ARM7 datasheet(32/38 Pages) PHILIPS

Part #	ARM7

Description	Single-chip 16-bit/32-bit microcontrollers; up to 512 kB flash with ISP/IAP, USB 2.0 full-speed device, 10-bit ADC and DAC

PDF	38 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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32 / 38 page

9397 750 14985

Preliminary data sheet

Rev. 01 — 3 October 2005

32 of 38

Philips Semiconductors

LPC2141/42/44/46/48

Single-chip 16-bit/32-bit microcontrollers

9.1 Timing

10. Application information

10.1 Suggested USB interface solutions

Fig 8.

External clock timing

tCHCL

tCLCX

tCHCX

Tcy(CLK)

tCLCH

002aaa907

0.2VDD + 0.9 V

0.2VDD − 0.1 V

VDD − 0.5 V

0.45 V

Fig 9.

Differential data-to-EOP transition skew and EOP width

002aab561

tPERIOD

differential

data lines

crossover point

source EOP width: tFEOPT

receiver EOP width: tEOPR1, tEOPR2

crossover point

extended

differential data to

SEO/EOP skew

n * tPERIOD + tFDEOP

Fig 10. LPC2141/42/44/46/48 USB interface using the CONNECT function on pin 17

LPC2142/2148

USB-B

connector

CONNECT

soft-connect switch

−

VBUS

VSS

VDD

1.5 k

Ω

RS = 33 Ω

002aab563

RS = 33 Ω

ARM7 Datasheet(PDF) 32 Page - NXP Semiconductors

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