H8SSLASH2218 datasheet(602/750 Pages) RENESAS

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Section 17 Flash Memory (F-ZTAT Version)

Rev.6.00 Jun. 03, 2008 Page 554 of 698

REJ09B0074-0600

• Programmer mode

⎯ Flash memory can be programmed/erased in programmer mode, using a PROM

programmer, as well as in on-board programming mode.

• Flash memory emulation in RAM

⎯ Flash memory programming can be emulated in real time by overlapping a part of RAM

onto flash memory.

Bus interface/controller

Flash memory*

(128 kbytes)

Operating

mode

FLMCR2

Internal data bus (upper 8 bits)

Internal data bus (lower 8 bits)

FWE pin

Mode pins

(MD2 to MD0)

PF3, PF0, P16, P14

EBR1

EBR2

RAMER

FLMCR1

Flash memory control register 1

Flash memory control register 2

Erase block register 1

Erase block register 2

RAM emulation register

Legend:

FLMCR1:

FLMCR2:

EBR1:

EBR2:

RAMER:

Note: * 128 kbytes in the HD64F2218, HD64F2218U, HD64F2212, and HD64F2212U;

64 kbytes in the HD64F2211 and HD64F2211U.

H'000000

H'000002

H'000001

H'000003

H'01FFFE

H'01FFFF

Figure 17.1 Block Diagram of Flash Memory

17.2

Mode Transitions

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.

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