1-Wire和SPI认证微控制器MAXQ1004特性介绍
The MAXQ1004 is a low-power microcontroller that integrates a 10-bit ADC, 1-Wire® slave interface, SPI™, AES encryption, random-number generator (RNG), and temperature sensor with a 16-bit MAXQ® pipelined CPU. Performance bandwidth is sufficient to handle master or slave challenge-response authentication in portable devices.
The device incorporates 16KB of flash memory and 640B of RAM. Factory programming of a customer secret key is available upon request. The microcontroller runs within a wide 1.7V to 3.6V operating range.
For the ultimate in low-power performance, an ultra-low-power stop mode (300nA typ) is available. In this mode, only a minimum amount of circuitry is powered to support detection of the start of a 1-Wire transaction. When 1-Wire activity is detected, the microcontroller is turned on and the command is executed in an atomic fashion. This allows for stateless operation between commands, providing the highest reliability and lowest power consumption.
High-Performance, Low-Power, 16-Bit MAXQ20 RISC Core
6MHz Operation from an Internal Oscillator, Approaching 1MIPS per MHz
1.7V to 3.6V Wide Operating Voltage
Three Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement
Up to Eight General-Purpose I/O Pins
16-Level Hardware Stack
Optimized for C-Compiler (High-Speed/Density Code)
Memory
16KB Flash Memory, In-Application Programmable
640B of Data RAM
4KB of ROM
JTAG/TAP Bootloader Mode for In-System Programming
Peripheral Features
10-Bit Delta-Sigma ADC, Internal Reference
1-Wire Slave Interface
On-Chip Power-On Reset (POR)/Power-Fail Reset
Overvoltage Detection
Programmable Watchdog Timer
Built-In Temperature Sensor, ±6°C
Secure Programming Interface
Flash Programming Through Secure ROM Loader
Secret Key Destruction on Mass Erase
Permanent Loader Lockout Option
Code and Secret Scrambling
Unique 64-Bit Serial Number
Low-Power Consumption
300nA (typ) in Stop Mode
3.75mA (typ) at 6MHz, 0.8mA (typ) at 1 MHz
Low-Power Divide-by Modes (2, 4, 8, 256)
1-Wire/Interrupt Activity Detector
MAXQ1004,pdf: http://www.elecfans.com/soft/39/2010/2010050974560.html
应用/使用
电池充电器
电池组
便携式电子