T84C5112-RKFCL datasheet(25/97 Pages) ATMEL

номер детали	T84C5112-RKFCL

подробное описание детали	8-bit Microcontroller with A/D converter

PDF	97 Pages

Scroll/Zoom	100%

производитель	ATMEL [ATMEL Corporation]

домашняя страница	http://www.atmel.com

Logo

25 / 97 page

Rev. B - November 10, 2000

Preliminary

T80C5112

Figure 7. Push-Pull Output

9.1.4. Input only Configuration

The input only configuration is a pure input with neither pull-up nor pull-down.

The input only configuration is shown in Figure 7.

Figure 8. Input only

9.2. Ports description

9.2.1. Ports P1, P3 and P4

Every output on the T80C5112 may potentially be used as a 20 mA sink LED drive output. However, there is a

maximum total output current for all ports which must not be exceeded. All ports pins of the T80C5112 have slew

rate controlled outputs. This is to limit noise generated by quickly switching output signals. The slew rate is factory

set to approximately 10 ns rise and fall times.

The inputs of each I/O port of the T80C5112 are TTL level Schmitt triggers with hysteresis.

9.2.2. Ports P0 and P2

High pin count version of the T80C5112 have standard address and data ports P0 and P2. These ports are standard C51

ports (Quasi-bidirectional I/O). The control lines are provided on the pins : ALE, PSEN, EA, Reset; RD and WR signals

are on the bits P1.1 and P1.0 .

Input

Strong

Port latch

Data

Input

Data

T84C5112-RKFCL датащи(PDF) 25 Page - ATMEL Corporation