ST20-GP1 datasheet(49/116 Pages) STMICROELECTRONICS

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ST20-GP1 датащи(PDF) 49 Page - STMicroelectronics

номер детали	ST20-GP1

подробное описание детали	GPS PROCESSOR

PDF	116 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

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ST20-GP1

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Memory subsystem

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

SRAM

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.

Figure 8.1 SRAM mapping

Where internal memory overlays external memory, internal memory is accessed in preference.

SRAM

External

memory

MinInt #80000000

#80001000

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