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| 型號(hào)： | ATTINY13V-10SSUR |
| 廠商： | Atmel |
| 文件頁(yè)數(shù)： | 26/176頁(yè) |
| 文件大小： | 0K |
| 描述： | MCU AVR 1KB FLASH 10MHZ 8SOIC |
| 產(chǎn)品培訓(xùn)模塊： | tinyAVR Introduction |
| 標(biāo)準(zhǔn)包裝： | 4,000 |
| 系列： | AVR® ATtiny |
| 核心處理器： | AVR |
| 芯體尺寸： | 8-位 |
| 速度： | 10MHz |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 6 |
| 程序存儲(chǔ)器容量： | 1KB（512 x 16） |
| 程序存儲(chǔ)器類型： | 閃存 |
| EEPROM 大小： | 64 x 8 |
| RAM 容量： | 64 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 4x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | ATTINY13V-10SSUR-ND ATTINY13V-10SSURTR |
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2010-2011 Microchip Technology Inc.
Preliminary
DS41430C-page 121
PIC16(L)F720/721
16.1
AUSART Asynchronous Mode
The AUSART transmits and receives data using the
standard non-return-to-zero (NRZ) format. NRZ is
implemented with two levels: a VOH mark state which
represents a ‘1’ data bit, and a VOL space state which
represents a ‘0’ data bit. NRZ refers to the fact that
consecutively transmitted data bits of the same value
stay at the output level of that bit without returning to a
neutral level between each bit transmission. An NRZ
transmission port idles in the mark state. Each character
transmission consists of one Start bit followed by eight
or nine data bits and is always terminated by one or
more Stop bits. The Start bit is always a space and the
Stop bits are always marks. The most common data
format is 8 bits. Each transmitted bit persists for a period
of 1/(baud rate). An on-chip dedicated 8-bit Baud Rate
Generator is used to derive standard baud rate
frequencies from the system oscillator. Refer to
Table 16-5 for examples of baud rate configurations.
The AUSART transmits and receives the LSb first. The
AUSART’s transmitter and receiver are functionally
independent, but share the same data format and baud
rate. Parity is not supported by the hardware, but can
be implemented in software and stored as the ninth
data bit.
16.1.1
AUSART ASYNCHRONOUS
TRANSMITTER
The AUSART transmitter block diagram is shown in
Figure 16-1. The heart of the transmitter is the serial
Transmit Shift Register (TSR), which is not directly
accessible by software. The TSR obtains its data from
the transmit buffer, which is the TXREG register.
16.1.1.1
Enabling the Transmitter
The AUSART transmitter is enabled for asynchronous
operations by configuring the following three control
bits:
TXEN = 1
SYNC = 0
SPEN = 1
All other AUSART control bits are assumed to be in
their default state.
Setting the TXEN bit of the TXSTA register enables the
transmitter circuitry of the AUSART. Clearing the SYNC
bit of the TXSTA register configures the AUSART for
asynchronous operation. Setting the SPEN bit of the
RCSTA register enables the AUSART and automatically
configures the TX/CK I/O pin as an output.
16.1.1.2
Transmitting Data
A transmission is initiated by writing a character to the
TXREG register. If this is the first character, or the
previous character has been completely flushed from
the TSR, the data in the TXREG is immediately
transferred to the TSR register. If the TSR still contains
all or part of a previous character, the new character
data is held in the TXREG until the Stop bit of the
previous character has been transmitted. The pending
character in the TXREG is then transferred to the TSR
in one TCY immediately following the Stop bit
transmission. The transmission of the Start bit, data bits
and Stop bit sequence commences immediately
following the transfer of the data to the TSR from the
TXREG.
16.1.1.3
Transmit Interrupt Flag
The TXIF interrupt flag bit of the PIR1 register is set
whenever the AUSART transmitter is enabled and no
character is being held for transmission in the TXREG.
In other words, the TXIF bit is only clear when the TSR
is busy with a character and a new character has been
queued for transmission in the TXREG. The TXIF flag bit
is not cleared immediately upon writing TXREG. TXIF
becomes valid in the second instruction cycle following
the write execution. Polling TXIF immediately following
the TXREG write will return invalid results. The TXIF bit
is read-only, it cannot be set or cleared by software.
The TXIF interrupt can be enabled by setting the TXIE
interrupt enable bit of the PIE1 register. However, the
TXIF flag bit will be set whenever the TXREG is empty,
regardless of the state of TXIE enable bit.
To use interrupts when transmitting data, set the TXIE
bit only when there is more data to send. Clear the
TXIE interrupt enable bit upon writing the last character
of the transmission to the TXREG.
Note 1: When the SPEN bit is set the RX/DT I/O
pin is automatically configured as an input,
regardless of the state of the correspond-
ing TRIS bit and whether or not the AUS-
ART receiver is enabled. The RX/DT pin
data can be read via a normal PORT read
but PORT latch data output is precluded.
2: The TXIF transmitter interrupt flag is set
when the TXEN enable bit is set.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATTINY13V-10SSU-SL383-EW | 制造商:Atmel Corporation 功能描述: |
| ATtiny13V-10SU | 功能描述:8位微控制器 -MCU 1kB Flash 0.064kB EEPROM 6 I/O Pins RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ATTINY13V-10SU SL383 | 制造商:Atmel Corporation 功能描述:MCU 8-bit ATtiny AVR RISC 1KB Flash 2.5V/3.3V/5V 8-Pin SOIC EIAJ T/R |
| ATTINY13V-10SUR | 功能描述:8位微控制器 -MCU AVR 1KB FLSH 64B EE 64B SRAM-10MHz 1.8V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ATTINY13V-W-11 | 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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