ST92141 datasheet(10/179 Pages) STMICROELECTRONICS

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ST92141 - GENERAL DESCRIPTION

Table 1. Power Supply Pins

Table 2. Primary Function pins

Name

Function

VPP

Programming voltage for

EPROM/OTP devices. Must be

connected to VSS in user mode.

VDD

Main power supply voltage (5V

10% (2 pins internally connected)

VSS

Digital Circuit Ground (2 pins in-

ternally connected)

AVDD

Analog VDD of the Analog to Digit-

al Converter

910

AVSS

Analog VSS of the Analog to Digit-

al Converter

Name

Function

TACHO

Signal input from a tachogenera-

tor to the IMC controller for

measuring the rotor speed

U-phase PWM output signal

V-phase PWM output signal

W-phase PWM output signal

The complemented UH, VH, WH

output signals with added dead

time to avoid crossover conduc-

tion from the power driver

RESET

Reset (input, active low). The

ST9+ is initialised by the Reset

signal. With the deactivation of

RESET, program execution be-

gins from the memory location

pointed to by the vector con-

tained in memory locations 00h

and 01h

OSCIN

OSCIN is the input of the oscilla-

tor inverter and internal clock

generator. OSCIN and OSCOUT

connect a parallel-resonant crys-

tal (3 to 5 MHz), or an external

source to the on-chip clock oscil-

lator and buffer

OSCOUT

OSCOUT is the output of the os-

cillator inverter

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