SM5958W40PP 参数 Datasheet PDF下载

SM5958

8-Bit Micro-controller

32KB with ISP Flash

& 1KB RAM embedded

3. Memory Structure

The SM5958 memory structure follows general 8052 structure. It is 32KB program memory.

3.1

Program Memory

The SM5958 has 32KB on-chip flash memory which can be used as general program memory, on which include up

to 4K byte specific ISP service program memory space. The address range for the 32K byte is $0000h to $7FFFh.

The address range for the ISP service program is $7000h to $7FFFh. The ISP service program size can be

partitioned as N blocks of 512 byte (N=0 to 8). When N=0 means no ISP service program space available, total

32K byte memory used as program memory. When N = 1 means address $7E00h to $7FFFh reserved for ISP

service program. When N=2 means memory address $7C00h to $7FFFh reserved for ISP service program…etc.

Value N can be set and programmed into SM5958 configuration by writer. As shown in Fig. 3-1.

7FFF

7E00

7C00

7A00

7800

7600

7400

7200

7000

N=0

N=1

N=2

N=3

N=4

N=5

N=6

N=7

N=8

ISP service

Program space,

Up to 4K

32K Program

Memory space

0000

Fig. 3-1: SM5958 programmable Flash

Specifications subject to change without notice contact your sales representatives for the most recent information.

ISSFD-M089

Ver A SM5958 3/19/2014

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