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參數(shù)資料
| 型號： | R5F64112DFB |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 50 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 67/84頁 |
| 文件大?。?/td> | 1206K |
| 代理商： | R5F64112DFB |
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83
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
15.4
Counter Unit
The main part of the 8-bit Timer/Counter is the programmable bi-directional counter unit. Figure 15-2 shows a block diagram
of the counter and its surroundings.
Figure 15-2. Counter Unit Block Diagram
Signal description (internal signals):
count
Increment or decrement TCNT0 by 1.
direction
Select between increment and decrement.
clear
Clear TCNT0 (set all bits to zero).
clkTn
Timer/Counter clock, referred to as clkT0 in the following.
top
Signalize that TCNT0 has reached maximum value.
bottom
Signalize that TCNT0 has reached minimum value (zero).
Depending of the mode of operation used, the counter is cleared, incremented, or decremented at each timer clock (clkT0).
clkT0 can be generated from an external or internal clock source, selected by the clock select bits (CS02:0). When no clock
source is selected (CS02:0 = 0) the timer is stopped. However, the TCNT0 value can be accessed by the CPU, regardless of
whether clkT0 is present or not. A CPU write overrides (has priority over) all counter clear or count operations.
The counting sequence is determined by the setting of the WGM01 and WGM00 bits located in the Timer/Counter control
register (TCCR0A) and the WGM02 bit located in the Timer/Counter control register B (TCCR0B). There are close
connections between how the counter behaves (counts) and how waveforms are generated on the output compare outputs
OC0A and OC0B. For more details about advanced counting sequences and waveform generation, see
The Timer/Counter overflow flag (TOV0) is set according to the mode of operation selected by the WGM02:0 bits. TOV0 can
be used for generating a CPU interrupt.
top
bottom
TOVn
(Int. Req.)
DATA BUS
Control Logic
TCNTn
clkTn
clear
count
direction
Edge
Detector
(from Prescaler)
Clock Select
Tn
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5F64112DFB#U0 | 功能描述:MCU 512+8KB FLASH 63K 100-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C/R32C/100/111 標(biāo)準(zhǔn)包裝:96 系列:PIC® 16F 核心處理器:PIC 芯體尺寸:8-位 速度:20MHz 連通性:I²C，SPI 外圍設(shè)備:欠壓檢測/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):11 程序存儲器容量:3.5KB（2K x 14） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:128 x 8 電壓 - 電源 (Vcc/Vdd):2.3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 包裝:管件 |
| R5F64112DLG | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64112NFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64112NLG | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64112NLG#U0 | 功能描述:MCU 512+8KB FLASH 63K 100-TFLGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C/R32C/100/111 產(chǎn)品培訓(xùn)模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標(biāo)準(zhǔn)包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設(shè)備:DMA，POR，PWM，WDT 輸入/輸出數(shù):121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 34x10b，D/A 2x8b 振蕩器型:內(nèi)部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產(chǎn)品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
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