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参数资料
| 型号： | R5F21182DD |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDIP20 |
| 封装： | 6.30 X 19 MM, 1.78 MM PITCH, PLASTIC, SDIP-20 |
| 文件页数： | 9/43页 |
| 文件大小： | 685K |
| 代理商： | R5F21182DD |
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REJ03B0234-0030 Rev.0.30 Feb 14, 2008
Page 17 of 92
Under development
Preliminary Specification
Specifications in this preliminary version are subject to change.
R32C/157 Group
2. Central Processing Unit (CPU)
2.1.8.5
Register Bank Select Flag (B flag)
This flag selects a register bank. It indicates 0 when the register bank 0 is selected, and 1 when the reg-
ister bank 1 is selected.
2.1.8.6
Overflow Flag (O flag)
This flag becomes 1 if an operation results in an overflow; otherwise, it indicates 0.
2.1.8.7
Interrupt Enable Flag (I flag)
This flag enables a maskable interrupt. It indicates 0 when an interrupt is disabled, and 1 when an inter-
rupt is enabled. Once an interrupt is accepted, the flag is set to 0.
2.1.8.8
Stack Pointer Select Flag (U flag)
This flag indicates 0 when the interrupt stack pointer (ISP) is selected, and 1 when the user stack
pointer (USP) is selected.
It is set to 0 when a hardware interrupt is accepted or the INT instruction whose software interrupt
number is 0 to 127 is executed.
2.1.8.9
Floating-point Underflow Flag (FU flag)
This flag becomes 1 if a floating point operation results in an underflow; otherwise it indicates 0. It also
becomes 1 when the operand has invalid numbers (subnormal numbers).
2.1.8.10
Floating-point Overflow Flag (FO flag)
This flag becomes 1 if a floating point operation results in an overflow; otherwise it indicates 0. It also
becomes 1 when the operand has invalid numbers (subnormal numbers).
2.1.8.11
Processor Interrupt Priority Level (IPL)
The 3-bit processor interrupt priority level (IPL) specifies eight processor interrupt priority levels from 0
to 7. If a requested interrupt's priority level is higher than the processor interrupt priority level (IPL), this
interrupt is enabled.
If the processor interrupt priority level (IPL) is set to 111b (level 7), any interrupt is disabled.
2.1.8.12
Fixed-point Designation Bit (DP bit)
This bit designates a fixed point. It also designates which part of the multiplication result should be
taken. It is used for MULX instruction.
2.1.8.13
Floating-point Rounding Mode (RND)
The 2-bit floating point rounding mode designates a rounding mode for the operation result.
2.1.8.14
Reserved
The fields are written with 0. The read value is undefined.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| R5F21182DD#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 8KB FLASH 3.3V/5V 20PIN SDIP - Rail/Tube |
| R5F21182DD#V0 | 功能描述:IC R8C MCU FLASH 20SDIP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/1x/18 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) |
| R5F21182DDD#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 8KB FLASH 3.3V/5V 20PIN SDIP - Rail/Tube |
| R5F21182DSP | 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/1x SERIES |
| R5F21182DSP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-bit R8C CISC 8KB Flash 3.3V/5V 20-Pin LSSOP Tube 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 8KB FLASH 3.3V/5V 20PIN LSSOP - Rail/Tube 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 8KB FLASH 20SSOP |
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