參數(shù)資料
型號(hào): S3C1860XX-DK
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP20
封裝: 0.300 INCH, DIP-20
文件頁數(shù): 61/95頁
文件大?。?/td> 339K
代理商: S3C1860XX-DK
S3C1840/C1850/C1860/P1860
REMOTE CONTROL TX. APPLICATION NOTE
7-7
OUTPUT PIN DESCRIPTION
Indicator LED Drive Output
To drive the indicator LED, the programmer should use P2.1 of the S3C1840/C1850/C1860 (which have higher
current drive capability than other pins) in order to retain the pre-programmed status during Halt mode. Be careful
to turn on the LED when a reset signal is generated. Because a reset signal sends all of the internal and external
output pins to low level, the programmer must set LED output P2.1 to high state using a reset subroutine.
P2.1
Figure 7-5. LED Drive Output Circuit
Strobe Output Option
To active the optional strobe output function for TV and VCR remocon applications, the programmer must use
the option selection strobe output pin (P2.6).
This pin has lower current drive capability than other pins and retain the pre-programmed status while in Halt
mode. Be careful to turn on the option strobe output pin when a reset signal is generated. Because the reset
sends all internal and external output pins to low level, the option strobe output pin should always be non-active
state (H-Z). The pin should be active only when you are checking option status to reduce current consumption.
Table 7-4. Strobe Output Option
Pin usage
Key Output
LED Drive
Option Selection
P3.0-P3.3, P2.2-P2.5
00
X
P2.1
0
00
0
P2.6
0
00
NOTE: X = not allowed
0 = good
00 = better
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