AT89LP213 datasheet(23/98 Pages) ATMEL

23 / 98 page

3538D–MICRO–10/09

AT89LP213/214

13. I/O Ports

The AT89LP213/214 can be configured for between 9 and 12 I/O pins. The exact number of I/O

pins available depends on the clock and reset options as shown in Table 13-1. All port pins are

5V tolerant as inputs, that is they can be pulled up or driven to 5.5V even when operating at a

lower V

CC such as 3V.

Table 12-4.

IPH

– Interrupt Priority High Register

IPH = B7H

Reset Value = X000 0000B

Not Bit Addressable

–

PGH

PSH

PT1H

PX1H

PT0H

PX0H

Bit

543

Symbol

Function

PGH

General-purpose Interrupt Priority High

PSH

Serial Port Interrupt Priority High

PT1H

Timer 1 Interrupt Priority High

PX1H

External Interrupt 1 Priority High

PT0H

Timer 0 Interrupt Priority High

PX0H

External Interrupt 0 Priority High

Table 13-1.

I/O Pin Configurations

Clock Source

Reset Option

Number of I/O Pins

External Crystal or Resonator

External RST Pin

No external reset

External Clock

External RST Pin

No external reset

Internal RC Oscillator

External RST Pin

No external reset

AT89LP213 Datasheet(PDF) 23 Page - ATMEL Corporation

AT89LP213 Datasheet(HTML) 23 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98

Datasheet Download

Link URL