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参数资料
| 型号： | R5F2L3ACCNFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件页数： | 50/74页 |
| 文件大小： | 959K |
| 代理商： | R5F2L3ACCNFP |
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55
2588F–AVR–06/2013
ATtiny261/461/861
10. I/O Ports
All AVR ports have true Read-Modify-Write functionality when used as general digital I/O ports.
This means that the direction of one port pin can be changed without unintentionally changing
the direction of any other pin with the SBI and CBI instructions. The same applies when chang-
ing drive value (if configured as output) or enabling/disabling of pull-up resistors (if configured as
input). Each output buffer has symmetrical drive characteristics with both high sink and source
capability. The pin driver is strong enough to drive LED displays directly. All port pins have indi-
vidually selectable pull-up resistors with a supply-voltage invariant resistance. All I/O pins have
protection diodes to both V
CC and Ground as indicated in Figure 10-1. See “Electrical Character-
istics” on page 187 for a complete list of parameters.
Figure 10-1. I/O Pin Equivalent Schematic
All registers and bit references in this section are written in general form. A lower case “x” repre-
sents the numbering letter for the port, and a lower case “n” represents the bit number. However,
when using the register or bit defines in a program, the precise form must be used. For example,
PORTB3 for bit no. 3 in Port B, here documented generally as PORTxn. The physical I/O Regis-
ters and bit locations are listed in “Register Description” on page 69.
Three I/O memory address locations are allocated for each port, one each for the Data Register
– PORTx, Data Direction Register – DDRx, and the Port Input Pins – PINx. The Port Input Pins
I/O location is read only, while the Data Register and the Data Direction Register are read/write.
However, writing a logic one to a bit in the PINx Register, will result in a toggle in the correspond-
ing bit in the Data Register. In addition, the Pull-up Disable – PUD bit in MCUCR disables the
pull-up function for all pins in all ports when set.
Using the I/O port as General Digital I/O is described in “Ports as General Digital I/O” on page
56. Most port pins are multiplexed with alternate functions for the peripheral features on the
device. How each alternate function interferes with the port pin is described in “Alternate Port
Functions” on page 60. Refer to the individual module sections for a full description of the alter-
nate functions.
Note that enabling the alternate function of some of the port pins does not affect the use of the
other pins in the port as general digital I/O.
C
PIN
Logic
R
PU
See Figure
"General Digital I/O" for
Details
Pxn
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相关代理商/技术参数 |
参数描述 |
|---|---|
| R5F2L3ACCNFP#30 | 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 100LQFP |
| R5F2L3ACCNFP#U1 | 制造商:Renesas Electronics Corporation 功能描述: |
| R5F2L3ACCNFP#V0 | 功能描述:MCU 1KB FLASH 128K ROM 100-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/Lx/3AC 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 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:68-LCC（J 形引线） 包装:带卷 (TR) |
| R5F2L3ACMDFA#U0 | 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 -40 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 100LQFP |
| R5F2L3ACMNFA#U0 | 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 制造商:Renesas Electronics Corporation 功能描述:R8C/L3AM 128+4/10 100QFP 14X20 -20 TO +85 - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 128KB FLASH 100LQFP 制造商:Renesas Electronics Corporation 功能描述:MCU,R8C,16bit,20MHz,128KB Flash,QFP100 |
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