參數(shù)資料
型號: S80C52EXXX-30:D
廠商: TEMIC SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 30 MHz, MICROCONTROLLER, PQCC44
文件頁數(shù): 68/109頁
文件大?。?/td> 10824K
47
ATtiny20 [DATASHEET]
8235E–AVR–03/2013
10.2.7 Program Example
The following code example shows how to set port B pin 0 high, pin 1 low, and define the port pins from 2 to 3 as input
with a pull-up assigned to port pin 2. The resulting pin values are read back again, but as previously discussed, a nop
instruction is included to be able to read back the value recently assigned to some of the pins.
Note:
10.3
Alternate Port Functions
Most port pins have alternate functions in addition to being general digital I/Os. In Figure 10-6 below is shown how the
port pin control signals from the simplified Figure 10-2 on page 43 can be overridden by alternate functions.
Assembly Code Example
...
; Define pull-ups and set outputs high
; Define directions for port pins
ldi
r16,(1<<PUEB2)
ldi
r17,(1<<PB0)
ldi
r18,(1<<DDB1)|(1<<DDB0)
out
PUEB,r16
out
PORTB,r17
out
DDRB,r18
; Insert nop for synchronization
nop
; Read port pins
in
r16,PINB
...
相關(guān)PDF資料
PDF描述
SC80C52XXX-36/883 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CDIP40
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S80C52T-12 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C52T-16 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C52T-20 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C52T-25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C52T-30 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller