- 您現在的位置：買賣IC網 > PDF目錄69315 > R5F6421GJFB 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 PDF資料下載
參數資料
| 型號： | R5F6421GJFB |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件頁數： | 19/50頁 |
| 文件大?。?/td> | 777K |
| 代理商： | R5F6421GJFB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁當前第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁
99
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
188.) The Input Capture unit includes a digital filtering unit (Noise Canceler) for reducing the chance of capturing
noise spikes.
The TOP value, or maximum Timer/Counter value, can in some modes of operation be defined by either the
OCR1A Register, the ICR1 Register, or by a set of fixed values. When using OCR1A as TOP value in a PWM
mode, the OCR1A Register can not be used for generating a PWM output. However, the TOP value will in this
case be double buffered allowing the TOP value to be changed in run time. If a fixed TOP value is required, the
ICR1 Register can be used as an alternative, freeing the OCR1A to be used as PWM output.
16.2.2
Definitions
The following definitions are used extensively throughout the section:
16.2.3
Compatibility
The 16-bit Timer/Counter has been updated and improved from previous versions of the 16-bit AVR Timer/Coun-
ter. This 16-bit Timer/Counter is fully compatible with the earlier version regarding:
All 16-bit Timer/Counter related I/O Register address locations, including Timer Interrupt Registers
Bit locations inside all 16-bit Timer/Counter Registers, including Timer Interrupt Registers
Interrupt Vectors
The following control bits have changed name, but have same functionality and register location:
PWM10 is changed to WGM10
PWM11 is changed to WGM11
CTC1 is changed to WGM12
The following bits are added to the 16-bit Timer/Counter Control Registers:
FOC1A and FOC1B are added to TCCR1C
WGM13 is added to TCCR1B
The 16-bit Timer/Counter has improvements that will affect the compatibility in some special cases.
16.3
Accessing 16-bit registers
The TCNT1, OCR1A/B, and ICR1 are 16-bit registers that can be accessed by the AVR CPU via the 8-bit data bus.
The 16-bit register must be byte accessed using two read or write operations. Each 16-bit timer has a single 8-bit
register for temporary storing of the high byte of the 16-bit access. The same temporary register is shared between
all 16-bit registers within each 16-bit timer. Accessing the low byte triggers the 16-bit read or write operation. When
the low byte of a 16-bit register is written by the CPU, the high byte stored in the temporary register, and the low
byte written are both copied into the 16-bit register in the same clock cycle. When the low byte of a 16-bit register is
read by the CPU, the high byte of the 16-bit register is copied into the temporary register in the same clock cycle as
the low byte is read.
Not all 16-bit accesses uses the temporary register for the high byte. Reading the OCR1A/B 16-bit registers does
not involve using the temporary register.
To do a 16-bit write, the high byte must be written before the low byte. For a 16-bit read, the low byte must be read
before the high byte.
Table 16-1.
Definition of Timer/Counter values.
BOTTOM
The counter reaches the BOTTOM when it becomes 0x0000.
MAX
The counter reaches its MAXimum when it becomes 0xFFFF (decimal 65535).
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 one of the fixed values: 0x00FF, 0x01FF, or 0x03FF, or to the value stored in the
OCR1A or ICR1 Register. The assignment is dependent of the mode of operation.
相關PDF資料 |
PDF描述 |
|---|---|
| R5F6421HKFB | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
| R5F64212KFB | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
| R5F64210LFB | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
| R5F6421EKFB | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
| R5F64212JFB | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| R5F6421GKFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F6421GLFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F6421HJFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F6421HKFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F6421HLFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
發(fā)布緊急采購，3分鐘左右您將得到回復。