参数资料
型号: AT91SAM7S32B-MU-999
厂商: Atmel
文件页数: 47/165页
文件大小: 0K
描述: IC MCU ARM7 32KB FLASH 48-VQFN
产品培训模块: MCU Product Line Introduction
标准包装: 3,500
系列: SAM7S
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 55MHz
连通性: I²C,SPI,SSC,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 21
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 1.65 V ~ 1.95 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-VFQFN 裸露焊盘
包装: 带卷 (TR)
配用: AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
AT91SAM7S-EK-ND - KIT EVAL FOR ARM AT91SAM7S
140
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
All lock bits must be deactivated before using the Full Erase command. This can be done by using the CLB
command.
20.3.4.4
Flash Lock Commands
Lock bits can be set using WPL or EWPL commands. They can also be set by using the Set Lock command
(SLB). With this command, several lock bits can be activated at the same time. Bit 0 of Bit Mask corresponds to the
first lock bit and so on.
In the same way, the Clear Lock command (CLB) is used to clear lock bits. All the lock bits can also be cleared by
the EA command.
Lock bits can be read using Get Lock Bit command (GLB). When a bit set in the Bit Mask is returned, then the cor-
responding lock bit is active.
20.3.4.5
Flash General-purpose NVM Commands
General-purpose NVM bits (GP NVM) can be set with the Set GPNVM command (SGPB). Using this command,
several GP NVM bits can be activated at the same time. Bit 0 of Bit Mask corresponds to the first GPNVM bit and
so on.
In the same way, the Clear GPNVM command (CGPB) is used to clear GP NVM bits. All the general-purpose NVM
bits are also cleared by the EA command.
GP NVM bits can be read using Get GPNVM Bit command (GGPB). When a bit set in the Bit Mask is returned,
then the corresponding GPNVM bit is set.
Table 20-24. Full Erase Command
Read/Write
DR Data
Write
EA
Table 20-25. Set and Clear Lock Bit Command
Read/Write
DR Data
Write
SLB or CLB
Write
Bit Mask
Table 20-26. Get Lock Bit Command
Read/Write
DR Data
Write
GLB
Read
Bit Mask
Table 20-27. Set and Clear General-purpose NVM Bit Command
Read/Write
DR Data
Write
SGPB or CGPB
Write
Bit Mask
Table 20-28. Get General-purpose NVM Bit Command
Read/Write
DR Data
Write
GGPB
Read
Bit Mask
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