h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 915
h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
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21B.14 Flash Memory and Power-Down States
In addition to its normal operating state, the flash memory has power-down states in which power
consumption is reduced by halting part or all of the internal power supply circuitry.
There are three flash memory operating states:
(1) Normal operating mode: The flash memory can be read and written to.
(2) Power-down mode: Part of the power supply circuitry is halted, and the flash memory can be
(3) Standby mode: All flash memory circuits are halted, and the flash memory cannot be read or
States (2) and (3) are flash memory power-down states. Table 21B-26 shows the correspondence
between the operating states of the LSI and the flash memory.
Table 21B-26
Note: * Subclock functions (subactive mode, subsleep mode, and watch mode) are not available in
LSI Operating State
High-speed mode
Medium-speed mode
Sleep mode
Subactive mode *
Subsleep mode *
Watch mode *
Software standby mode
Hardware standby mode
read when the LSI is operating on the subclock.
written to.
versions other than the U-mask and W-mask versions.
Flash Memory Operating States
Section 21B ROM (H8S/2638 Group, H8S/2639 Group, H8S/2630 Group)
Flash Memory Operating State
Normal mode (read/write)
When PDWND = 0: Power-down mode (read-only)
When PDWND = 1: Normal mode (read-only)
Standby mode
Rev. 6.00 Feb 22, 2005 page 855 of 1484
REJ09B0103-0600
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