DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 609

• 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

17.2
When the mode pins and the FWE pin are set in the reset state and a reset-start is executed, this
LSI enters an operating mode as shown in figure 17.2. In user mode, flash memory can be read but
not programmed or erased. The boot and user program modes are provided as modes to write and
erase the flash memory.
The differences between boot mode and user program mode are shown in table 17.1. Boot mode
and user program mode operations are shown in figures 17.3 and 17.4, respectively.
Table 17.1 Differences between Boot Mode and User Program Mode
Note: * To be provided by the user, in accordance with the recommended algorithm.
Total erase
Block erase
Programming control
program*
Mode Transitions
Notes: Only make a transition between user mode and user program mode when the CPU is
FWE = 1
(on-chip ROM
User mode
enabled)
not accessing the flash memory.
1. RAM emulation possible
2. MD2 to MD0 = 000, PF3, PF0, P16, P14 = 1100
On-board programming mode
program mode
FWE = 0
Figure 17.2 Flash Memory State Transitions
SCI, USB Boot Mode
Yes
No
Program/program-verify Erase/erase-verify
*
User
1
MD2 to 0 = 11x,
FWE = 1
MD2 to 0 = 11x,
FWE = 0
*
RES = 0
1
MD2 to 0 = 01x,
FWE = 1
RES = 0
Reset state
User Program Mode
Yes
Yes
Program/program-verify
Emulation
boot mode
SCI, USB
Rev.7.00 Dec. 24, 2008 Page 555 of 698
RES = 0
*
2
RES = 0
Programmer
User Mode
No
No
—
mode
REJ09B0074-0700