ST52T301 datasheet(36/100 Pages) STMICROELECTRONICS

부품명	ST52T301

상세설명	8-Bit OTP/EPROM DuaLogic] MCUs WITH ADC, UART, TIMER, TRIAC & PWM DRIVER

PDF	100 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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36 / 100 page

8 I/O PORT

ST52x301 is provided with dedicated lines for

input/output.These lines, grouped into an 8-bit I/O

Port P(0:7), can be programmed to provide parallel

input/output with a handshake line (READY) to

carry data in/out.

The I/O Port is not able to perform operations on

the single bit, and the communication cannot be

performed at the same time in input and output.

It is possible to program the parallel port direction

by using the register REG_CONF0 in order to set

which bits are in input and which are in output.

T he

por t

has

i n t er nal

r egi st er

(PERIPH_REG_2) dedicated to hold output data

coming from the Register File through an LDPR

instruction.

Input data are automaticallystored in the IN_PORT

P8 pin is a digital output line available directly

connected to the OUT bit of the REG_CONF1;

then it can be set by using a LDCF instruction.

(see table 8.2 and Figure 8.8)

PERIPH_REG_2(i)

P(0:7)

I/O PIN

TTL

CMOS

IO(i)

INP_PORT(i)

TRISTATE

REG_CONF0(i)

OUTPUT PIN

REG_CONF1(0)

OUT

Figure 8.1.

Figure 8.2.

36/99

ST52T301/E301

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