H8S2628_10 Datasheet, PDF (543/658 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 19 ROM
entered by re-setting the P1 or E1 bit. However, PV1 and EV1 bit setting is enabled, and a
transition can be made to verify mode. Error protection can be cleared only by a power-on reset.
19.10 Programmer Mode
In programmer mode, a PROM programmer can be used to perform programming/erasing via a
socket adapter, just as for a discrete flash memory. Use a PROM programmer that supports the
Renesas 128-kbyte flash memory on-chip MCU device type (FZTAT128V5A).
19.11 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 19.6 shows the correspondence between the operating modes of the H8S/2628 Group and
the flash memory. When the flash memory returns to its normal operating state from standby
mode, a period to settle the power supply circuits that were stopped 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 20 µs, even when the external clock is being used.
Table 19.6 Flash Memory Operating States
LSI Operating State
Active mode
Standby mode
Flash Memory Operating State
Normal operating mode
Standby mode
Rev. 4.00 Mar. 16, 2010 Page 495 of 606
REJ09B0155-0400