ST72589BW datasheet(6/158 Pages) STMICROELECTRONICS

6 / 158 page

ST72589BW, ST72389BW

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PIN DESCRIPTION (Cont’d)

Legend / Abbreviations:

Type:

I = input, O = output, S = supply, CK = Clock

Output level:

LCD = VLCD, VLCD3/4, VLCD1/2, VLCD1/4, or GLCD level.

Input level:

C = CMOS 0.3VDD/0.7VDD

Port configuration capabilities:

– Input:

float = floating, wpu = weak pull-up, int = interrupt, ana = analog

– Output:

OD = open drain, T = true open drain, PP = push-pull

Note: Reset configuration of each pin is bold.

Table 1. Device Pin Description

Pin n°

Pin Name

Level

Port

Main func

tion

(after

reset)

Alternate function

Input

Output

1 ... 16

S45 ... S60

LCD

LCD Segment Analog Outputs

GLCD

LCD Ground Reference Voltage

VLCD1/4

LCD Supply Reference Voltage

VLCD1/2

VLCD3/4

VLCD

VDDA

Analog Power Supply Voltage

AIN0

ADC Analog Input 0

AIN1

ADC Analog Input 1

AIN2

ADC Analog Input 2

AIN3

ADC Analog Input 3

AIN4

ADC Analog Input 4

VSSA

Analog Ground Voltage

PWM0* or NC

Pulse Width Modulator output 0*

PWM1*or NC

Pulse Width Modulator output 1*

PWM2* or NC

Pulse Width Modulator output 2*

PWM3* or NC

Pulse Width Modulator output 3*

RESET

I/O

Top priority non maskable interrupt.

VPP

Must be tied low in user mode. In the pro-

gramming mode when available, this pin

acts as the programming voltage input

VPP.

VDD_1

Digital Main Supply Voltage

OSC1

These pins connect a parallel-resonant

crystal or an external source to the on-chip

main oscillator.

OSC2

VSS_1

Digital Ground Voltage

PA0

I/O

EI1

Port A0

PA1

I/O

Port A1

PA2

I/O

Port A2

PA3

I/O

Port A3

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