參數(shù)資料
型號: PIC16F1826-I/ML
廠商: Microchip Technology
文件頁數(shù): 11/109頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 2K 28-QFN
產品培訓模塊: XLP Deep Sleep Mode
8-bit PIC® Microcontroller Portfolio
特色產品: Extreme Low Power (XLP) Microcontrollers
標準包裝: 61
系列: PIC® XLP™ mTouch™ 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 32MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 3.5KB(2K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 12x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-VQFN 裸露焊盤
包裝: 托盤
產品目錄頁面: 655 (CN2011-ZH PDF)
168
2570N–AVR–05/11
ATmega325/3250/645/6450
The following code example shows a simple USART receive function based on polling of the
Receive Complete (RXCn) Flag. When using frames with less than eight bits the most significant
bits of the data read from the UDRn will be masked to zero. The USART has to be initialized
before the function can be used.
Note:
The function simply waits for data to be present in the receive buffer by checking the RXCn Flag,
before reading the buffer and returning the value.
20.7.2
Receiving Frames with 9 Data Bits
If 9-bit characters are used (UCSZ=7) the ninth bit must be read from the RXB8n bit in UCSRnB
before reading the low bits from the UDRn. This rule applies to the FEn, DORn and UPEn Sta-
tus Flags as well. Read status from UCSRnA, then data from UDRn. Reading the UDRn I/O
location will change the state of the receive buffer FIFO and consequently the TXB8n, FEn,
DORn and UPEn bits, which all are stored in the FIFO, will change.
Assembly Code Example(1)
USART_Receive:
; Wait for data to be received
sbis
UCSR0A, RXC0
rjmp
USART_Receive
; Get and return received data from buffer
in
r16, UDR0
ret
C Code Example
unsigned char
USART_Receive( void )
{
/* Wait for data to be received */
while
( !(UCSR0A & (1<<RXC0)) )
;
/* Get and return received data from buffer */
return
UDR0;
}
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