HD6437043F データシートの表示（PDF） - Renesas Electronics

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HD6437043F

32-bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series(Hardware Manual)

Renesas Electronics 

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Page Revisions (See Manual for Details)

22.1 Features

736 Description amended

• Programming/erasing time

• Number of programming

22.4.3 Programming/Erasing

Interface Parameters

(2) Programming/Erasing

Initialization

• Programming/erasing time

The flash memory programming time is tP ms (typ) in

128-byte simultaneous programming and t /128ms per

P

byte. The erasing time is t s (typ) per block.

E

• Number of programming

The number of flash memory programming can be up

to NWEC times.

758 Description added

Line 13

The general registers R8 to R15 are stored. The general

registers R0 to R7 can be used without being stored.

22.5.3 User Boot Mode

782 Description added

(1) User Boot Mode Initiation

Line 3

22.7 Flash Memory Emulation 791

in RAM

When the reset start is executed in user boot mode, the

check routine for flash-memory related registers runs.

While the check routine is running, the RAM area about

1.2 kbytes from H'FFFF6800 is used by the routine and 4

bytes from H'FFFFDFFC is used as a stack area. NMI

and all other interrupts cannot be accepted. Neither can

the AUD be used in this period. This period is

approximately 100 µs while operating at an internal

frequency of 40 MHz.

Note: Description added

Note: Setting the RAMS bit to 1 puts all the blocks in flash

memory in the programming/erasing-protected

state regardless of the values of the RAM2 to

RAM0 bits (emulation protection). Clear the RAMS

bit to 0 before actual programming or erasure.

RAM emulation can be performed when the user

boot MAT is selected. However,

programming/erasing user boot MAT can be

performed only in boot mode or program mode.

Rev.2.0, 07/03, page xiii of xxxviii

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