C 15 0V
0
OSC1
OSC2
VDD
VSS
RES ET
Internal
CLOCK
OSC DIV
POWER
SUPP LY
LVD
CONTROL
8-BIT CORE
ALU
8K-EPROM
256b-RAM
PORT A
8-BIT ADC
TIMER B
TIMER A
MOTOR CTRL
PORT B
SPI
WAT CHDOG
PA 7:0
(8-BI T)
OC1A
MCO5:0
MCIA :C
MCES
MCCF I
PB 5:0
(6-BI T)
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