st20-gp1 STMicroelectronics, st20-gp1 Datasheet - Page 49

• Manufacturer Part Number: st20-gp1
• Description: Gps Processor
• Manufacturer: STMicroelectronics

8
The memory system consists of SRAM and a programmable memory interface. The specific details
on the operation of the memory interface are described separately in Chapter 9.
8.1
There is an internal memory module of 4 Kbytes of SRAM. The internal SRAM is mapped into the
base of the memory space from MinInt (#80000000) extending upwards, as shown in Figure 8.1.
This memory can be used to store on-chip data, stack or code for time critical routines.
Where internal memory overlays external memory, internal memory is accessed in preference.
Memory subsystem
SRAM
External
memory
SRAM
Figure 8.1 SRAM mapping
#80001000
MinInt #80000000
ST20-GP1
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