參數(shù)資料
型號(hào): MC68EC060RC50
廠商: Freescale Semiconductor
文件頁數(shù): 119/128頁
文件大小: 0K
描述: IC MPU 32BIT 50MHZ 206-PGA
標(biāo)準(zhǔn)包裝: 10
系列: M680x0
處理器類型: M680x0 32-位
速度: 50MHz
電壓: 3.3V
安裝類型: 通孔
封裝/外殼: 206-BEPGA
供應(yīng)商設(shè)備封裝: 206-PGA(47.25x47.25)
包裝: 托盤
Memory Management Unit
MOTOROLA
M68060 USER’S MANUAL
4-21
tion at any level. Page descriptors also contain a supervisor-only (S) bit that can limit access
to programs operating at the supervisor privilege level.
The protection mechanisms can be used individually or in any combination to protect:
Supervisor address space from accesses by user programs.
User address space from accesses by other user programs.
Supervisor and user program spaces from write accesses (implicitly supported by
designating all memory pages used for program storage as write protected).
One or more pages of memory from write accesses.
4.2.6.1 SUPERVISOR AND USER TRANSLATION TABLES. One
way
of
protecting
supervisor and user address spaces from unauthorized accesses is to use separate super-
visor and user translation tables. Separate trees protect supervisor programs and data from
accesses by user programs and user programs and data from access by supervisor pro-
grams. Supervisor programs may access user space through the MOVES instruction. With
a user-space SFC/DFC, the MOVES access will be translated according to the user-mode
translation tables. This translation table can be common to all tasks. Figure 4-16 illustrates
separate translation tables for supervisor accesses and for two user tasks that share the
common supervisor space. Each user task has a translation table with unique mappings for
the logical addresses in its user address space.
Figure 4-16. Translation Table Structure for Two Tasks
FOR TASK 'A'
URP FOR TASK 'A'
USER A LEVEL TABLE
TRANSLATION
TABLE FOR
TASK 'A'
FOR TASK 'B'
URP FOR TASK 'B'
USER A LEVEL TABLE
TRANSLATION
TABLE FOR
TASK 'B'
POINTER
COMMON SRP
SUPERVISOR A LEVEL TABLE
TRANSLATION
TABLE FOR
ALL SUPERVISOR
ACCESSES
相關(guān)PDF資料
PDF描述
IDT71V65803S133BGG8 IC SRAM 9MBIT 133MHZ 119BGA
MPC8270ZUUPEA IC MPU POWERQUICC II 480-TBGA
IDT71V65803S133BG8 IC SRAM 9MBIT 133MHZ 119BGA
MPC860PCZQ66D4 IC MPU PWRQUICC 66MHZ 357-PBGA
IDT71V65803S100BGG8 IC SRAM 9MBIT 100MHZ 119BGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68EC060RC66 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060RC75 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060ZU50 功能描述:IC MPU 68K 50MHZ 304-TBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:M680x0 標(biāo)準(zhǔn)包裝:1 系列:MPC85xx 處理器類型:32-位 MPC85xx PowerQUICC III 特點(diǎn):- 速度:1.2GHz 電壓:1.1V 安裝類型:表面貼裝 封裝/外殼:783-BBGA,F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:783-FCPBGA(29x29) 包裝:托盤
MC68EC060ZU66 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060ZU75 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324