a6402
®
Universal Asynchronous
Receiver/Transmitter
Data Sheet
September 1996, ver. 1
Features
s
s
s
s
s
s
s
a6402
MegaCore function implementing a universal asynchronous
receiver/transmitter (UART)
Optimized for FLEX
®
and MAX
®
architectures
Uses approximately 162 FLEX logic elements (LEs)
Programmable word length, stop bits, and parity
Full duplex operation
Includes status flags for parity, framing, and overrun errors
Functionally based on the Harris HD-6402 device, except as noted in
the
“Variations & Clarifications” section on page 63
General
Description
The
a6402
MegaCore function implements a universal asynchronous
receiver/transmitter (UART), which provides an interface between a
microprocessor and a serial communications channel. See
Figure 1.
Figure 1. a6402 Symbol
A6402
cls1
cls2
crl
ndrr
epe
mr
pi
rrc
rri
sbs
ntbrl
tbr[7..0]
trc
dr
fe
oe
pe
rbr[7..0]
tbre
tre
tro
Altera Corporation
A-DS-A6402-01
57
ALTERA [ ALTERA CORPORATION ]
