參數(shù)資料
型號(hào): EM6517
廠商: Electronic Theatre Controls, Inc.
元件分類: 4位微控制器
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述: 4位單片機(jī)的小型通用紅外遙控器
文件頁(yè)數(shù): 13/66頁(yè)
文件大?。?/td> 762K
代理商: EM6517
EM6517
FOR ENGINEERING ONLY
EM Microelectronic-Marin SA, 09/99, Rev. A/277
13
7
Input and Output ports
The EM6517-1 has one input port and two bi-directional ports.
7.1 Ports overview
Table 7.1.1 Input and Output Ports Overview
Port
Mode
Mask(M:) or Register(R:)
Option
PA
[3:0]
M: Pull-down (default)
R: Pull enabling
R: Debouncer or direct
input for IRQ requests
and Counter
R: + or - for IRQ-edge
and counter
R: Input reset
combination
Function
Bit-wise Multifunction on Ports
Input
M: Pull-up
-Input
-Bit-wise interrupt request
-Software test variable
conditional jump
-PA[3],PA[0] input for the
event counter
-Port A reset inputs
PA[3]
10 bit
event
counter
clock
-
PA[2]
-
-
PA[1]
-
TestVar2
PA[0]
10 bit
event
counter
clock
TestVar1
PB
[3:0]
Individual
input or
output
R: CMOS or
Nch. open drain output
R: Pull-down on input
R: Pull-up on input
M: Pull-up
M: Pull-down
-Input or output
-PB[3] for the PWM
output
-PB[2:0] for the
Ck[11,16,12]
output
-Tristate output
-Input or output
-Tristate output
PB[3]
PWM
output
PB[2]
Ck[11]
output
PB[1]
Ck[16]
output
PB[0]
Ck[12]
output
PC
[3:0]
Port-wise
input /
output
R: CMOS or
Nch. open drain output
R: Pull-down on input
R: Pull-up on input
M: Pull-up
M: Pull-down
PC[3]
only in
28 pin
package
PC[2]
only in
28 pin
package
PC[1]
PC[0]
Mask options ( M: )are valid for ROM version only
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