AT87C5111-ICSIL datasheet(20/86 Pages) ATMEL

tên linh kiện	AT87C5111-ICSIL

Giải thích chi tiết về linh kiện	Low Pin Count 8-bit Microcontroller with A/D Converter

PDF	86 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

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AT8xC5111

4190A–8051–11/02

Figure 3. Push-pull Output

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 5.

Figure 4. Input only

Ports Description

Ports P1, P3 and P4

Every output on the AT8xC5111 may potentially be used as a 20 mA sink LED drive out-

put. However, there is a maximum total output current for all ports which must not be

exceeded. All port pins of the AT8xC5111 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 AT8xC5111 are TTL level Schmitt triggers with

hysteresis.

Ports P0 and P2

The high pin-count version of the AT8xC5111 has standard address and data ports P0

and P2. These ports are standard C51 ports (Quasi bi-directional 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

AT87C5111-ICSIL bảng dữ liệu(PDF) 20 Page - ATMEL Corporation