Philips Semiconductors
SC16C654B/654DB
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
IOW
active
t
17d
RTS
DTR
change of state
change of state
CD
CTS
DSR
t
18d
change of state
t
18d
change of state
INT
active
t
19d
active
active
IOR
active
active
t
18d
active
RI
change of state
002aaa352
Fig 17. Modem input/output timing
t
2w
EXTERNAL
CLOCK
t
3w
t
1w
002aaa112
1
f
XTAL
=
-------
t
3w
Fig 18. External clock timing
9397 750 14965
漏 Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 鈥?20 June 2005
43 of 58