參數(shù)資料
型號: ATTINY44A-MMHR
廠商: Atmel
文件頁數(shù): 44/135頁
文件大?。?/td> 0K
描述: MCU AVR 4KB FLASH 20MHZ 20QFN
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
tinyAVR Introduction
標(biāo)準(zhǔn)包裝: 1
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 20MHz
連通性: USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 12
程序存儲器容量: 4KB(2K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 256 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-VFQFN 裸露焊盤
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: ATTINY44A-MMHRDKR
15
8183F–AVR–06/12
ATtiny24A/44A/84A
5.
Memories
This section describes the different memories in the ATtiny24A/44A/84A. The AVR architecture
has two main memory spaces, the Data memory and the Program memory space. In addition,
the ATtiny24A/44A/84A features an EEPROM Memory for data storage. All three memory
spaces are linear and regular.
5.1
In-System Re-programmable Flash Program Memory
The ATtiny24A/44A/84A contains 2K/4K/8K byte On-chip In-System Reprogrammable Flash
memory for program storage. Since all AVR instructions are 16 or 32 bits wide, the Flash is orga-
nized as 1024/2048/4096 x 16.
The F lash memory has an endurance of at least 10,000 write/erase cycles. The
ATtiny24A/44A/84A Program Counter (PC) is 10/11/12 bits wide, thus addressing the
1024/2048/4096 Program memory locations. “Memory Programming” on page 158 contains a
detailed description on Flash data serial downloading using the SPI pins.
Constant tables can be allocated within the entire Program memory address space (see instruc-
tions LPM – Load Program Memory and SPM – Store Program Memory).
Timing diagrams for instruction fetch and execution are presented in “Instruction Execution Tim-
Figure 5-1.
Program Memory Map
5.2
SRAM Data Memory
Figure 5-2 on page 16 shows how the ATtiny24A/44A/84A SRAM Memory is organized.
The lower data memory locations address both the Register File, the I/O memory and the inter-
nal data SRAM. The first 32 locations address the Register File, the next 64 locations the
standard I/O memory, and the last 128/256/512 locations address the internal data SRAM.
The five different addressing modes for the Data memory cover: Direct, Indirect with Displace-
ment, Indirect, Indirect with Pre-decrement, and Indirect with Post-increment. In the Register
File, registers R26 to R31 feature the indirect addressing pointer registers.
The direct addressing reaches the entire data space.
The Indirect with Displacement mode reaches 63 address locations from the base address given
by the Y- or Z-register.
0x0000
0x03FF/0x07FF/0x0FFF
Program Memory
相關(guān)PDF資料
PDF描述
ATTINY44A-SSFR MCU AVR 4KB FLASH 20MHZ 8SOIC
ATTINY84A-SSUR MCU AVR 8K FLASH 20MHZ 14SOIC
PCA9556PW,118 IC I/O EXPANDER I2C 8B 16TSSOP
583649-6 CONN CONTACT SNAP-IN 22-18AWG
5-583259-2 CONT MOD FORK
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ATTINY44A-SSF 功能描述:8位微控制器 -MCU 4KB FL 256B EE 256B SRAM 20MHz Hi +125C RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT