参数资料
型号: ATMEGA1284-PU
厂商: Atmel
文件页数: 75/160页
文件大小: 0K
描述: IC MCU AVR 128K FLASH 40PDIP
产品培训模块: MCU Product Line Introduction
megaAVR Introduction
标准包装: 10
系列: AVR® ATmega
核心处理器: AVR
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 128KB(64K x 16)
程序存储器类型: 闪存
EEPROM 大小: 4K x 8
RAM 容量: 16K x 8
电压 - 电源 (Vcc/Vdd): 1.8 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: 40-DIP(0.600",15.24mm)
包装: 管件
配用: ATSTK600-RC05-ND - STK600 ROUTING CARD AVR
21
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
The 32 general purpose working registers, 64 I/O registers, 160 Extended I/O Registers and
th e 1 02 4/2 0 4 8 /4 09 6 b yte s of inte rn al d a ta SRAM in t h e A tme l
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P are all accessible through all these
addressing modes. The Register File is described in ”General Purpose Register File” on page
Figure 8-2.
Data Memory Map for
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P.
8.3.1
Data memory access times
This section describes the general access timing concepts for internal memory access. The
internal data SRAM access is performed in two clk
CPU cycles as described in Figure 8-3.
Figure 8-3.
On-chip data SRAM access cycles.
32 Registers
64 I/O Registers
Internal SRAM
(1024/2048/4096/16384x 8)
0x0000 - 0x001F
0x0020 - 0x005F
0x04FF/0x08FF/0x10FF/0x40FF
0x0060 - 0x00FF
Data Memory
160 Ext I/O Reg.
0x0100
clk
WR
RD
Data
Address
Address valid
T1
T2
T3
Compute Address
Read
Wr
ite
CPU
Memory Access Instruction
Next Instruction
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