SC16C752 datasheet(4/47 Pages) PHILIPS

4 / 47 page

Philips Semiconductors

SC16C752

Dual UART with 64-byte FIFO

Product data

Rev. 04 — 20 June 2003

4 of 47

9397 750 11635

Pinning information

5.1 Pinning

5.2 Pin description

Fig 2.

Pin conﬁguration.

SC16C752IB48

002aaa224

RXB

RXA

TXRDYB

TXA

TXB

OPB

CSA

CSB

RESET

DTRB

DTRA

RTSA

OPA

RXRDYA

INTA

INTB

Table 2:

Pin description

Symbol

Type

Description

Address 0 select bit. Internal registers address selection.

Address 1 select bit. Internal registers address selection.

Address 2 select bit. Internal registers address selection.

CDA, CDB

40, 16

Carrier Detect (Active-LOW). These inputs are associated with individual UART

channels A and B. A logic LOW on these pins indicates that a carrier has been

detected by the modem for that channel. The state of these inputs is reﬂected in the

modem status register (MSR).

CSA, CSB

10, 11

Chip Select (Active-LOW). These pins enable data transfers between the user CPU

and the SC16C752 for the channel(s) addressed. Individual UART sections (A, B) are

addressed by providing a logic LOW on the respective CSA and CSB pins.

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