Universal Remote Control R7 - SPECS SHEET Manual do Utilizador descarregar pdf (Página 8)

S3F80KB_AN_REV 0.00 (Preliminary Spec) IR REMOTE CONTROLLER

2.3 PIN ASSIGNMENTS

Table 1. Pin Configuration

Pin Names Pin Type Pin Description 44 Pin No. Shared Functions

P0.0−P0.3

I/O

Input mode

Pull-up resistors enabled

Ext. INT enabled

30−33

Ext. INT

(INT0−INT3)

(INT4)

P1.0−P1.3

I/O

Open drain output mode

16,20−22 −

P3.1 O

REM

−

P3.3 I

T1CAPT

−

XOUT, XIN

−

System clock input and output pins

7,8

−

nRESET I System reset signal input pin and back-up

mode input.

−

VDD

−

Power supply input pin

−

VSS

−

Ground pin

−

2.4 USED BLOCK

Table 2. Block Description

Block Description

Counter A Counter A is used to generate a Carrier frequency for Timer1's clock source and carry a carrier

frequency when IR signal is transmitted through REM port.

Timer 1 In transmission mode, Timer1 use Carrier frequency to clock source and calcurates pulse

distance to transmit leader, bit 0 and 1. In reception mode, Timer1 is used to calcurates a

received IR signal pulse distance.

Timer 0 When reception mode, Timer0 countes learning mode operating time.

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 30 31

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