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| 型号： | R5F212B8SNFA |
| 厂商： | Renesas Technology Corp. |
| 英文描述： | MCU |
| 中文描述： | 微控制器 |
| 文件页数： | 15/58页 |
| 文件大小： | 458K |
| 代理商： | R5F212B8SNFA |
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R8C/2A Group, R8C/2B Group
2. Central Processing Unit (CPU)
Rev.1.00
REJ03B0182-0100
Feb 09, 2007
Page 15 of 55
2.1
Data Registers (R0, R1, R2, and R3)
R0 is a 16-bit register for transfer, arithmetic, and logic operations. The same applies to R1 to R3. R0 can be split
into high-order bits (R0H) and low-order bits (R0L) to be used separately as 8-bit data registers. R1H and R1L are
analogous to R0H and R0L. R2 can be combined with R0 and used as a 32-bit data register (R2R0). R3R1 is
analogous to R2R0.
2.2
Address Registers (A0 and A1)
A0 is a 16-bit register for address register indirect addressing and address register relative addressing. It is also
used for transfer, arithmetic, and logic operations. A1 is analogous to A0. A1 can be combined with A0 and as a 32-
bit address register (A1A0).
2.3
Frame Base Register (FB)
FB is a 16-bit register for FB relative addressing.
2.4
Interrupt Table Register (INTB)
INTB is a 20-bit register that indicates the start address of an interrupt vector table.
2.5
Program Counter (PC)
PC is 20 bits wide and indicates the address of the next instruction to be executed.
2.6
User Stack Pointer (USP) and Interrupt Stack Pointer (ISP)
The stack pointers (SP), USP, and ISP, are each 16 bits wide. The U flag of FLG is used to switch between
USP and ISP.
2.7
Static Base Register (SB)
SB is a 16-bit register for SB relative addressing.
2.8
Flag Register (FLG)
FLG is an 11-bit register indicating the CPU state.
2.8.1
Carry Flag (C)
The C flag retains carry, borrow, or shift-out bits that have been generated by the arithmetic and logic unit.
2.8.2
Debug Flag (D)
The D flag is for debugging only. Set it to 0.
2.8.3
Zero Flag (Z)
The Z flag is set to 1 when an arithmetic operation results in 0; otherwise to 0.
2.8.4
Sign Flag (S)
The S flag is set to 1 when an arithmetic operation results in a negative value; otherwise to 0.
2.8.5
Register Bank Select Flag (B)
Register bank 0 is selected when the B flag is 0. Register bank 1 is selected when this flag is set to 1.
2.8.6
Overflow Flag (O)
The O flag is set to 1 when an operation results in an overflow; otherwise to 0.
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| R5F212B8SNFA#V0 | 功能描述:IC R8C/2B MCU FLASH 64LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/2B 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) |
| R5F212B8SNFA#V2 | 制造商:Renesas Electronics Corporation 功能描述:R8C/2B, 64KB + 2KB, 64-PIN LQFP - Trays 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 64KB FLASH 64LQFP |
| R5F212B8SNFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:MCU |
| R5F212B8SNFP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 64KB Flash 3.3V/5V 64-Pin LQFP T/R 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 64KB FLASH 3.3V/5V 64LQFP - Trays 制造商:Renesas Electronics 功能描述:M16C 20MHz 制造商:Renesas Electronics Corporation 功能描述:IC R8C/2B MCU FLASH 64LQFP 制造商:Renesas 功能描述:MCU 16-Bit R8C CISC 64KB Flash 3.3V/5V 64-Pin LQFP T/R |
| R5F212B8SNFP#V0 | 功能描述:IC R8C/2B MCU FLASH 64LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/2B 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) |
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