R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 661

• Manufacturer Part Number: R5F61525
• Description: 32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

17.9
There are three types of protection against the flash memory programming/erasing: hardware
protection, software protection, and error protection.
17.9.1
Programming and erasure of the flash memory is forcibly disabled or suspended by hardware
protection. In this state, download of an on-chip program and initialization are possible. However,
programming or erasure of the user MAT cannot be performed even if the programming/erasing
program is initiated, and the error in programming/erasing is indicated by the FPFR parameter.
Table 17.12 Hardware Protection
Item
Reset protection
Protection
Hardware Protection
Description
•
•
registers are initialized in the reset
state (including a reset by the WDT)
and the programming/erasing
protection state is entered.
a reset using the RES pin unless the
RES pin is held low until oscillation has
settled after a power is initially
supplied. In the case of a reset during
operation, hold the RES pin low for the
RES pulse width given in the AC
characteristics. If a reset is input during
programming or erasure, data in the
flash memory is not guaranteed. In this
case, execute erasure and then
execute programming again.
The programming/erasing interface
The reset state will not be entered by
Section 17 Flash Memory (0.18-(m F-ZTAT Version)
Rev. 3.00 Mar. 14, 2006 Page 623 of 804
Download
O
Function to be Protected
Programming/
Erasing
O
REJ09B0104-0300