MB89537 View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB89537

MB89530 Series 8-bit Original Microcontroller

Fujitsu 

MB89530 Series

s PROGRAMMING AND ERASING FLASH MEMORY ON THE MB89F538L

1. Flash Memory

The flash memory is located between 4000H and FFFFH in the CPU memory map and incorporates a flash

memory interface circuit that allows read access and program access from the CPU to be performed in the same

way as mask ROM. Programming and erasing flash memory is also performed via the flash memory interface

circuit by executing instructions in the CPU. This enables the flash memory to be updated in place under the

control of the CPU, providing an efficient method of updating program and data.

2. Flash Memory Features

• 48 K byte×8-bit configuration : (16 K+8 K+8 K+16 K sectors)

• Automatic programming algorithm (Embedded algorithm* : Equivalent to MBM29LV200)

• Includes an erase pause and restart function

• Data polling and toggle bit for detection of program/erase completion

• Detection of program/erase completion via CPU interrupt

• Compatible with JEDEC-standard commands

• Sector Erasing (sectors can be combined in any combination)

• No. of program/erase cycles : 10,000 (Min)

* : Embedded Algorithm is a trademark of Advanced Micro Devices.

3. Procedure for Programming and Erasing Flash Memory

Programming and reading flash memory cannot be performed at the same time. Accordingly, to program or

erase flash memory, the program must first be copied from flash memory to RAM so that programming can be

performed without program access from flash memory.

4. Flash Memory Register

• Control status register (FMCS)

Address

007AH

bit7 bit6 bit5

INTE RDYINT WE

R/W R/W R/W

bit4 bit3 bit2 bit1 bit0

RDY

Re- Re-

served served

Re-

served

R

R/W R/W

R/W

Initial value

000X00-0B

20

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