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MC7457RX1267LC 데이터시트(PDF) 11 Page - Freescale Semiconductor, Inc |
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MC7457RX1267LC 데이터시트(HTML) 11 Page - Freescale Semiconductor, Inc |
11 / 71 page General Parameters MPC7457 RISC Microprocessor Hardware Specifications, Rev. 8 Freescale Semiconductor 11 4 General Parameters The following list provides a summary of the general parameters of the MPC7457: Technology 0.13 μm CMOS, nine-layer metal Die size 9.1 mm × 10.8 mm Transistor count 58 million Logic design Fully-static Packages MPC7447: Surface mount 360 ceramic ball grid array (CBGA) MPC7457: Surface mount 483 ceramic ball grid array (CBGA) Core power supply 1.3 V ±50 mV DC nominal I/O power supply 1.8 V ±5% DC, or 2.5 V ±5% DC, or 1.5 V ±5% DC (L3 interface only, not implemented on MPC7447) 5 Electrical and Thermal Characteristics This section provides the AC and DC electrical specifications and thermal characteristics for the MPC7457. 5.1 DC Electrical Characteristics The tables in this section describe the MPC7457 DC electrical characteristics.Table 2 provides the absolute maximum ratings. Cache level L3L3L3 Total SRAM space supported 1 MB, 2MB, 4 MB 2 1 MB, 2 MB 1 MB, 2 MB On-chip tag logical size (cache space) 1 MB, 2 MB 1 MB, 2 MB 1 MB, 2 MB Associativity 8-way 8-way 8-way Number of 32-byte sectors/line 2, 4 2, 4 2, 4 Off-Chip data SRAM support MSUG2 DDR, LW, PB2 MSUG2 DDR, LW, PB2 MSUG2 DDR, LW, PB2 Data path width 64 64 64 Direct mapped SRAM sizes 1 MB, 2 MB, 4 MB 1 MB, 2 MB 1 MB, 2 MB Parity Byte Byte Byte Notes: 1. Not implemented on MPC7447, MPC7445, or MPC7441. 2. The MPC7457 supports up to 4 MB of SRAM, of which a maximum of 2 MB can be configured as cache memory; the remaining 2 MB may be unused or configured as private memory. Table 1. Microarchitecture Comparison (continued) Microarchitectural Specs MPC7457/MPC7447 MPC7455/MPC7445 MPC7450/MPC7451/ MPC7441 |
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