HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 729

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Apply the reset signal while SWE is low to reset the flash memory during its operation: The
reset signal is applied at least 100 μs after the SWE bit has been cleard.
Comply with power-on procedure designated by the programmer maker: When executing an
on-board writing with a programmer, incorrect programming or erasing may occur unless the
power-on procedure designated by the programmer makers is applied.
CK
Vcc
FWP
MD3 to MD0*
RES
SWE bit
Notes: 1.
1
Prohibition time of accessing flash memory
(t
Reprogrammable time of flash memory
(Prohibition of program execution on flash memory and of reading data except verify)
sswe
2.
3.
Levels of mode pins (MD3 to MD0) should be fixed to pull down or pull up until power-off except mode
switchimg occasion.
See section 26.5, Flash Memory Characteristics.
See section 26.3.3, Control Signal Timing.
: Wait time after SWE set) *
Figure 19.11 Power On/Off Timing (Boot Mode)
t
OSC1
t
MDS
t
MDS
Wait time: t
*
SWE set
3
*
3
2
sswe
Programmable/
erasable
Rev.4.00 Mar. 27, 2008 Page 685 of 882
Wait time: 10 0μs
19. Flash Memory (F-ZTAT Version)
min 0μs
SWE clear
min 0μs
REJ09B0108-0400