参数资料
| 型号： | ATMEGA103-6AI |
| 厂商： | Atmel |
| 文件页数： | 82/141页 |
| 文件大小： | 0K |
| 描述： | IC MCU 128K 6MHZ A/D IT 64TQFP |
| 产品培训模块： | megaAVR Introduction |
| 标准包装： | 90 |
| 系列： | AVR® ATmega |
| 核心处理器： | AVR |
| 芯体尺寸： | 8-位 |
| 速度： | 6MHz |
| 连通性： | SPI，UART/USART |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 128KB（64K x 16） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 4K x 8 |
| RAM 容量： | 4K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 数据转换器： | A/D 8x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 64-TQFP |
| 包装： | 托盘 |
| 配用： | ATSTK501-ND - ADAPTER KIT FOR 64PIN AVR MCU |
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45
ATmega103(L)
0945I–AVR–02/07
Bit 3 – AS0: Asynchronous Timer/Counter0
When set (one), Timer/Counter0 is clocked from the TOSC1 pin. When cleared (zero),
Timer/Counter0 is clocked from the internal system clock, CK. When the value of this bit
is changed, the contents of TCNT0 might get corrupted.
Bit 2 – TCN0UB: Timer/Counter0 Update Busy
When Timer/Counter0 operates asynchronously and TCNT0 is written, this bit becomes
set (one). When TCNT0 has been updated from the temporary storage register, this bit
is cleared (zero) by hardware. A logical “0” in this bit indicates that TCNT0 is ready to be
updated with a new value.
Bit 1 – OCR0UB: Output Compare Register0 Update Busy
When Timer/Counter0 operates asynchronously and OCR0 is written, this bit becomes
set (one). When OCR0 has been updated from the temporary storage register, this bit is
cleared (zero) by hardware. A logical “0” in this bit indicates that OCR0 is ready to be
updated with a new value.
Bit 0 – TCR0UB: Timer/Counter Control Register0 Update Busy
When Timer/Counter0 operates asynchronously and TCCR0 is written, this bit becomes
set (one). When TCCR0 has been updated from the temporary storage register, this bit
is cleared (zero) by hardware. A logical “0” in this bit indicates that TCCR0 is ready to be
updated with a new value.
If a write is performed to any of the three Timer/Counter0 Registers while its update
busy flag is set (one), the updated value might get corrupted and cause an unintentional
interrupt to occur.
When reading TCNT0, OCR0 and TCCR0, there is a difference in result. When reading
TCNT0, the actual timer value is read. When reading OCR0 or TCCR0, the value in the
temporary storage register is read.
Asynchronous Operation of
Timer/Counter0
When Timer/Counter0 operates synchronously, all operations and timing are identical to
Timer/Counter2. During asynchronous operation, however, some considerations must
be taken.
WARNING: When switching between asynchronous and synchronous clocking of
Timer/Counter0, the Timer Registers TCNT0, OCR0 and TCCR0 might get
corrupted. The following is the safe procedure for switching clock source:
1.
Disable the Timer0 interrupts OCIE0 and TOIE0.
2.
Select clock source by setting ASO as appropriate.
3.
Write new values to TCNT0, OCR0 and TCCR0.
4.
If switching to asynchronous operation, wait for TCNT0UB, OCR0UB and
TCR0UB to be cleared.
5.
Clear the Timer/Counter0 Interrupt Flags.
6.
Enable interrupts if needed.
The Oscillator is optimized for use with a 32,768 Hz watch crystal. An external clock
signal applied to this pin goes through the same amplifier having a bandwidth of
256 kHz. The external clock signal should therefore be in the interval 0 Hz -
256 kHz. The frequency of the clock signal applied to the TOSC1 pin must be lower
than one fourth of the CPU main clock frequency. Observe that CPU clock
frequency can be lower than the XTAL frequency if the XTAL divider is enabled.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATMEGA103L | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash |
| ATMEGA103L-4AC | 功能描述:8位微控制器 -MCU TQFP-64 128K FLASH 3 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| ATMEGA103L-4AI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 64K/128K Bytes In-System Programmable Flash |
| ATMEGA128 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash |
| ATMEGA128(L) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ATmega128(L) Preliminary Summary [Updated 9/03. 23 Pages] |
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