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| SH7046 Datasheet, PDF (531/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series | |||
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Section 18 Flash Memory (F-ZTAT Version)
*4
*4
*4
*4
CK
tosc1
Vcc
FWP
tMD*S2
min 0 µs
tMDS*2
MD3 to MD0
RES
SWE bit
tMDS*2
SWE
set
tRESW
SWE
cleared
Mode
change*1
Boot
mode
Mode User
change*1 mode
Period during which flash memory access is prohibited
(tsswe: Wait time after setting SWE bit)*3
User program mode
User
mode
Period during which flash memory can be programmed
(Execution of program in flash memory prohibited, and data reads other than verify operations prohibited)
User
program
mode
Notes: 1. When entering boot mode or making a transition from boot mode to another mode, mode switching
must be carried out by means of RES input.
2. See Section 22.3.3, Control Signal Timing in Electrical Characteristics.
3. See Section 22.5, Flash Memory Characteristics in Electrical Characteristics.
4. Wait time: 100 µs.
Figure 18.13 Mode Transition Timing
(Example: Boot Mode â User Mode âUser Program Mode)
Rev. 4.00 Dec 05, 2005 page 487 of 564
REJ09B0270-0400
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