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參數(shù)資料
| 型號： | TMS470R1A256PZ |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 16/32-Bit RISC Flash Microcontroller |
| 中文描述： | 16/32位RISC閃存微控制器 |
| 文件頁數(shù)： | 12/46頁 |
| 文件大?。?/td> | 392K |
| 代理商： | TMS470R1A256PZ |
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memory selects
TMS470R1A256
16/32-Bit RISC Flash Microcontroller
SPNS100–NOVEMBER 2004
Memory selects allow the user to address memory arrays (i.e., Flash, RAM, and HET RAM) at user-defined
addresses. Each memory select has its own set (low and high) of memory base address registers (MFBAHRx
and MFBALRx) that together define the array's starting (base) address, block size, and protection.
The base address of each memory select is configurable to any memory address boundary that is a multiple of
the decoded block size. For more information on how to control and configure these memory select registers, see
the bus structure and memory sections of the
TMS470R1x System Module Reference Guide
(literature number
SPNU189).
For the memory selection assignments and the memory selected, see Table 3.
Table 3. Memory Selection Assignment
MEMORY
SELECT
0 (fine)
1 (fine)
2 (fine)
3 (fine)
4 (fine)
MEMORY SELECTED
(ALL INTERNAL)
FLASH
FLASH
RAM
RAM
HET RAM
MEMORY
SIZE
STATIC MEM
CTL REGISTER
MPU
MEMORY BASE ADDRESS REGISTER
NO
NO
YES
YES
MFBAHR0 and MFBALR0
MFBAHR1 and MFBALR1
MFBAHR2 and MFBALR2
MFBAHR3 and MFBALR3
MFBAHR4 and MFBALR4
256K
12K
(1)
1K
SMCR1
(1)
The starting addresses for both RAM memory-select signals cannot be offset from each other by a multiple of the user-defined block
size in the memory-base address register.
RAM
The A256 device contains 12K bytes of internal static RAM configurable by the SYS module to be addressed
within the range of 0x0000_0000 to 0xFFE0_0000. This RAM is implemented in one 12K array selected by two
memory-select signals. This configuration imposes an additional constraint on the memory map for RAM; the
starting addresses for both RAM memory selects cannot be offset from each other by the multiples of the size of
the physical RAM (i.e., 12K for the A256 device). The RAM is addressed through memory selects 2 and 3.
The RAM can be protected by the memory protection unit (MPU) portion of the SYS module, allowing the user
finer blocks of memory protection than is allowed by the memory selects. The MPU is ideal for protecting an
operating system while allowing access to the current task. For more detailed information on the MPU portion of
the SYS module and memory protection, see the memory section of the
TMS470R1x System Module Reference
Guide
(literature number SPNU189).
F05 Flash
The F05 Flash memory is a nonvolatile electrically erasable, and programmable memory implemented with a
32-bit-wide data bus interface. The F05 Flash has an external state machine for programming and erase
functions. See the Flash read and Flash program and erase sections of this document.
Flash protection keys
The
gram/erase/compaction operations from occurring until after the four protection keys have been matched by the
CPU loading the correct user keys into the FMPKEY control register. The protection keys on the A256 are
located in the last 4 words of the first 8K sector. For more detailed information on the Flash protection keys and
the FMPKEY control register, see the protection keys portions of the
TMS470R1x F05 Flash Reference Guide
(literature number SPNU213).
A256
device
provides
Flash
protection
keys.
These
four
32-bit
protection
keys
prevent
pro-
12
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| TMS470R1A256PZ-T | 功能描述:ARM微控制器 - MCU 48mhz / 256k Flash 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 |
| TMS470R1A288 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:16/32-Bit RISC Flash Microcontroller |
| TMS470R1A288PGEA | 功能描述:ARM微控制器 - MCU 48mhz / 288k Flash 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 |
| TMS470R1A288PGEQ | 功能描述:ARM微控制器 - MCU 16/32B RISC Flash Microcontroller 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 |
| TMS470R1A288PGET | 功能描述:ARM微控制器 - MCU 48mhz / 288k Flash 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 |
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