ST7261 datasheet(27/80 Pages) STMICROELECTRONICS

部件名	ST7261

功能描述	LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, ROM MEMORY, LVD, WDG, TIMER

PDF	80 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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27 / 80 page

ST7261

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I/O PORTS (Cont’d)

8.2.6 Port B

Table 9. Port B Description

Figure 23. Port B Configuration

PORT B

I/O

Alternate Function

Input*

Output

Signal

Condition

PB0

floating

push-pull (high sink)

MCO (Main Clock Output)

MCO = 1 (MISCR)

PB1

floating

push-pull (high sink)

PB2

floating

push-pull (high sink)

PB3

floating

push-pull (high sink)

PB4

floating

push-pull (high sink)

IT5 Schmitt triggered input

IT5E = 1 (ITRFRE1)

PB5

floating

push-pull (high sink)

IT6 Schmitt triggered input

IT6E = 1 (ITRFRE1)

PB6

floating

push-pull (high sink)

IT7 Schmitt triggered input

IT7E = 1 (ITRFRE1)

PB7

floating

push-pull (high sink)

IT8 Schmitt triggered input

IT8E = 1 (ITRFRE1)

*Reset State

DDR

LATCH

DR SEL

DDR SEL

VDD

PAD

ALTERNATE ENABLE

ALTERNATE

ALTERNATE INPUT

OUTPUT

P-BUFFER

N-BUFFER

CMOS SCHMITT TRIGGER

VSS

VDD

DIODES

ST7261 数据表(PDF) 27 Page - STMicroelectronics

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