STA1052 datasheet(7/14 Pages) STMICROELECTRONICS

7 / 14 page

STA1052

Pin description

7/14

FE_B

OPU B input

analog in

FE_D

OPU D input

analog in

FE_E

OPU E input

analog in

FE_F

OPU F input

analog in

FE_VDDA33S

3.3 V analog for servo channels/ 3.3 V

for AFE pad ring (decoupling cap to

Vssa)

VDD

FE_VDDPAD1

3.3V for AFE pad ring

VDD

FE_ADCIN1

General purpose ADC input 1

analog in

FE_ADCIN2

General purpose ADC input 2

analog in

FE_VREF_ADC

General purpose ADC Vtop reference

output

analog out

FE_VREF

External Vref pickup (decoupling cap 1

nF)

analog out

FE_VDDA33R

Analog 3.3 V for bandgap

VDD

FE_CEXT

External cap for bandgap (1 nF)

analog

FE_REXT

External res for bandgap (25 kOhm)

analog

FE_VSSA33R

Analog ground bandgap

Vss

FE_MD_LAS

Laser driver input from monitor diode

analog in

FE_CAP_LAS

Laser driver compensation cap (30 nF)

analog

FE_LD_LAS

First laser driver output

analog out

FE_LD1_LAS

Second laser driver output

analog out

FE_VDDPAD2

3.3 V for AFE pad ring

VDD

FE_VDDA33T

Analog 3.3 V for test buffer

VDD

FE_TESTP

Test buffer positive output

analog out

FE_TESTN

Test buffer negative output

analog out

FE_VSSA33T

Analog ground test buffer

VSS

FE_VDDA18AD

Analog 1.8 V ADC

VDD

FE_VSSA18AD

Analog ground ADC

VSS

Core VSS ground

VSS

RESETN

Hardware reset input (pull-up)

in, schmitt, 3.3 V

TESTEN

Test enable signal (active low)

in, 3.3V

FFSR

Focusing actuator control signal output -

PDM

Out, 3.3 V, 4 mA

REFFSR

Clock (50% duty cycle) for actuator

PDM reference

Out, 3.3 V, 2 mA

Table 2.

Pin List (continued)

N°

Name

Description

Pin type

LQFP144

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