參數(shù)資料
型號(hào)： MC68EC030
廠商： Motorola, Inc.
英文描述： Second-Generation 32-Bit Enhanced Embedded Controller
中文描述： 第二代32位增強(qiáng)型嵌入式控制器
文件頁(yè)數(shù)： 12/36頁(yè)
文件大?。?/td> 392K
代理商： MC68EC030
12
MC68EC030 TECHNICAL DATA
Go to: www.freescale.com
MOTOROLA
The MC68EC030 instruction cache is a 256-byte direct-mapped cache organized as 16 lines consisting
of four long words per line. Each long word is independently accessible, yielding 64 possible entries, with
address bit A1 selecting the correct word during an access. Thus, each line has a tag field composed of
the upper 24 address bits, the FC2 (supervisor/user) value, four valid bits (one for each long-word entry),
and the four long-word entries (see Figure 6). The instruction cache is automatically filled by the
MC68EC030 whenever a cache miss occurs; using the burst transfer capability, up to four long words can
be filled in one burst operation. The caches cannot be manipulated directly by the programmer except by
the use of the CACR, which provides cache clearing and cache entry clearing facilities. The caches can
also be enabled/disabled by this register. Finally, the system hardware can disable the on-chip caches at
any time by asserting the
CDIS
signal.
F F F
C C C 3
2 1 0 1
2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
3 2
0
1
9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
COMPARATOR
TAG
1 OF 16
SELECT
VALID
TAG REPLACE
INDEX
TAG
LINE HIT
DATA FROMINSTRUCTION
CACHE DATA BUS
CACHE CONTROL LOGIC
V
V
V
V
ACCESS ADDRESS
DATA TO INSTRUCTION
CACHE HOLDING REGISTER
ENTRY HIT
A
LONG WORD
SELECT
CACHE SIZE = 64 (LONG WORDS)
LINE SIZE = 4 (LONG WORDS)
SET SIZE = 1
A A A A A A A A A A A A A A A A A A A A A A A A
Figure 6. On-Chip Instruction Cache Organization
F
Freescale Semiconductor, Inc.
n
.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68EC030CFE25C 功能描述:微處理器 - MPU 32B ON-CHIP 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(lèi)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
MC68EC030FE25B 制造商:Motorola Inc 功能描述:
MC68EC030FE25C 功能描述:微處理器 - MPU 32B ON-CHIP 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(lèi)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
MC68EC030FE25CB1 功能描述:IC MPU 32BIT ENH 25MHZ 132-CQFP RoHS:否 類(lèi)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(lèi)型:32-位 MPC85xx PowerQUICC III 特點(diǎn):- 速度:1.2GHz 電壓:1.1V 安裝類(lèi)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(pán)
MC68EC030FE40B 制造商:Motorola Inc 功能描述:
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