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參數(shù)資料
| 型號： | AT91SAM7S256C-MU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 17/165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 |
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113
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
When the bit is set, the bit FRDY in the Flash Programming Status Register (MC_FSR) rises. If an interrupt has
been enabled by setting the bit FRDY in MC_FMR, the interrupt line of the Memory Controller is activated.
Two errors can be detected in the MC_FSR register after a programming sequence:
Programming Error: A bad keyword and/or an invalid command have been written in the MC_FCR register
If the general-purpose bit number is greater than the total number of general-purpose bits, then the command
has no effect.
It is possible to deactivate a general-purpose NVM bit set previously. The clear sequence is:
Start the Clear General-purpose Bit command (CGPB) by writing the Flash Command Register with CGPB and
the number of the general-purpose bit to be cleared in the PAGEN field.
When the clear completes, the bit FRDY in the Flash Programming Status Register (MC_FSR) rises. If an
interrupt has been enabled by setting the bit FRDY in MC_FMR, the interrupt line of the Memory Controller is
activated.
Two errors can be detected in the MC_FSR register after a programming sequence:
Programming Error: a bad keyword and/or an invalid command have been written in the MC_FCR register
If the number of the general-purpose bit set in the PAGEN field is greater than the total number of general-
purpose bits, then the command has no effect.
The Clear General-purpose Bit command programs the general-purpose NVM bit to 0; the corresponding bit
GPNVM0 to GPNVMx in MC_FSR reads 0. The Set General-purpose Bit command programs the general-purpose
NVM bit to 1; the corresponding bit GPNVMx in MC_FSR reads 1.
Note:
Access to the Flash in read mode is permitted when a Set, Clear or Get General-purpose NVM Bit command is
performed.
19.2.4.5
Security Bit
The goal of the security bit is to prevent external access to the internal bus system. (Does not apply to EFC1 on
theSAM7S512.) JTAG, Fast Flash Programming and Flash Serial Test Interface features are disabled. Once set,
this bit can be reset only by an external hardware ERASE request to the chip. Refer to the product definition sec-
tion for the pin name that controls the ERASE. In this case, the full memory plane is erased and all lock and
general-purpose NVM bits are cleared. The security bit in the MC_FSR is cleared only after these operations. The
activation sequence is:
Start the Set Security Bit command (SSB) by writing the Flash Command Register.
When the locking completes, the bit FRDY in the Flash Programming Status Register (MC_FSR) rises. If an
interrupt has been enabled by setting the bit FRDY in MC_FMR, the interrupt line of the Memory Controller is
activated.
When the security bit is active, the SECURITY bit in the MC_FSR is set.
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相關(guān)代理商/技術(shù)參數(shù) |
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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