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PSD853F5V90UI Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
PSD853F5V90UI
Flash In-System Programmable (ISP) Peripherals for 8-bit MCUs, 5V
STMicroelectronics
PSD853F5V90UI Datasheet PDF : 110 Pages
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PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
Figure 10. 8031 Memory Modules – Separate Space
DPLD
RS0
CSBOOT0-3
FS0-FS7
PSEN
RD
Primary
Flash
Memory
CS
OE
Secondary
Flash
Memory
CS
OE
Figure 11. 8031 Memory Modules – Combined Space
SRAM
CS
OE
AI02869C
RD
VM REG BIT 3
VM REG BIT 4
DPLD
RS0
CSBOOT0-3
FS0-FS7
Primary
Flash
Memory
CS
OE
Secondary
Flash
Memory
CS
OE
SRAM
CS
OE
PSEN
VM REG BIT 1
VM REG BIT 2
RD
VM REG BIT 0
AI02870C
Table 13. VM Register
Bit 7
PIO_EN
Bit 6
Bit 5
0 = disable not
not
PIO mode used used
1= enable not
not
PIO mode used used
Bit 4
Primary
FL_Data
0 = RD
can’t access
Flash memory
1 = RD
access Flash
memory
Bit 3
Secondary
EE_Data
Bit 2
Primary
FL_Code
Bit 1
Secondary
EE_Code
Bit 0
SRAM_Code
0 = RD can’t
access
Secondary Flash
memory
0 = PSEN
can’t access
Flash
memory
0 = PSEN can’t
access
Secondary Flash
memory
0 = PSEN
can’t access
SRAM
1 = RD access
Secondary Flash
memory
1 = PSEN
access
Flash
memory
1 = PSEN access
Secondary Flash
memory
1 = PSEN
access
SRAM
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