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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： | 10/66页 |
| 文件大小： | 599K |
| 代理商： | R5F21284KSP |
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18
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
8.
AVR memories
This chapter describes the different memories in the Atmel
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P. The AVR architecture has two main
m e m o ry spa c es, the Dat a M e m o r y an d t he Prog ra m M e m o r y sp ace . In ad dition , th e
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P features an EEPROM Memory for
data storage. All three memory spaces are linear and regular.
8.1
In-System Reprogrammable Flash Program Memory
The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P contains 16/32/64K bytes On-
chip In-System Reprogrammable Flash memory for program storage. Since all AVR instructions are 16 or 32 bits
wide, the Flash is organized as 8K x 16. For software security, the Flash Program memory space is divided into
two sections, Boot Program section and Application Program section.
The
Flas h
memory
has
an
en durance
of
at
least
10,000
write/erase
cycles.
The
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P Program Counter (PC) is 13/14/15
bits wide, thus addressing the 8/16/32K program memory locations. The operation of Boot Program section and
associated Boot Lock bits for software protection are described in detail in ”Boot Loader Support – Read-While-
Write Self-Programming” on page 241. ”Memory programming” on page 257 contains a detailed description on
Flash data serial downloading using the SPI pins or the JTAG interface.
Constant tables can be allocated within the entire program memory address space (see the LPM – Load Program
Memory instruction description).
Timing diagrams for instruction fetch and execution are presented in ”Instruction execution timing” on page 14.
Figure 8-1.
Program memory map.
8.2
SRAM data memory
Figure 8-2 on page 19 shows how the SRAM Memory is organized.
The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P is a complex microcontroller with
more peripheral units than can be supported within the 64 locations reserved in the Opcode for the IN and OUT
0x0000
0x1FFF/0x3FFF/0x7FFF
Program Memory
Application Flash Section
Boot Flash Section
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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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