ST7262XXX datasheet(34/139 Pages) STMICROELECTRONICS

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ST7262xxx

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Doc ID 6996 Rev 5

I/O PORTS (Cont’d)

9.2.5 Port A

Table 9. Port A Description

Figure 26. PA[7:0] Configuration

PORT A

I/O

Alternate Function

Input*

Output

Signal

Condition

PA0

floating

push-pull

USBOE

USBOE = 1 (MISC)

IT1 Schmitt triggered input

IT1E = 1 (ITRFRE1)

AIN0 (ADC)

CS[2:0] = 000 (ADCCSR)

PA1

floating

push-pull

IT2 Schmitt triggered input

IT2E = 1 (ITRFRE1)

AIN1 (ADC)

CS[2:0] = 001 (ADCCSR)

PA2

floating

push-pull

IT3 Schmitt triggered input

IT3E = 1 (ITRFRE1)

AIN2 (ADC)

CS[2:0] = 010 (ADCCSR)

PA3

floating

push-pull

IT4 Schmitt triggered input

IT4E = 1 (ITRFRE1)

AIN3 (ADC)

CS[2:0] = 011 (ADCCSR)

PA4

floating

push-pull

AIN4 (ADC)

CS[2:0] = 100 (ADCCSR)

PA5

floating

push-pull

AIN5 (ADC)

CS[2:0] = 101 (ADCCSR)

PA6

floating

push-pull

AIN6 (ADC)

CS[2:0] = 110 (ADCCSR)

PA7

floating

push-pull

AIN7 (ADC)

CS[2:0] = 111 (ADCCSR)

*Reset State

DDR

LATCH

DR SEL

DDR SEL

VDD

PAD

ANALOG

SWITCH

ANALOG ENABLE

(ADC)

ALTERNATE ENABLE

DIGITAL ENABLE

ALTERNATE ENABLE

ALTERNATE

ALTERNATE INPUT

OUTPUT

P-BUFFER

N-BUFFER

VSS

VDD

DIODES

Obsolete

Product(s)

- Obsolete

Product(s)

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