TMP89FS60 datasheet(317/410 Pages) TOSHIBA

317 / 410 page

Page 303

TMP89FS60

RA003

21. Flash Memory

The TMP89FS60 has flash memory of 61440 bytes. A write and erase to be performed on flash memory can be

controlled in the following three modes:

- MCU mode

In MCU mode, the flash memory is accessed by the CPU control, and the flash memory can be executed

the erasing and writing without affecting the operations of a running application. Therefore, this mode is

used for software debugging and firmware change after shipment of the TMP89FS60.

- Serial PROM mode

In serial PROM mode, the flash memory is accessed by the CPU control. Use of the serial interface

(UART and SIO) enables the flash memory to be controlled by the small number of pins. The

TMP89FS60 used in serial PROM mode supports on-board programming, which enables users to pro-

gram flash memory after the microcontroller is mounted on a user board.

- Parallel PROM mode

The parallel PROM mode allows the flash memory to be accessed as a stand-alone flash memory by the

program writer provided by a third party. High-speed access to the flash memory is available by control-

ling address and data signals directly. To receive a support service for the program writer, please ask a

Toshiba sales representative.

In MCU and serial PROM modes, flash memory control registers (FLSCR1 and FLSCR2) are used to control the

flash memory. This chapter describes how to access the flash memory using the MCU and serial PROM modes.

TMP89FS60 Datasheet(PDF) 317 Page - Toshiba Semiconductor