参数资料
型号: AT91SAM9N12-CU
厂商: Atmel
文件页数: 16/27页
文件大小: 0K
描述: IC MCU ARM9 217-LFBGA
标准包装: 126
系列: SAM9N
核心处理器: ARM9
芯体尺寸: 16/32-位
速度: 400MHz
连通性: EBI/EMI,I²C,MMC,SPI,SSC,UART/USART,USB
外围设备: DMA,LCD,POR,PWM,WDT
输入/输出数: 105
程序存储器容量: 128KB(128K x 8)
程序存储器类型: ROM
RAM 容量: 32K x 8
电压 - 电源 (Vcc/Vdd): 0.9 V ~ 1.1 V
数据转换器: A/D 12x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: *
包装: *
23
11096AS–ATARM–4-Oct-11
SAM9N12
7.3
Chip Identification
Chip ID: 0x819A_05A1
SAM9N12 Chip ID Extension: 6
JTAG ID: 0x05B3_003F
ARM926 TAP ID: 0x0792_603F
7.4
Backup Section
The SAM9N12 features a Backup Section that embeds:
RC Oscillator
Slow Clock Oscillator
Real Time Counter (RTC)
Shutdown Controller
4 backup registers
Slow Clock Control Register (SCKCR)
A part of the reset Controller (RSTC)
This section is powered by the VDDBU rail.
7.5
Security Features
The SAM9N12 features:
320 OTP bits array
Secure bootloader selectable by a dedicated fuse bit
Bits in SFR register to forbid ROM and OTP read access
The OTP array enables the user to set security features and program device configuration
The secure bootloader allows:
Keeping the firmware stored in Non-Volatile memory encrypted
Decryption, in internal SRAM only, the firmware using the customer’s crypto key burned in
the fuse bits
The encryption/decryption uses high strength hardware, AES256
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