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参数资料
| 型号： | R5F64114NFB |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 50 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件页数： | 66/84页 |
| 文件大小： | 1206K |
| 代理商： | R5F64114NFB |
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ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
82
15.2.1 Definitions
Many register and bit references in this section are written in general form. A lower case “n” replaces the Timer/Counter
number, in this case 0. A lower case “x” replaces the output compare Unit, in this case compare unit A or compare unit B.
However, when using the register or bit defines in a program, the precise form must be used, i.e., TCNT0 for accessing
Timer/Counter0 counter value and so on.
The definitions in Table 15-1 are also used extensively throughout the document.
15.2.2 Registers
The Timer/Counter (TCNT0) and output compare registers (OCR0A and OCR0B) are 8-bit registers. Interrupt request
(abbreviated to Int.Req. in the figure) signals are all visible in the timer interrupt flag register (TIFR0). All interrupts are
individually masked with the timer interrupt mask register (TIMSK0). TIFR0 and TIMSK0 are not shown in the figure.
The Timer/Counter can be clocked internally, via the prescaler, or by an external clock source on the T0 pin. The clock select
logic block controls which clock source and edge the Timer/Counter uses to increment (or decrement) its value. The
Timer/Counter is inactive when no clock source is selected. The output from the clock select logic is referred to as the timer
clock (clkT0).
The double buffered output compare registers (OCR0A and OCR0B) are compared with the Timer/Counter value at all
times. The result of the compare can be used by the waveform generator to generate a PWM or variable frequency output on
the output compare pins (OC0A and OC0B). See Section 16.7.3 “Using the Output Compare Unit” on page 107 for details.
The compare match event will also set the compare flag (OCF0A or OCF0B) which can be used to generate an output
compare interrupt request.
15.3
Timer/Counter Clock Sources
The Timer/Counter can be clocked by an internal or an external clock source. The clock source is selected by the clock
select logic which is controlled by the clock select (CS02:0) bits located in the Timer/Counter control register (TCCR0B). For
details on clock sources and prescaler, see Section 17. “Timer/Counter0 and Timer/Counter1 Prescalers” on page 123.
Table 15-1. Definitions
Parameter
Definition
BOTTOM
The counter reaches the BOTTOM when it becomes 0x00.
MAX
The counter reaches its MAXimum when it becomes 0xFF (decimal 255).
TOP
The counter reaches the TOP when it becomes equal to the highest value in the count sequence. The
TOP value can be assigned to be the fixed value 0xFF (MAX) or the value stored in the OCR0A register.
The assignment is dependent on the mode of operation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| R5F64115DFB | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64115DFB#U0 | 功能描述:MCU 384KB ROM 40KB RAM 100-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:M16C/R32C/100/111 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| R5F64115NFB | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64116DFB | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64116DFB#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 512KB Flash 3.3V/5V 100-Pin LQFP Tray 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 512K I-TEMP PB-FREE 100-LQFP - Trays 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT 512KB FLASH 100LFQFP |
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