ST10F167 Просмотр технического описания (PDF) - STMicroelectronics

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ST10F167

16-BIT MCU WITH 128KBYTE FLASH MEMORY

STMicroelectronics 

ST10F167

IV - MEMORY ORGANIZATION

The memory space of the ST10F167 is configured

in a Von-Neumann architecture. Code memory,

data memory, registers and I/O ports are orga-

nized within the same linear address space of

16M Byte. The entire memory space can be

accessed Bytewise or Wordwise. Particular por-

tions of the on-chip memory have additionally

been made directly bit addressable.

The ST10F167 provides 128K Byte of on-chip

flash memory.

2K Byte of on-chip Internal RAM stores user

defined variables for the system stack, general

purpose register banks and even for code. A reg-

ister bank can consist of up to 16 Wordwide (R0 to

R15) and/or Bytewide (RL0, RH0, …, RL7, RH7)

so-called General Purpose Registers (GPRs).

1024 Byte (2 * 512 Byte) of the address space are

reserved for the Special Function Register areas

(SFR space and ESFR space). SFRs are Word-

wide registers which are used for controlling and

monitoring functions of the different on-chip units.

Unused SFR addresses are reserved for other/

future members of the ST10 family.

2K Byte of on-chip Extension RAM (XRAM) are

provided to store user data, user stacks or code.

The XRAM is accessed like external memory and

cannot be used for the system stack or register

banks, and is not bit-addressable. The XRAM

allows 16-bit accesses with maximum speed.

In order to meet the needs of designs where more

memory is required than is provided on chip, up to

16M Byte of external RAM and/or ROM can be

connected to the microcontroller.

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