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参数资料
| 型号： | R5F21284KSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO20 |
| 封装： | 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20 |
| 文件页数： | 4/66页 |
| 文件大小： | 599K |
| 代理商： | R5F21284KSP |
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12
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
7.4.1
SREG – AVR status register
The SREG is defined as:
Bit 7 – I: Global Interrupt Enable
The Global Interrupt Enable bit must be set for the interrupts to be enabled. The individual interrupt enable control
is then performed in separate control registers. If the Global Interrupt Enable Register is cleared, none of the inter-
rupts are enabled independent of the individual interrupt enable settings. The I-bit is cleared by hardware after an
interrupt has occurred, and is set by the RETI instruction to enable subsequent interrupts. The I-bit can also be set
and cleared by the application with the SEI and CLI instructions, as described in the instruction set reference.
Bit 6 – T: Bit Copy Storage
The Bit Copy instructions BLD (Bit LoaD) and BST (Bit STore) use the T-bit as source or destination for the oper-
ated bit. A bit from a register in the Register File can be copied into T by the BST instruction, and a bit in T can be
copied into a bit in a register in the Register File by the BLD instruction.
Bit 5 – H: Half Carry Flag
The Half Carry Flag H indicates a Half Carry in some arithmetic operations. Half Carry Is useful in BCD arithmetic.
See the “Instruction Set Description” for detailed information.
Bit 4 – S: Sign Bit, S = N
V
The S-bit is always an exclusive or between the Negative Flag N and the Two’s Complement Overflow Flag V. See
the “Instruction Set Description” for detailed information.
Bit 3 – V: Two’s Complement Overflow Flag
The Two’s Complement Overflow Flag V supports two’s complement arithmetics. See the “Instruction Set Descrip-
tion” for detailed information.
Bit 2 – N: Negative Flag
The Negative Flag N indicates a negative result in an arithmetic or logic operation. See the “Instruction Set
Description” for detailed information.
Bit 1 – Z: Zero Flag
The Zero Flag Z indicates a zero result in an arithmetic or logic operation. See the “Instruction Set Description” for
detailed information.
Bit 0 – C: Carry Flag
The Carry Flag C indicates a carry in an arithmetic or logic operation. See the “Instruction Set Description” for
detailed information.
7.5
General purpose register file
The Register File is optimized for the AVR Enhanced RISC instruction set. In order to achieve the required perfor-
mance and flexibility, the following input/output schemes are supported by the Register File:
One 8-bit output operand and one 8-bit result input
Two 8-bit output operands and one 8-bit result input
Two 8-bit output operands and one 16-bit result input
One 16-bit output operand and one 16-bit result input
Bit
7
6
5432
10
0x3F (0x5F)
I
T
H
S
V
N
Z
C
SREG
Read/Write
R/W
Initial Value
0
0000
00
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相关代理商/技术参数 |
参数描述 |
|---|---|
| R5F21284KSP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 16KB Flash 3.3V/5V 20-Pin LSSOP 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 16KB FLASH 3.3V/5V 20PIN LSSOP - Rail/Tube 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 16KB FLASH 20SSOP |
| R5F21284KSP#V0 | 功能描述:IC R8C/28 MCU FLASH 20SSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/28 标准包装:60 系列:PSOC® 3 CY8C38xx 核心处理器:8051 芯体尺寸:8-位 速度:67MHz 连通性:EBI/EMI，I²C，LIN，SPI，UART/USART 外围设备:电容感应，DMA，LCD，POR，PWM，WDT 输入/输出数:25 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:2K x 8 RAM 容量:8K x 8 电压 - 电源 (Vcc/Vdd):1.71 V ~ 5.5 V 数据转换器:A/D 2x20b，D/A 4x8b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 包装:托盘 |
| R5F21284KXXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES |
| R5F21284SDSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MCU |
| R5F21284SDSP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 16KB Flash 3.3V/5V 20-Pin LSSOP 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 16KB FLASH 3.3V/5V 20PIN LSSOP - Rail/Tube 制造商:Renesas Electronics Corporation 功能描述:8BITS FLASH MCU R8C/28 制造商:Renesas Electronics 功能描述:R8C 20MHz 制造商:Renesas Electronics Corporation 功能描述:IC R8C/28 MCU FLASH 20SSOP 制造商:Renesas Electronics Corporation 功能描述:R8C Series 16-bit 1 kB RAM 16 kB Flash 20 MHz Microcontroller - SSOP-20 制造商:Renesas 功能描述:MCU 16-Bit R8C CISC 16KB Flash 3.3V/5V 20-Pin LSSOP |
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