sc16c852 NXP Semiconductors, sc16c852 Datasheet - Page 11

• Manufacturer Part Number: sc16c852
• Description: 2.5 V To 3.3 V Dual Uart, 5 Mbit/s Max. With 128-byte Fifos, Infrared Irda And 16 Mode Or 68 Mode Bus Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SC16C852_1
Product data sheet
6.1 UART A-B functions
6.2 Extended mode (128-byte FIFO)
The UART provides the user with the capability to bidirectionally transfer information
between an external CPU, the SC16C852 package, and an external serial device. A
logic 0 (LOW) on chip select pins CSA and/or CSB allows the user to configure, send
data, and/or receive data via UART channels A, B. Individual channel select functions are
shown in
Table 3.
H = HIGH; L = LOW.
Table 4.
H = HIGH; L = LOW.
The device is in the extended mode when any of these four registers contains any value
other than 0: FLWCNTH, FLWCNTL, TXINTLVL, RXINTLVL.
Chip Select
CSA = H, CSB = H
CSA = L
CSB = L
Chip Select
CS = H
CS = L, A3 = L
CS = L, A3 = H
Table 3
Serial port selection (Intel interface)
Serial port selection (Motorola interface)
and
Table
Function
none
UART channel A
UART channel B
Function
none
UART channel A
UART channel B
Rev. 01 — 31 August 2009
Dual UART with 128-byte FIFOs and IrDA encoder/decoder
4.
SC16C852
© NXP B.V. 2009. All rights reserved.
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