L8229 datasheet(8/42 Pages) STMICROELECTRONICS

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Pin description

L8229

8/42

Note:

ESD on pin PROG1 vs. VS is guaranteed up to +2KV/-1.75KV (Human Body Model,

1500Ohm, 100pF)

PHASE2

nCS

PHASE2: Direction input control pin for Bridge 2.

nCS: Chip Select input pin for serial protocol.

VREF2

VREFDEC

VREF2

VREF2: Reference voltage input for Bridge 2.

VREFDEC: Mixed Decay Reference voltage for both

Bridges 1 and 2.

RC2

FAULT

RC2: Toff input pin for Bridge 2.

FAULT: This pin is high when a generic fault is present.

VCC

Logic and Low voltage analog Supply.

RC1

nRESET

RC1: Toff input pin for Bridge 1.

nRESET: Input pin for reset of serial port.

VREF1

VREFCOM

VREF1

VREF1: Reference voltage input for Bridge 1.

VREFCOM: Common Reference voltage input for both

Bridges 1 and 2.

PHASE1

OSC

PHASE1: Direction input control pin for Bridge 1.

OSC: Input for external oscillator used for timings.

I11

PWM2

I11: Current level control bit for Bridge 1.

PWM2: PWM input control pin for Bridge 2 when used as

a DC motor driver.

PROG2

Configuration Program pin. When used together with pin

7, it programs device into one of the four configurations

(see following Programmable Modes table).

GND

Ground.

I01

PWM1

I01: Current level control bit for Bridge 1.

PWM1: PWM input control pin for bridge 1 when used as

a DC motor driver

OUT1B

Motor Driver Bridge 1 Output B.

COMPIN1

Current Comparator input for Bridge1.

SENSE1

Motor Driver Bridge 1 Sense Resistor.

Supply voltage for output stages.

Table 1.

Pin Description (continued)

Pin N#

L6219_HI

(Pin7&18=00)

L6219_8

(Pin7&18=01)

L8229_x

(Pin7&18=10

or 11)

Function

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