參數(shù)資料
型號: USB97C223
廠商: SMSC Corporation
英文描述: capacitor Selection for Internal Regulator Output Pins
中文描述: 電容的選擇內(nèi)部穩(wěn)壓器輸出引腳
文件頁數(shù): 14/59頁
文件大小: 385K
代理商: USB97C223
SMSC DS – USB97C201
Page 14
Rev. 03/25/2002
PRELIMINARY
6.0 FUNCTIONAL BLOCK DESCRIPTIONS
6.1 MCU
The 64K memory map is as follows from the 8051's viewpoint:
6.1.1
The 8051 has a single flat 64K Code space. External memory requires
80ns
access times from Address to Data and
less than
80ns
output enable access times, assuming the use of the nMEMR signal as OE on the memory.
MCU MEMORY MAP: CODE SPACE
Table 2 - MCU Code Memory Map
CODE SPACE
Fixed Memory
8051 ADDRESS
0x0700-0xFFFF
ACCESS
External Program
Memory
0x0400-0x06FF
768 Bytes of Fixed 16k FLASH Page
OR
768 Bytes of Internal SRAM for program execution
(see bit 7 of the UTIL_CFG register for more
information)
Fixed Memory
External Program
Memory
OR
Internal Program
SRAM
0x0000-0x03FF
External Program
Memory
8051 MCU External Code Address
Space
0xFFFF
Internal 768 Byte
SRAM or External
Memory
0x0000
6
0x0400
0x0700
FIGURE 1 - MCU TO EXTERNAL CODE SPACE MAP
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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USB97C242-MN-03 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:SMSC 功能描述: