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HD64F2621 Datasheet(PDF) 8 Page - Renesas Technology Corp

Part # HD64F2621
Description  16-Bit Single-Chip Microcomputer
PDF  1069 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD64F2621 Datasheet(HTML) 8 Page - Renesas Technology Corp

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Rev. 5.00 Jan 10, 2006 page viii of xxiv
Item
Page
Revision (See Manual for Details)
19.13 Flash
Memory
Programming
and Erasing
Precautions
Figure 19.27
Power-On/Off
Timing (User
Program Mode)
683
Figure 19.27 amended
Period during which flash memory access is prohibited
(x: Wait time after setting SWE1 bit)*2
Period during which flash memory can be programmed
(Execution of program in flash memory prohibited, and data reads other than verify operations
prohibited)
φ
VCC
FWE
tOSC1
Min 0
µs
MD2 to MD0*1
RES
SWE1 bit
SWE1 set
SWE1 cleared
Program-
ming/
erasing
possible
Wait time:
x
Wait time:
100
µs
tMDS*3
Figure 19.28
Mode
Transition
Timing
(Example: Boot
Mode
→ User
Mode
↔ User
Program Mode)
684
Figure 19.28 amended
Period during which flash memory access is prohibited
(x: Wait time after setting SWE1 bit)
*3
Period during which flash memory can be programmed
(Execution of program in flash memory prohibited, and data reads other than verify operations prohibited)
φ
VCC
FWE
tOSC1
Min 0
µs
tMDS
tMDS
*2
tMDS
tRESW
MD2 to MD0
RES
SWE1 bit
Mode
change
*1
User
mode
Boot
mode
User program mode
SWE1 set
SWE1
cleared
Mode
change
*1
User
mode
User program
mode



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