DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 645

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

φ
V
FWE
MD2 to MD0
RES
SWE1 bit
CC
Notes:
Period during which flash memory access is prohibited
(x: Wait time after setting SWE1 bit)*
Period during which flash memory can be programmed
(Execution of program in flash memory prohibited, and data reads other than verify operations prohibited)
1.
2.
3.
4.
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
When making a transition from boot mode to another mode, a mode programming setup time t
ns is necessary with respect to RES clearance timing.
See section 22.7, Flash Memory Characteristics.
Wait time: θ .
(Example: Boot Mode → User Mode ↔ User Program Mode)
t
OSC1
SWE1 set
Mode
change
t
MDS
t
Figure 17.18 Mode Transition Timing
MDS
*
1
Boot
mode
3
*
4
SWE1
cleared
Mode
change*
t
RESW
min 0μs
t
MDS
*
1
2
User
mode
Rev.7.00 Dec. 24, 2008 Page 591 of 698
User program mode
*
4
*
4
User
mode
REJ09B0074-0700
MDS
User program
mode
(min) of 200
*
4