AL360 Datasheet Version 1.3 20170622

17

4.10 MCU & MCU GPIO

This MCU is upward compatible with 8051 microcontrollers, including the enriched C51

instruction set, and the16-bit and 32-bit arithmetic and logic instructions. A 4-stage

instruction pipeline enables execution of most of the instructions in a single cycle. 16

Mbytes of linear address space are used to allow for complicated application requirements.

The MCU performance is 0.296 DMIPS/MHz based on the Dhrystone V2.1 / 200 loop test.

Regarding the MCU memory space, it is convenient to view the un-segmented, 16-Mbyte

memory space as consisting of 256 regions of 64 Kbytes, numbered from 00: to FF:

The special function registers (SFRs) reside in their associated peripherals or in the core.

The following tables show the SFR address space with the SFR mnemonics and reset

values. SFR addresses are preceded by “S:” to differentiate them from addresses in the

memory space. Unoccupied locations in the SFR space (the blank locations in SFR

memory map table) are unimplemented, i.e. no register exists. If an instruction attempts to

write to an unimplemented SFR location, the instruction executes, but nothing is actually

written. If an unimplemented SFR location is read, it returns an unspecified value.

Code Memory

8 Mbytes

Memory Space

16 Mbytes

CODE SPACE

FF:FFF8h

FF:FFFFh

80:0000h

80:0007h

DATA SPACE

7F:FFF8h

7F:FFFFh

00:0000h

00:0007h

Data Memory

8 Mbytes

S:1FFh

S:000h

S:007h

SFR Area

512 bytes

63

00

07

Register File Space

64 bytes