SM5964BW44JP 参数 Datasheet PDF下载

SM5964B

8-Bit Micro-controller

64KB with ISP Flash

& 1KB RAM embedded

3. Memory Structure

The SM5964B memory structure follows general 8052 structure. It is 64KB program memory.

3.1

Program Memory

The SM5964B has 64KB 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 64K byte is $0000h to

$FFFFh. The address range for the ISP service program is $F000h to $FFFFh. 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

64K byte memory used as program memory. When N = 1 means address $FE00h to $FFFFh reserved for ISP

service program. When N=2 means memory address $FC00h to $FFFFh reserved for ISP service program…etc.

Value N can be set and programmed into SM5964B configuration by writer. As shown in Fig. 3-1.

FFFF

FE00

FC00

FA00

F800

F600

F400

F200

F000

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

64K Program

Memory space

0000

Fig. 3-1: SM5964B programmable Flash

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

ISSFD-M081

Ver A SM5964B 3/7/2014

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