參數(shù)資料
型號(hào): PSD813F5V-20MT
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 128K X 8 FLASH, 27 I/O, PIA-GENERAL PURPOSE, PQFP52
封裝: PLASTIC, QFP-52
文件頁數(shù): 25/103頁
文件大?。?/td> 1180K
代理商: PSD813F5V-20MT
PSD8XXF2/3/4/5
28/103
Combined Space Modes. The
Program
and
Data spaces are combined into one memory
space that allows the primary Flash memory, sec-
ondary Flash memory, and SRAM to be accessed
by either Program Select Enable (PSEN, CNTL2)
or Read Strobe (RD, CNTL1). For example, to
configure the primary Flash memory in Combined
space, bits b2 and b4 of the VM register are set to
1 (see Figure 9).
Figure 9. 8031 Memory Modules – Combined Space
Primary
Flash
Memory
DPLD
Secondary
Flash
Memory
SRAM
RS0
CSBOOT0-3
FS0-FS7
RD
CS
RD
OE
VM REG BIT 2
PSEN
VM REG BIT 0
VM REG BIT 1
VM REG BIT 3
VM REG BIT 4
OE
AI02870C
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