ATtiny28L 带有2K系统内可编程Flash存储器

Flash (Kbytes)	2
SRAM (Bytes)	32
Max I/O Pins	11
F.max (MHz)	4
Vcc (V)	1.8-5.5
8-bit Timer	1
Analog Comparator	Yes
Watchdog	Yes
On Chip Oscillator	Yes
Interrupts	5
Ext Interrupts	2(+8)
Packages	TQFP 32 MLF 32 PDIP 28

2K Flash Program Memory, 32 bytes register file, Keyboard interrupt, high-current LED driver, Analog Comparator. Up to 4 MIPS throughput at 4 MHz.

The fast-access register file concept contains 32 x 8-bit general-purpose working registers with a single clock cycle access time. This means that during one single clock cycle,one ALU (Arithmetic Logic Unit) operation is executed. Two operands are output from the register file, the operation is executed, and the result is stored back in the register file – in one clock cycle.Two of the 32 registers can be used as a 16-bit pointer for indirect memory access. This pointer is called the Z-pointer and can address the register file and the Flash program memory.

ATtiny28L 特性

• Utilizes the AVR(R) RISC Architecture
• AVR – High-performance and Low-power RISC Architecture
  – 90 Powerful Instructions – Most Single Clock Cycle Execution
  – 32 x 8 General-purpose Working Registers
  – Up to 4 MIPS Throughput at 4 MHz
• Nonvolatile Program Memory
  – 2K Bytes of Flash Program Memory
  – Endurance: 1,000 Write/Erase Cycles
  – Programming Lock for Flash Program Data Security
• Peripheral Features
  – Interrupt and Wake-up on Low-level Input
  – One 8-bit Timer/Counter with Separate Prescaler
  – On-chip Analog Comparator
  – Programmable Watchdog Timer with On-chip Oscillator
  – Built-in High-current LED Driver with Programmable Modulation
• Special Microcontroller Features
  – Low-power Idle and Power-down Modes
  – External and Internal Interrupt Sources
  – Power-on Reset Circuit with Programmable Start-up Time
  – Internal Calibrated RC Oscillator
• Power Consumption at 1 MHz, 2V, 25°C
  – Active: 3.0 mA
  – Idle Mode: 1.2 mA
  – Power-down Mode: <1 μA
• I/O and Packages
  – 11 Programmable I/O Lines, 8 Input Lines and a High-current LED Driver
  – 28-lead PDIP, 32-lead TQFP, and 32-pad MLF
• Operating Voltages
  – VCC: 1.8V - 5.5V for the ATtiny28V
  – VCC: 2.7V - 5.5V for the ATtiny28L
• Speed Grades
  – 0 - 1.2 MHz for the ATtiny28V
  – 0 - 4 MHz For the ATtiny28L

ATtiny28L 订购型号

Speed (MHz)	Power Supply	Ordering Code	Package	Operation Range
4	2.7 - 5.5	ATtiny28L-4AC ATtiny28L-4PC ATtiny28L-4MC	32A 28P3 32M1-A	Commercial (0°C to 70°C)
		ATtiny28L-4AI ATtiny28L-4AU 无铅环保封装 ATtiny28L-4PI ATtiny28L-4PU 无铅环保封装 ATtiny28L-4MI ATtiny28L-4MU 无铅环保封装	32A 32A 28P3 28P3 32M1-A 32M1-A	Industrial (-40°C to 85°C)
12	1.8 - 5.5	ATtiny28V-1AC ATtiny28V-1PC ATtiny28V-1MC	32A 28P3 32M1-A	Commercial (0°C to 70°C)
		ATtiny28V-1AI ATtiny28V-1AU 无铅环保封装 ATtiny28V-1PI ATtiny28V-1PU 无铅环保封装 ATtiny28V-1MI ATtiny28V-1MU 无铅环保封装	32A 32A 28P3 28P3 32M1-A 32M1-A	Industrial (-40°C to 85°C)

ATtiny28L 应用技术支持与电子电路设计开发资源下载

1. ATMEL 爱特梅尔AVR 微控制器ATtiny28L 数据手册DataSheet 下载. PDF
2. ATMEL 爱特梅尔半导体公司产品线. PDF (编号:Atmel Products)
3. Atmel 爱特梅尔AVR 微控制器简介.PDF (编号:Tech AVR 000)MLF 32
4. 面向新手的AVR开发工具,及基本知识.PDF(编号:Tech AVR 001)
5. 使用AVR 定时/计数器的PWM功能设计要点 .PDF