c8051t623-g Silicon Laboratories, c8051t623-g Datasheet - Page 43
c8051t623-g
Manufacturer Part Number
c8051t623-g
Description
Full Speed Usb Eprom Mcu Family
Manufacturer
Silicon Laboratories
Datasheet
1.C8051T623-G.pdf
(247 pages)
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C8051T622/3 and C8051T326/7
10. 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 of the
C8051T622/3 and C8051T326/7 device family is shown in Figure 10.1
10.1. Program Memory
The CIP-51 core has a 64 kB program memory space. The C8051T622/3 and C8051T326/7 implements
16384 or 8192 bytes of this program memory space as in-system byte-programmable EPROM organized
in a contiguous block from addresses 0x0000 to 0x3FFF or 0x0000 to 0x1FFF.
Note: 512 bytes (0x3E00 – 0x3FFF) of this memory are reserved for factory use and are not available for user
50
0x3DFF
program storage. C2 Register Definition 10.2 shows the program memory maps for C8051T622/3 and
C8051T326/7 devices.
0x3FFF
0x3E00
0x3FFF
0x1FFF
0x0000
0x2000
0x0000
PROGRAM/DATA MEMORY
C8051T622 and ‘T326/7
16k Bytes EPROM
8k Bytes EPROM
C8051T623
RESERVED
RESERVED
(EPROM)
Memory
Memory
Figure 10.1. Memory Map
0xFFFF
0x03FF
0x0400
0x0000
0xFF
0x7F
0x2F
0x1F
0x80
0x30
0x20
0x00
Rev. 1.1
XRAM - 1024 Bytes
0x0000 to 0x03FF, wrapped
(accessable using MOVX
Same 1024 bytes as from
on 1024-byte boundaries
(Indirect Addressing
(Direct and Indirect
INTERNAL DATA ADDRESS SPACE
EXTERNAL DATA ADDRESS SPACE
General Purpose
Upper 128 RAM
Bit Addressable
Addressing)
instruction)
Registers
Only)
DATA MEMORY (RAM)
(Direct Addressing Only)
Special Function
Lower 128 RAM
(Direct and Indirect
Addressing)
Register's
USB FIFOs
256 Bytes
0x04FF
0x0400
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