ST7263BEx datasheet(158/186 Pages) STMICROELECTRONICS

部件名	ST7263BEx

功能描述	Low speed USB 8-bit MCU family with up to 32 KB Flash/ROM, DFU capability, 8-bit ADC, WDG, timer, SCI and I²C

PDF	186 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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158 / 186 page

Electrical characteristics

ST7263Bxx

158/186

Doc ID 7516 Rev 8

Figure 74.

RESET pin

protection when LVD is disabled

13.10

Communication interface characteristics

13.10.1

USB interface

Operating conditions TA = 0 to +70 °C, VDD = 4.0 to 5.25 V unless otherwise specified.

Figure 75.

USB data signal rise and fall time

0.01

μF

EXTERNAL

RESET

CIRCUIT

USER

Required

ST72XXX

PULSE

GENERATOR

Filter

RON

VDD

WATCHDOG

INTERNAL

RESET

Table 73.

USB DC characteristics

Symbol

Parameter

Conditions

Min.

Max.

Unit

VDI

Differential input sensitivity

I(D+, D-)

0.2

V(1)

VCM

Differential common mode range

Includes VDI range

0.8

2.5

VSE

Single ended receiver threshold

0.8

2.0

VOL

Static output low

(2)of 1.5 K

Ω to 3.6 V

0.3

VOH

Static output high

(2) of 15 K

Ω to V

2.8

3.6

USBV

USBVCC: voltage level(3)

VDD=5 V

3.00

3.60

All the voltages are measured from the local ground potential.

RL is the load connected on the USB drivers.

To improve EMC performance (noise immunity), it is recommended to connect a 100nF capacitor to the USBVCC pin.

Differential

Data Lines

VSS

Crossover

points

VCRS

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