R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 866

• Manufacturer Part Number: R0K561622S000BE
• Description: KIT STARTER FOR H8SX/1622
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K561622S000BE

• Contents: Board, Cables, CD, Debugger, Power Supply
• Silicon Manufacturer: Renesas
• Features: Coding And Debugging, E10A Emulator, RS232 Serial Connection
• Kit Contents: Board
• Silicon Family Name: H8SX/1622F
• Silicon Core Number: R5F61622N50LGV
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: H8SX/1622
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Section 22 Flash Memory
22.11
It is possible to switch between the user MAT and user boot MAT. However, the following
procedure is required because the start addresses of these MATs are allocated to the same address.
Switching to the user boot MAT disables programming and erasing. Programming of the user boot
MAT should take place in boot mode or programmer mode.
1. Memory MAT switching by FMATS should always be executed from the on-chip RAM.
2. When accessing the memory MAT immediately after switching the memory MATs by
3. If an interrupt request has occurred during memory MAT switching, there is no guarantee of
4. After the memory MATs have been switched, take care because the interrupt vector table will
5. The size of the user MAT is different from that of the user boot MAT. Addresses which exceed
Rev. 2.00 Sep. 16, 2009 Page 836 of 1036
REJ09B0414-0200
FMATS from the on-chip RAM, similarly execute the NOP instruction in the on-chip RAM
for eight times (this prevents access to the flash memory during memory MAT switching).
which memory MAT is accessed. Always mask the maskable interrupts before switching
memory MATs. In addition, configure the system so that NMI interrupts do not occur during
memory MAT switching.
also have been switched. If interrupt processing is to be the same before and after memory
MAT switching, transfer the interrupt processing routines to the on-chip RAM and specify
VBR to place the interrupt vector table in the on-chip RAM.
the size of the 16-Kbyte user boot MAT should not be accessed. If an attempt is made, data is
read as an undefined value.
<User MAT>
Switching between User MAT and User Boot MAT
Figure 22.20 Switching between User MAT and User Boot MAT
Procedure for switching to the user boot MAT
1.
2.
3.
Procedure for switching to the user MAT
1.
2.
3.
Inhibit interrupts (mask).
Write H'AA to FMATS.
Before access to the user boot MAT, execute the NOP instruction for eight times.
Inhibit interrupts (mask).
Write other than H'AA to FMATS.
Before access to the user MAT, execute the NOP instruction for eight times.
<On-chip RAM>
Procedure for
switching to
user boot MAT
Procedure for
switching to
user MAT
<User boot MAT>