SC16C850 datasheet(6/53 Pages) NXP

Part #	SC16C850

Description	2.5 V to 3.3 V UART, 5 Mbit/s (max.) with 128-byte FIFOs, infrared (IrDA), and 16 mode or 68 mode parallel bus interface

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Manufacturer	NXP [NXP Semiconductors]

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SC16C850_1

Product data sheet

Rev. 01 — 10 January 2008

6 of 53

NXP Semiconductors

SC16C850

2.5 V to 3.3 V UART with 128-byte FIFOs and IrDA encoder/decoder

5.2 Pin description

a. 16 mode

b. 68 mode

Fig 5.

Pin conﬁguration for HVQFN32

002aad024

SC16C850IBS

(16 mode)

Transparent top view

A2

TX

CS

A1

RX

A0

D7

INT

D6

D5

DTR

16

D4

CTS

8

17

7

18

6

19

5

20

4

21

3

22

2

23

1

24

terminal 1

index area

RTS

RESET

002aad025

SC16C850IBS

(68 mode)

Transparent top view

A2

TX

CS

A1

RX

A0

D7

IRQ

D6

D5

DTR

68

D4

CTS

8

17

7

18

6

19

5

20

4

21

3

22

2

23

1

24

terminal 1

index area

RTS

RESET

Table 2.

Pin description

Symbol

Type

Description

TFBGA36

HVQFN32

16/68

-

2

I

Bus select. Intel or Motorola bus select.

When 16/68 pin is at logic 1 or left unconnected (internally pulled-up) the

device will operate in Intel bus (16 mode) type of interface.

When 16/68 pin is at logic 0, the device will operate in Motorola bus (68 mode)

type of interface.

A0

C1

19

I

Address 0 select bit. Internal register address selection.

A1

C3

18

I

Address 1 select bit. Internal register address selection.

A2

B1

17

I

Address 2 select bit. Internal register address selection.

CD

E3

26

I

Carrier Detect (active LOW). A logic 0 on this pin indicates that a carrier has

been detected by the modem. Status can be tested by reading MSR[7].

CS

B6

8

I

Chip Select (active LOW). In 16 mode or 68 mode, this input is chip select for

the UART.

CTS

D3

24

I

Clear to Send (active LOW). A logic 0 on the CTS pin indicates the modem

or data set is ready to accept transmit data from the SC16C850. Status can be

tested by reading MSR[4].

DSR

F2

25

I

Data Set Ready (active LOW). A logic 0 on this pin indicates the modem or

data set is powered-on and is ready for data exchange with the UART. Status

can be tested by reading MSR[5].

DTR

E1

22

O

Data Terminal Ready (active LOW). A logic 0 on this pin indicates that the

SC16C850 is powered-on and ready. This pin can be controlled via the

modem control register. Writing a logic 1 to MCR[0] will set the DTR output to

logic 0, enabling the modem. This pin will be a logic 1 after writing a logic 0 to

MCR[0], or after a reset.

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Manufacturer	Part #	Datasheet	Description
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