SC16C750 Philips Semiconductors, SC16C750 Datasheet - Page 8

• Manufacturer Part Number: SC16C750
• Description: Universal Asynchronous Receiver/Transmitter (UART) with 64-byte FIFO
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Table 2:
[1]
9397 750 11623
Product data
Symbol
TXRDY
V
V
IOW, IOW
XTAL1
XTAL2
CC
SS
In sleep mode, XTAL2 is left floating.
[1]
Pin description
Pin
PLCC44 LQFP64
27
44
22
20, 21
18
19
13
40
8
4, 6
1
2
…continued
Type
O
Power 2.5 V, 3 V or 5 V supply voltage.
Power Ground voltage.
I
I
O
Description
Transmitter ready. Transmitter DMA signaling is available with TXRDY.
When operating in the FIFO mode, one of two types of DMA signaling can
be selected using FCR[3]. When operating in the 16C450 mode, only DMA
mode 0 is allowed. Mode 0 supports single-transfer DMA in which a transfer
is made between CPU bus cycles. Mode 1 supports multi-transfer DMA in
which multiple transfers are made continuously until the transmit FIFO has
been filled.
Write inputs. When either IOW or IOW is active (LOW or HIGH,
respectively) and while the UART is selected, the CPU is allowed to write
control words or data into a selected UART register. Only one of these
inputs is required to transfer data during a write operation; the other input
should be tied to its inactive level (i.e., IOW tied LOW or IOW tied HIGH).
Crystal connection or External clock input.
Crystal connection or the inversion of XTAL1 if XTAL1 is driven.
Rev. 04 — 20 June 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
UART with 64-byte FIFO
SC16C750
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