tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 317
tmp89fm42
Manufacturer Part Number
tmp89fm42
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM42.pdf
(408 pages)
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RA003
21. Flash Memory
controlled in the following three modes:
flash memory. This chapter describes how to access the flash memory using the MCU and serial PROM modes.
The TMP89FM42 has flash memory of 32768 bytes. A write and erase to be performed on flash memory can be
In MCU and serial PROM modes, flash memory control registers (FLSCR1 and FLSCR2) are used to control the
- MCU mode
- Serial PROM mode
- Parallel PROM mode
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 TMP89FM42.
(UART and SIO) enables the flash memory to be controlled by the small number of pins. The
TMP89FM42 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.
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 mode, the flash memory is accessed by the CPU control, and the flash memory can be executed
In serial PROM mode, the flash memory is accessed by the CPU control. Use of the serial interface
The parallel PROM mode allows the flash memory to be accessed as a stand-alone flash memory by the
Page 303
TMP89FM42
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