ST7263B datasheet(27/132 Pages) STMICROELECTRONICS

部件名	ST7263B

功能描述	LOW SPEED USB 8-BIT MCU FAMILY WITH FLASH/ROM, UP TO 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I²C

PDF	132 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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27 / 132 page

ST7263B

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I/O PORTS (Cont’d)

9.3.1 Port A

Table 9. Port A0, A3, A4, A5, A6, A7 Description

Figure 19. PA0, PA3, PA4, PA5, PA6, PA7 Configuration

PORT A

I / O

Alternate Function

Input*

Output

Signal

Condition

PA0

with pull-up

push-pull

MCO (Main Clock Output)

MCO = 1 (MISCR)

PA3

with pull-up

push-pull

Timer EXTCLK

CC1 =1

CC0 = 1 (Timer CR2)

PA4

with pull-up

push-pull

Timer ICAP1

IT1 Schmitt triggered input

IT1E = 1 (ITIFRE)

PA5

with pull-up

push-pull

Timer ICAP2

IT2 Schmitt triggered input

IT2E = 1 (ITIFRE)

PA6

with pull-up

push-pull

Timer OCMP1

OC1E = 1

IT3 Schmitt triggered input

IT3E = 1 (ITIFRE)

PA7

with pull-up

push-pull

Timer OCMP2

OC2E = 1

IT4 Schmitt triggered input

IT4E = 1 (ITIFRE)

*Reset State

DDR

LATCH

DR SEL

DDR SEL

VDD

PAD

ALTERNATE ENABLE

ALTERNATE

ALTERNATE INPUT

PULL-UP

OUTPUT

P-BUFFER

N-BUFFER

CMOS SCHMITT TRIGGER

VSS

VDD

DIODES

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