C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 102
C8051F581-IMR
Manufacturer Part Number
C8051F581-IMR
Description
8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
Manufacturer
Silicon Labs
Datasheet
1.C8051F585-IQR.pdf
(356 pages)
Specifications of C8051F581-IMR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
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C8051F58x/F59x
12. Memory Organization
The memory organization of the CIP-51 System Controller is similar to that of a standard 8051. There are
two separate memory spaces: program memory and data memory. Program and data memory share the
same address space but are accessed via different instruction types. The memory organization is shown in
Figure 12.1
12.1. Program Memory
The C8051F580/1/2/3/8/9 devices have a 128 kB program memory space and the C8051F584/5/6/7-
F590/1 devices have 96 kB program memory space. The MCU implements this program memory space as
in-system re-programmable Flash memory in either four or three 32 kB code banks. A common code bank
(Bank 0) of 32 kB is always accessible from addresses 0x0000 to 0x7FFF. The three or two upper code
banks (Bank 1, Bank 2, and Bank 3) are each mapped to addresses 0x8000 to 0xFFFF, depending on the
selection of bits in the PSBANK register, as described in SFR Definition 12.1.
102
0x1FFFF
0x17FFF
0x1FBFF
0x00000
0x1FC00
0x00000
PROGRAM/DATA MEMORY
C8051F584/5/6/7-F590/1
Programmable in 512
Programmable in 512
C8051F580/1/2/3/8/9
128 kB FLASH
(FLASH)
96 kB FLASH
Byte Sectors)
Byte Sectors)
RESERVED
(In-System
(In-System
Figure 12.1. C8051F58x/F59x Memory Map
0xFF
0x7F
0x2F
0x1F
0x80
0x30
0x20
0x00
Rev. 1.2
(Indirect Addressing
(Direct and Indirect
INTERNAL DATA ADDRESS SPACE
EXTERNAL DATA ADDRESS SPACE
General Purpose
Upper 128 RAM
Bit Addressable
Addressing)
0xFFFF
0x1FFF
Registers
0x2000
0x0000
Only)
DATA MEMORY (RAM)
from 0x0000 to 0x1FFF,
wrapped on 8192-byte
Same 8192 bytes as
(accessable using
MOVX instruction)
8K Bytes
boundaries
XRAM
(Direct Addressing Only)
Special Function
Lower 128 RAM
(Direct and Indirect
Addressing)
Register's
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