STR71XF datasheet(22/49 Pages) STMICROELECTRONICS

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STR71xF - INTRODUCTION

22/49

G1 TEST

Reserved, must be forced to ground.

V33IO-PLL

Supply voltage for digital I/O circuitry and for PLL refer-

ence

VSSIO-PLL

Ground voltage for digital I/O circuitry and for PLL ref-

erence

Reference clock input

P0.15/WAKE-

Ipu TT X4mA

Port

0.15

Wakeup from Standby mode input.

G3 RTCXTI

Realtime Clock input and input of 32 kHz oscillator am-

plifier circuit

RTCXTO

Output of 32 kHz oscillator amplifier circuit

STDBY

I/O

4mA X

Input: Hardware Standby mode entry input active low.

Caution: External pull-up to V33 required to select nor-

mal mode.

Output: Standby mode active low output following Soft-

ware Standby mode entry.

Note: In Standby mode all pins are in high impedance

except those marked Active in Stdby

G4 RSTIN

ICT

X Reset input

VSSBKP

X Stabilisation for low power voltage regulator.

V18BKP

Stabilisation for low power voltage regulator. Requires

external capacitors of at least 1µF between V18BKP and

VSS18BKP. See Figure 5.

Note: If the low power voltage regulator is bypassed,

this pin can be connected to an external 1.8V supply.

G5 V18

Stabilisation for main voltage regulator. Requires exter-

nal capacitors of at least 10µF + 33nF between V18 and

VSS18. See Figure 5.

VSS18

Stabilisation for main voltage regulator.

VDDA

Supply voltage for A/D Converter

G6 VSSA

Ground voltage for A/D Converter

P1.0/T3.OC-

MPB/AIN.0

I/O pu

4mA X

Port 1.0

Timer 3: Output

Compare B

ADC: Analog input 0

P1.1/T3.ICA-

PA/T3.EXT-

CLK/AIN.1

I/O pu

4mA X

Port 1.1

Timer 3: Input

Capture A or Ex-

ternal Clock input

ADC: Analog input 1

P1.2/T3.OCM-

PA/AIN.2

I/O pu

4mA X

Port 1.2

Timer 3: Output

Compare A

ADC: Analog input 2

P1.3/

T3.ICAPB/

AIN.3

I/O pu

4mA X

Port 1.3

Timer 3: Input

Capture B

ADC: Analog input 3

Table 6. STR711/STR712/STR715 Pin Description

Pin n°

Pin Name

Input

Output

Main

function

(after

reset)

Alternate function

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