Electronic Components Datasheet Search |
|
P89LPC920 Datasheet(PDF) 7 Page - NXP Semiconductors |
|
P89LPC920 Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 45 page Philips Semiconductors P89LPC920/921/922 8-bit microcontrollers with two-clock 80C51 core Product data Rev. 06 — 21 November 2003 7 of 45 9397 750 12285 © Koninklijke Philips Electronics N.V. 2003. All rights reserved. P1.0 - P1.7 12, 11, 10, 9, 8, 4, 3, 2 I/O, I [1] Port 1: Port 1 is an 8-bit I/O port with a user-configurable output type, except for three pins as noted below. During reset Port 1 latches are configured in the input only mode with the internal pull-up disabled. The operation of the configurable Port 1 pins as inputs and outputs depends upon the port configuration selected. Each of the configurable port pins are programmed independently. Refer to Section 8.12.1 “Port configurations” and Table 8 “DC electrical characteristics” for details. P1.2 - P1.3 are open drain when used as outputs. P1.5 is input only. All pins have Schmitt triggered inputs. Port 1 also provides various special functions as described below: 12 I/O P1.0 — Port 1 bit 0. O TXD — Transmitter output for the serial port. 11 I/O P1.1 — Port 1 bit 1. I RXD — Receiver input for the serial port. 10 I/O P1.2 — Port 1 bit 2 (open-drain when used as output). I/O T0 — Timer/counter 0 external count input or overflow output (open-drain when used as output). I/O SCL — I2C serial clock input/output. 9 I/O P1.3 — Port 1 bit 3 (open-drain when used as output). I INT0 — External interrupt 0 input. I/O SDA — I2C serial data input/output. 8 I/O P1.4 — Port 1 bit 4. I INT1 — External interrupt 1 input. 4I P1.5 — Port 1 bit 5 (input only). I RST — External Reset input (if selected via FLASH configuration). A LOW on this pin resets the microcontroller, causing I/O ports and peripherals to take on their default states, and the processor begins execution at address 0. 3 I/O P1.6 — Port 1 bit 6. 2 I/O P1.7 — Port 1 bit 7. Table 3: Pin description…continued Symbol Pin Type Description |
Similar Part No. - P89LPC920 |
|
Similar Description - P89LPC920 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |