Interface Timing Diagrams

Copyright WJ Communications 2007. Subject to change without notice.

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Next Generation RFID Reader Module

Based on WJC200 Gen2 RFID reader chipset

WJ Communications

www.wj.com

04/03/2007

Signal

Name

Description

Minimum Time

(microseconds)

RESET pulse width

800

Delay between RESET

and the start of TX/RX

communications

400

SET_FW_UART

Delay between RESET

and the start of new

firmware download

3000 (3 ms)

Delay between power-

on via WJM_EN and the

start of TX/RX commu-

nications

3000 (3 ms)

Delay between return

from power-save state

(BL/PD) and the start of

TX/RX communications

400

Interface Timing