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參數(shù)資料
型號： AT91SAM7S256C-MU
廠商： Atmel
文件頁數(shù)： 39/165頁
文件大?。?/td> 0K
描述： IC ARM7 MCU 32BIT 256K 64QFN
標(biāo)準(zhǔn)包裝： 260
系列： SAM7S
核心處理器： ARM7
芯體尺寸： 16/32-位
速度： 55MHz
連通性： I²C，SPI，SSC，UART/USART，USB
外圍設(shè)備： 欠壓檢測/復(fù)位，DMA，POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲器容量： 256KB（256K x 8）
程序存儲器類型： 閃存
RAM 容量： 64K x 8
電壓 - 電源 (Vcc/Vdd)： 1.65 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 64-VFQFN 裸露焊盤
包裝： 托盤
133
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
Lock bits can be read using Get Lock Bit command (GLB). The n
th lock bit is active when the bit n of the bit mask
is set..
20.2.5.5
Flash General-purpose NVM Commands
General-purpose NVM bits (GP NVM bits) can be set using the Set GPNVM command (SGPB). This command
also activates GP NVM bits. A bit mask is provided as argument to the command. When bit 0 of the bit mask is set,
then the first GP NVM bit is activated.
In the same way, the Clear GPNVM command (CGPB) is used to clear general-purpose NVM bits. All the general-
purpose NVM bits are also cleared by the EA command. The general-purpose NVM bit is deactivated when the
corresponding bit in the pattern value is set to 1.
General-purpose NVM bits can be read using the Get GPNVM Bit command (GGPB). The nth GP NVM bit is active
when bit n of the bit mask is set..
20.2.5.6
Flash Security Bit Command
A security bit can be set using the Set Security Bit command (SSE). Once the security bit is active, the Fast Flash
programming is disabled. No other command can be run. An event on the Erase pin can erase the security bit once
the contents of the Flash have been erased.
The SAM7S512 security bit is controlled by the EFC0. To use the Set Security Bit command, the EFC0 must be
selected using the Select EFC command
Once the security bit is set, it is not possible to access FFPI. The only way to erase the security bit is to erase the
Flash.
In order to erase the Flash, the user must perform the following:
Table 20-12. Get Lock Bit Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0] or DATA[7:0]
1
Write handshaking
CMDE
GLB
2
Read handshaking
DATA
Lock Bit Mask Status
0 = Lock bit is cleared
1 = Lock bit is set
Table 20-13. Set/Clear GP NVM Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0] or DATA[7:0]
1
Write handshaking
CMDE
SGPB or CGPB
2
Write handshaking
DATA
GP NVM bit pattern value
Table 20-14. Get GP NVM Bit Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0] or DATA[7:0]
1
Write handshaking
CMDE
GGPB
2
Read handshaking
DATA
GP NVM Bit Mask Status
0 = GP NVM bit is cleared
1 = GP NVM bit is set
Table 20-15. Set Security Bit Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0]
1
Write handshaking
CMDE
SSE
2
Write handshaking
DATA
0
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參數(shù)描述
AT91SAM7S256C-MU-999 功能描述:ARM微控制器 - MCU 256K Flash SRAM 64K ARM based MCU RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
AT91SAM7S256D-AU 功能描述:ARM微控制器 - MCU 256K Flash SRAM 64K ARM based MCU RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT
AT91SAM7S256D-AU-999 制造商:Atmel Corporation 功能描述:AT91SAM7S256D-AU-999 制造商:Atmel Corporation 功能描述:LQFP, GREEN, IND TEMP, T&R, MRL D - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU ARM7 256KB FLASH 64LQFP 制造商:Atmel Corporation 功能描述:LQFP Green IND TEMP T&R, MRL D 制造商:Atmel 功能描述:AT91SAM7S256D-AU-999
AT91SAM7S256D-MU 制造商:Atmel Corporation 功能描述:MCU 32-bit SAM7S ARM7TDMI RISC 256KB Flash 1.8V/3.3V 64-Pin QFN EP 制造商:Atmel Corporation 功能描述:QFN, GREEN, IND TEMP, MRL D - Bulk 制造商:Atmel Corporation 功能描述:IC MCU ARM7 256KB FLASH 64QFN 制造商:Atmel Corporation 功能描述:ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
AT91SAM7S256D-MU-999 制造商:Atmel Corporation 功能描述:QFN,GREEN,IND TEMP,T&R, MRL D 制造商:Atmel Corporation 功能描述:QFN,GREEN,IND TEMP,T&R, MRL D - Tape and Reel 制造商:Atmel 功能描述:ARM 制造商:Atmel Corporation 功能描述:IC MCU ARM7 256KB FLASH 64QFN 制造商:Atmel Corporation 功能描述:QFN GREEN IND TEMP T&R, MRL D
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