ST10F269Z2QX View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST10F269Z2QX

16-BIT MCU WITH MAC UNIT, 256K BYTE FLASH MEMORY AND 12K BYTE RAM

STMicroelectronics 

ST10F269Z2Qx

12.6 - Port 3

If this 15-bit port is used for general purpose I/O,

the direction of each line can be configured by the

corresponding direction register DP3. Most port

lines can be switched into push-pull or open drain

mode by the open drain control register ODP2

(pins P3.15, P3.14 and P3.12 do not support open

drain mode).

Due to pin limitations register bit P3.14 is not

connected to an output pin.

P3 (FFC4h / E2h)

SFR

Reset Value: 0000h

15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

0

P3.15 - P3.13 P3.12 P3.11 P3.10 P3.9 P3.8 P3.7 P3.6 P3.5 P3.4 P3.3 P3.2 P3.1 P3.0

RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW

P3.y

Port Data Register P3 Bit y

DP3 (FFC6h / E3h)

SFR

Reset Value: 0000h

15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

0

DP3 - DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3 DP3

.15

.13 .12 .11 .10 .9 .8 .7 .6 .5 .4 .3 .2 .1 .0

RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW

DP3.y

Port Direction Register DP3 Bit y

DP3.y = 0: Port line P3.y is an input (high-impedance)

DP3.y = 1: Port line P3.y is an output

ODP3 (F1C6h / E3h)

ESFR

Reset Value: 0000h

15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

0

-

- ODP3 - ODP3 ODP3 ODP3 ODP3 ODP3 ODP3 ODP3 ODP3 ODP3 ODP3 ODP3 ODP3

.13

.11 .10 .9 .8 .7 .6 .5 .4 .3 .2 .1 .0

RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW

ODP3.y

Port 3 Open Drain Control Register Bit y

ODP3.y = 0: Port line P3.y output driver in push-pull mode

ODP3.y = 1: Port line P3.y output driver in open drain mode

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