ATmega4HVD 带有4K系统内可编程Flash存储器

Flash (Kbytes)	4
EEPROM (Kbytes)	256
SRAM (Bytes)	512
Max I/O Pins	4
F.max (MHz)	4
Vcc (V)	2.0 - 2.4
10-bit A/D Channels	1
16-bit Timers	2
Brown Out Detector	Yes
Ext Interrupts	2
Hardware Multiplier	Yes
Interrupts	16
ISP	Yes
Self Program Memory	Yes
SPI	Yes
Watchdog	Yes
Pb-Free Packages	MLF (WQFN) 18

4-Kbyte self-programming Flash Program Memory, 512-Bytes SRAM, 256-Bytes EEPROM, 1 cell li-ion applications, Over-current, Short-circuit protection, 10-bit ADC, debugWire interface for on-chip debug. Up to 4 MIPS throughput at 4 MHz. 2.0 - 2.4 Volt Operation.

• 4KB 系统内可编程Flash存储器：ATmega4HVD
• 8KB 系统内可编程Flash存储器：ATmega8HVD

The ATmega4HVD/8HVD is a monitoring and protection circuit for 1-cell Li-ion applications with focus on high security/authentication, low cost and high utilization of the cell energy. The device contains secure authentication features as well as autonomous battery protection during
charging and discharging. The External Protection Input can be used to implement other battery protection mechanisms using external components, e.g. protection against chargers with too high charge voltage can be easily implemented with a few low cost passive components.
The feature set makes the ATmega4HVD/8HVD a key component in any system focusing on high security, battery protection, high system utilization and low cost.

ATmega4HVD 产品特性

• o High Performance, Low Power AVR(R) 8-bit Microcontroller
  o Advanced RISC Architecture
  – 124 Powerful Instructions - Most Single Clock Cycle Execution
  – 32 x 8 General Purpose Working Registers
  – Fully Static Operation
  – Up to 4 MIPS Throughput at 4 MHz
  o Nonvolatile Program and Data Memories
  – 4K/8K Bytes of In-System Self-Programmable Flash (ATmega4HVD/8HVD)
  – 256 Bytes EEPROM
  – 512 Bytes Internal SRAM
  – Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
  – Data Retention: 20 years at 85°C /100 years at 25°C(1)
  – Programming Lock for Software Security
  o Battery Management Features
  – One Cell Batteries
  – Short-circuit Protection (Discharge)
  – Over-current Protection (Charge and Discharge)
  – External Protection Input
  – High Voltage Outputs to Drive N-Channel Charge/Discharge FETs
  – Operation with 1 FET or 2 FETs supported
  Charge FET is optional
  – Battery authentication features (Available only under NDA)
  o Peripheral Features
  – Two 8/16-bit Timer/Counters with Separate Prescaler and two output compare
  units
  – 10-bit ADC with One External Input
  – Two High-voltage open-drain I/O pins
  – Programmable Watchdog Timer
  o Special Microcontroller Features
  – debugWIRE On-chip Debug System
  – In-System Programmable
  – Power-on Reset
  – On-chip Voltage Reference with built-in Temperature Sensor
  – On-chip Voltage Regulator
  – External and Internal Interrupt Sources
  – Sleep Modes:
  Idle, ADC Noise Reduction, Power-save, and Power-off
  o Package
  – 18-pad DRDFN/ MLF
  o Operating Voltage (VFET): 2.1 - 6.0V
  o Operating Voltage (VCC ):2.0 - 2.4V
  o Maximum Withstand Voltage (VFET): 12V
  o Maximum Withstand Voltage (High-voltage pins): 5V
  o Temperature Range: -20°C to 85°C
  o Speed Grade: 1 - 4 MHz

ATmega4HVD 订购型号

Speed (MHz)	Power Supply	Ordering Code	Package	Operation Range
1 - 4 MHz	2.0 - 2.4V	ATmega4HVD-4MX	18M1	-20 to +85°C

ATmega4HVD 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ATmega4HVA 数据手册DataSheet 下载. PDF （简洁版）
2. ATMEL 爱特梅尔AVR 微控制器ATmega4HVA 数据手册DataSheet 下载. PDF（完整版）
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
6. AVR指令集（版本：0856G–AVR–07/08）
7. AVR 微控制器汽车应用解决方案 . pdf
8. AVR 微控制器选型指南. pdf
9. ATMEL 爱特梅尔公司全线产品目录. pdf