XRT16C854 Datasheet, PDF (8/54 Pages) Exar Corporation – 2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO

XR16C854/854D
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
xr
REV. 3.0.1
Pin Description
NAME
64-LQFP
PIN #
68-PLCC
PIN#
100-QFP
PIN #
TYPE
DESCRIPTION
N.C.
-
-
1, 2, 3, 4,
26, 27,
28, 29,
30, 51,
52, 53,
54, 55,
77, 78,
79, 80
No Connection. These pins are not used in either the Intel or
Motorola bus modes.
Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain.
Factory Test Mode
If the IOR#, IOW# and CS# pins are all asserted (at a logic 0) simultaneously, the 854 will enter a Factory Test
Mode. The 854 is not operational in this mode and will exit this mode only upon a power cycle.
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