Datasheet

Table Of Contents
Section 19 Flash Memory (F-ZTAT Version)
Page 658 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
MCU mode
On-chip ROM space
256 kbytes
Programmer mode
H'000000 H'00000
H'03FFFF H'3FFFF
Figure 19.13 Memory Map in Programmer Mode
19.12 Power-Down States for Flash Memory
In user mode, the flash memory will operate in either of the following states:
Normal operating mode
The flash memory can be read and written to.
Standby mode
All flash memory circuits are halted.
Table 19.8 shows the correspondence between the operating modes of this LSI and the flash
memory. When the flash memory returns to normal operation from a power-down state, a power
supply circuit stabilization period is needed. When the flash memory returns to its normal
operating state, bits STS2 to STS0 in SBYCR must be set to provide a wait time of at least 100 µs,
even when the external clock is being used and an oscillation stabilization time is not necessary.
Table 19.8 Flash Memory Operating States
LSI Operating State Flash Memory Operating State
Active mode Normal operating mode
Sleep mode Normal operating mode
Standby mode Standby mode
(Before entering to the normal operation mode, wait time of at least
100 µs is required)