h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 508
h8s-2628
Manufacturer Part Number
h8s-2628
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2628.pdf
(641 pages)
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Section 19 ROM
19.2
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 19.2. In user mode, flash memory can be read but
not programmed or erased.
The boot, user program and programmer 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 19.1.
Figure 19.3 shows the operation flow for boot mode and figure 19.4 shows that for user program
mode.
Rev. 3.00 Oct 04, 2005 page 468 of 598
REJ09B0155-0300
Legend:
FLMCR1:
FLMCR2:
EBR1:
EBR2:
RAMER:
Mode Transitions
Flash memory control register 1
Flash memory control register 2
Erase block register 1
Erase block register 2
RAM emulation register
FLMCR1
FLMCR2
RAMER
EBR1
EBR2
Figure 19.1 Block Diagram of Flash Memory
Internal data bus (16 bits)
Internal address bus
Bus interface/controller
Flash memory
(128 kbytes)
Operating
mode
FWE pin
Mode pins
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