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| 型号： | MPC855TVR80D4 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 10/15页 |
| 文件大小： | 0K |
| 描述： | IC MPU POWERQUICC 80MHZ 357-PBGA |
| 标准包装： | 44 |
| 系列： | MPC8xx |
| 处理器类型： | 32-位 MPC8xx PowerQUICC |
| 速度： | 80MHz |
| 电压： | 3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 357-BBGA |
| 供应商设备封装： | 357-PBGA（25x25） |
| 包装： | 托盘 |
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MPC855T Communications Controller Technical Summary
MOTOROLA
MPC855T Key Features
xed-point registers
– Embedded MPC8xx core performs branch folding and branch prediction with conditional
prefetch, but without conditional execution
– 4-Kbyte data cache and 4-Kbyte instruction cache, each with an MMU
– Instruction and data caches are two-way, set associative, physical address, 4-word line
burst, least recently used (LRU) replacement, lockable on cache line granularity
– MMUs with 32-entry, fully-associative instruction and data TLBs
– MMUs support multiple page sizes of 4 Kbytes, 16 Kbytes, 256 Kbytes, 512 Kbytes, and
8 Kbytes; 16 virtual address spaces and 8 protection groups
– Advanced on-chip-emulation debug mode
— Up to 32-bit data bus (dynamic bus sizing of 8, 16, and 32 bits provided through memory
controller)
— 32 address lines
System integration unit (SIU)
— Bus monitor
— Spurious interrupt monitor
— Software watchdog
— Periodic interrupt timer
— Low-power stop mode
— Clock synthesizer
— Decrementer
— Time base and RTC
— Reset controller
— IEEE 1149.1 test access port (JTAG)
— Memory controller (eight bank)
– Contains complete dynamic random-access memory (DRAM) controller
– Each bank may be a chip select or RAS to support a DRAM bank
– Up to 15 wait states programmable per memory bank
– Glueless interface to DRAM single in-line memory modules (SIMMs), static
random-access memory (SRAM), electrically programmable read-only memory
(EPROM), Flash EPROM, etc.
– DRAM controller programmable to support most size and speed memory interfaces
– Four CAS lines, four WE lines, one OE line
– Boot chip select available at reset (options for 8-, 16-, or 32-bit memory)
– Variable block sizes, 32 Kbytes to 256 Mbytes
– Selectable write protection
– On-chip bus arbitration logic
— General-purpose timers
– Four 16-bit timers or two 32-bit timers
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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