h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 411

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

14.1.5
Programming/erasing is executed by downloading the on-chip program to the on-chip RAM and
specifying the program address/data and erase block by using the interface register/parameter.
The procedure program is made by the user in user program mode and user boot mode. An
overview of the procedure is given as follows. For details, see section 14.4.2, User Program Mode.
1. Selection of on-chip program to be downloaded
For programming/erasing execution, the FWE pin must be set to 1 to transition to user program
mode.
This LSI has programming/erasing programs which can be downloaded to the on-chip RAM.
The on-chip program to be downloaded is selected by setting the corresponding bits in the
programming/erasing interface register. The address of the programming destination is
specified by the flash transfer destination address register (FTDAR).
Programming/Erasing Interface
Figure 14.5 Overview of User Procedure Program
No
program for programming/erasing.
Programming (in 128-byte units)
(downloaded program execution)
(downloaded program execution)
by setting FKEY and SCO bits.
Select on-chip program to be
or erasing (in one-block units)
Download on-chip program
specify the destination.
End user procedure
Initialization execution
Start user procedure
Programming/erasing
downloaded and
completed?
program
Yes
Rev. 2.00, 03/04, page 379 of 534